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authorMoxie Marlinspike <moxie@thoughtcrime.org>2014-11-24 12:54:30 -0800
committerMoxie Marlinspike <moxie@thoughtcrime.org>2014-11-24 12:54:30 -0800
commit60800e155612bea797eed93c67046a23d26054cc (patch)
treed88368c1c26162e27e790195133ca2b526597afe /jni/ed25519
Break out into separate repo.
Diffstat (limited to 'jni/ed25519')
-rw-r--r--jni/ed25519/additions/compare.c44
-rw-r--r--jni/ed25519/additions/compare.h6
-rw-r--r--jni/ed25519/additions/crypto_hash_sha512.h6
-rw-r--r--jni/ed25519/additions/curve_sigs.c116
-rw-r--r--jni/ed25519/additions/curve_sigs.h50
-rw-r--r--jni/ed25519/additions/sign_modified.c47
-rw-r--r--jni/ed25519/additions/zeroize.c17
-rw-r--r--jni/ed25519/additions/zeroize.h12
-rw-r--r--jni/ed25519/api.h4
-rw-r--r--jni/ed25519/base.h1344
-rw-r--r--jni/ed25519/base2.h40
-rw-r--r--jni/ed25519/d.h1
-rw-r--r--jni/ed25519/d2.h1
-rw-r--r--jni/ed25519/fe.h56
-rw-r--r--jni/ed25519/fe_0.c19
-rw-r--r--jni/ed25519/fe_1.c19
-rw-r--r--jni/ed25519/fe_add.c57
-rw-r--r--jni/ed25519/fe_cmov.c63
-rw-r--r--jni/ed25519/fe_copy.c29
-rw-r--r--jni/ed25519/fe_frombytes.c73
-rw-r--r--jni/ed25519/fe_invert.c14
-rw-r--r--jni/ed25519/fe_isnegative.c16
-rw-r--r--jni/ed25519/fe_isnonzero.c19
-rw-r--r--jni/ed25519/fe_mul.c253
-rw-r--r--jni/ed25519/fe_neg.c45
-rw-r--r--jni/ed25519/fe_pow22523.c13
-rw-r--r--jni/ed25519/fe_sq.c149
-rw-r--r--jni/ed25519/fe_sq2.c160
-rw-r--r--jni/ed25519/fe_sub.c57
-rw-r--r--jni/ed25519/fe_tobytes.c119
-rw-r--r--jni/ed25519/ge.h95
-rw-r--r--jni/ed25519/ge_add.c11
-rw-r--r--jni/ed25519/ge_add.h97
-rw-r--r--jni/ed25519/ge_double_scalarmult.c96
-rw-r--r--jni/ed25519/ge_frombytes.c50
-rw-r--r--jni/ed25519/ge_madd.c11
-rw-r--r--jni/ed25519/ge_madd.h88
-rw-r--r--jni/ed25519/ge_msub.c11
-rw-r--r--jni/ed25519/ge_msub.h88
-rw-r--r--jni/ed25519/ge_p1p1_to_p2.c12
-rw-r--r--jni/ed25519/ge_p1p1_to_p3.c13
-rw-r--r--jni/ed25519/ge_p2_0.c8
-rw-r--r--jni/ed25519/ge_p2_dbl.c11
-rw-r--r--jni/ed25519/ge_p2_dbl.h73
-rw-r--r--jni/ed25519/ge_p3_0.c9
-rw-r--r--jni/ed25519/ge_p3_dbl.c12
-rw-r--r--jni/ed25519/ge_p3_to_cached.c17
-rw-r--r--jni/ed25519/ge_p3_to_p2.c12
-rw-r--r--jni/ed25519/ge_p3_tobytes.c14
-rw-r--r--jni/ed25519/ge_precomp_0.c8
-rw-r--r--jni/ed25519/ge_scalarmult_base.c105
-rw-r--r--jni/ed25519/ge_sub.c11
-rw-r--r--jni/ed25519/ge_sub.h97
-rw-r--r--jni/ed25519/ge_tobytes.c14
-rw-r--r--jni/ed25519/main/main.c106
-rw-r--r--jni/ed25519/nacl_includes/crypto_int32.h6
-rw-r--r--jni/ed25519/nacl_includes/crypto_int64.h6
-rw-r--r--jni/ed25519/nacl_includes/crypto_sign.h16
-rw-r--r--jni/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h33
-rw-r--r--jni/ed25519/nacl_includes/crypto_uint32.h6
-rw-r--r--jni/ed25519/nacl_includes/crypto_uint64.h6
-rw-r--r--jni/ed25519/nacl_includes/crypto_verify_32.h22
-rw-r--r--jni/ed25519/nacl_sha512/blocks.c238
-rw-r--r--jni/ed25519/nacl_sha512/hash.c71
-rw-r--r--jni/ed25519/open.c48
-rw-r--r--jni/ed25519/pow22523.h160
-rw-r--r--jni/ed25519/pow225521.h160
-rw-r--r--jni/ed25519/sc.h15
-rw-r--r--jni/ed25519/sc_muladd.c368
-rw-r--r--jni/ed25519/sc_reduce.c275
-rw-r--r--jni/ed25519/sign.c41
-rw-r--r--jni/ed25519/sqrtm1.h1
72 files changed, 5390 insertions, 0 deletions
diff --git a/jni/ed25519/additions/compare.c b/jni/ed25519/additions/compare.c
new file mode 100644
index 00000000..8b1e3138
--- /dev/null
+++ b/jni/ed25519/additions/compare.c
@@ -0,0 +1,44 @@
+#include <string.h>
+#include "compare.h"
+
+/* Const-time comparison from SUPERCOP, but here it's only used for
+ signature verification, so doesn't need to be const-time. But
+ copied the nacl version anyways. */
+int crypto_verify_32_ref(const unsigned char *x, const unsigned char *y)
+{
+ unsigned int differentbits = 0;
+#define F(i) differentbits |= x[i] ^ y[i];
+ F(0)
+ F(1)
+ F(2)
+ F(3)
+ F(4)
+ F(5)
+ F(6)
+ F(7)
+ F(8)
+ F(9)
+ F(10)
+ F(11)
+ F(12)
+ F(13)
+ F(14)
+ F(15)
+ F(16)
+ F(17)
+ F(18)
+ F(19)
+ F(20)
+ F(21)
+ F(22)
+ F(23)
+ F(24)
+ F(25)
+ F(26)
+ F(27)
+ F(28)
+ F(29)
+ F(30)
+ F(31)
+ return (1 & ((differentbits - 1) >> 8)) - 1;
+}
diff --git a/jni/ed25519/additions/compare.h b/jni/ed25519/additions/compare.h
new file mode 100644
index 00000000..5a2fa910
--- /dev/null
+++ b/jni/ed25519/additions/compare.h
@@ -0,0 +1,6 @@
+#ifndef __COMPARE_H__
+#define __COMPARE_H__
+
+int crypto_verify_32_ref(const unsigned char *b1, const unsigned char *b2);
+
+#endif
diff --git a/jni/ed25519/additions/crypto_hash_sha512.h b/jni/ed25519/additions/crypto_hash_sha512.h
new file mode 100644
index 00000000..a51a190d
--- /dev/null
+++ b/jni/ed25519/additions/crypto_hash_sha512.h
@@ -0,0 +1,6 @@
+#ifndef crypto_hash_sha512_H
+#define crypto_hash_sha512_H
+
+extern int crypto_hash_sha512(unsigned char *,const unsigned char *,unsigned long long);
+
+#endif
diff --git a/jni/ed25519/additions/curve_sigs.c b/jni/ed25519/additions/curve_sigs.c
new file mode 100644
index 00000000..51f2052d
--- /dev/null
+++ b/jni/ed25519/additions/curve_sigs.c
@@ -0,0 +1,116 @@
+#include <string.h>
+#include "ge.h"
+#include "curve_sigs.h"
+#include "crypto_sign.h"
+
+void curve25519_keygen(unsigned char* curve25519_pubkey_out,
+ const unsigned char* curve25519_privkey_in)
+{
+ ge_p3 ed; /* Ed25519 pubkey point */
+ fe ed_y, ed_y_plus_one, one_minus_ed_y, inv_one_minus_ed_y;
+ fe mont_x;
+
+ /* Perform a fixed-base multiplication of the Edwards base point,
+ (which is efficient due to precalculated tables), then convert
+ to the Curve25519 montgomery-format public key. In particular,
+ convert Curve25519's "montgomery" x-coordinate into an Ed25519
+ "edwards" y-coordinate:
+
+ mont_x = (ed_y + 1) / (1 - ed_y)
+
+ with projective coordinates:
+
+ mont_x = (ed_y + ed_z) / (ed_z - ed_y)
+
+ NOTE: ed_y=1 is converted to mont_x=0 since fe_invert is mod-exp
+ */
+
+ ge_scalarmult_base(&ed, curve25519_privkey_in);
+ fe_add(ed_y_plus_one, ed.Y, ed.Z);
+ fe_sub(one_minus_ed_y, ed.Z, ed.Y);
+ fe_invert(inv_one_minus_ed_y, one_minus_ed_y);
+ fe_mul(mont_x, ed_y_plus_one, inv_one_minus_ed_y);
+ fe_tobytes(curve25519_pubkey_out, mont_x);
+}
+
+int curve25519_sign(unsigned char* signature_out,
+ const unsigned char* curve25519_privkey,
+ const unsigned char* msg, const unsigned long msg_len,
+ const unsigned char* random)
+{
+ ge_p3 ed_pubkey_point; /* Ed25519 pubkey point */
+ unsigned char ed_pubkey[32]; /* Ed25519 encoded pubkey */
+ unsigned char sigbuf[MAX_MSG_LEN + 128]; /* working buffer */
+ unsigned char sign_bit = 0;
+
+ if (msg_len > MAX_MSG_LEN) {
+ memset(signature_out, 0, 64);
+ return -1;
+ }
+
+ /* Convert the Curve25519 privkey to an Ed25519 public key */
+ ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey);
+ ge_p3_tobytes(ed_pubkey, &ed_pubkey_point);
+ sign_bit = ed_pubkey[31] & 0x80;
+
+ /* Perform an Ed25519 signature with explicit private key */
+ crypto_sign_modified(sigbuf, msg, msg_len, curve25519_privkey,
+ ed_pubkey, random);
+ memmove(signature_out, sigbuf, 64);
+
+ /* Encode the sign bit into signature (in unused high bit of S) */
+ signature_out[63] &= 0x7F; /* bit should be zero already, but just in case */
+ signature_out[63] |= sign_bit;
+ return 0;
+}
+
+int curve25519_verify(const unsigned char* signature,
+ const unsigned char* curve25519_pubkey,
+ const unsigned char* msg, const unsigned long msg_len)
+{
+ fe mont_x, mont_x_minus_one, mont_x_plus_one, inv_mont_x_plus_one;
+ fe one;
+ fe ed_y;
+ unsigned char ed_pubkey[32];
+ unsigned long long some_retval;
+ unsigned char verifybuf[MAX_MSG_LEN + 64]; /* working buffer */
+ unsigned char verifybuf2[MAX_MSG_LEN + 64]; /* working buffer #2 */
+
+ if (msg_len > MAX_MSG_LEN) {
+ return -1;
+ }
+
+ /* Convert the Curve25519 public key into an Ed25519 public key. In
+ particular, convert Curve25519's "montgomery" x-coordinate into an
+ Ed25519 "edwards" y-coordinate:
+
+ ed_y = (mont_x - 1) / (mont_x + 1)
+
+ NOTE: mont_x=-1 is converted to ed_y=0 since fe_invert is mod-exp
+
+ Then move the sign bit into the pubkey from the signature.
+ */
+ fe_frombytes(mont_x, curve25519_pubkey);
+ fe_1(one);
+ fe_sub(mont_x_minus_one, mont_x, one);
+ fe_add(mont_x_plus_one, mont_x, one);
+ fe_invert(inv_mont_x_plus_one, mont_x_plus_one);
+ fe_mul(ed_y, mont_x_minus_one, inv_mont_x_plus_one);
+ fe_tobytes(ed_pubkey, ed_y);
+
+ /* Copy the sign bit, and remove it from signature */
+ ed_pubkey[31] &= 0x7F; /* bit should be zero already, but just in case */
+ ed_pubkey[31] |= (signature[63] & 0x80);
+ memmove(verifybuf, signature, 64);
+ verifybuf[63] &= 0x7F;
+
+ memmove(verifybuf+64, msg, msg_len);
+
+ /* Then perform a normal Ed25519 verification, return 0 on success */
+ /* The below call has a strange API: */
+ /* verifybuf = R || S || message */
+ /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets
+ replaced with pubkey for hashing, then the whole thing gets zeroized
+ (if bad sig), or contains a copy of msg (good sig) */
+ return crypto_sign_open(verifybuf2, &some_retval, verifybuf, 64 + msg_len, ed_pubkey);
+}
diff --git a/jni/ed25519/additions/curve_sigs.h b/jni/ed25519/additions/curve_sigs.h
new file mode 100644
index 00000000..cc462471
--- /dev/null
+++ b/jni/ed25519/additions/curve_sigs.h
@@ -0,0 +1,50 @@
+
+#ifndef __CURVE_SIGS_H__
+#define __CURVE_SIGS_H__
+
+#define MAX_MSG_LEN 256
+
+void curve25519_keygen(unsigned char* curve25519_pubkey_out, /* 32 bytes */
+ const unsigned char* curve25519_privkey_in); /* 32 bytes */
+
+/* returns 0 on success */
+int curve25519_sign(unsigned char* signature_out, /* 64 bytes */
+ const unsigned char* curve25519_privkey, /* 32 bytes */
+ const unsigned char* msg, const unsigned long msg_len,
+ const unsigned char* random); /* 64 bytes */
+
+/* returns 0 on success */
+int curve25519_verify(const unsigned char* signature, /* 64 bytes */
+ const unsigned char* curve25519_pubkey, /* 32 bytes */
+ const unsigned char* msg, const unsigned long msg_len);
+
+/* helper function - modified version of crypto_sign() to use
+ explicit private key. In particular:
+
+ sk : private key
+ pk : public key
+ msg : message
+ prefix : 0xFE || [0xFF]*31
+ random : 64 bytes random
+ q : main subgroup order
+
+ The prefix is chosen to distinguish the two SHA512 uses below, since
+ prefix is an invalid encoding for R (it would encode a "field element"
+ of 2^255 - 2). 0xFF*32 is set aside for use in ECDH protocols, which
+ is why the first byte here ix 0xFE.
+
+ sig_nonce = SHA512(prefix || sk || msg || random) % q
+ R = g^sig_nonce
+ M = SHA512(R || pk || m)
+ S = sig_nonce + (m * sk)
+ signature = (R || S)
+ */
+int crypto_sign_modified(
+ unsigned char *sm,
+ const unsigned char *m,unsigned long long mlen,
+ const unsigned char *sk, /* Curve/Ed25519 private key */
+ const unsigned char *pk, /* Ed25519 public key */
+ const unsigned char *random /* 64 bytes random to hash into nonce */
+ );
+
+#endif
diff --git a/jni/ed25519/additions/sign_modified.c b/jni/ed25519/additions/sign_modified.c
new file mode 100644
index 00000000..61332e70
--- /dev/null
+++ b/jni/ed25519/additions/sign_modified.c
@@ -0,0 +1,47 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+#include "sc.h"
+#include "zeroize.h"
+
+/* NEW: Compare to pristine crypto_sign()
+ Uses explicit private key for nonce derivation and as scalar,
+ instead of deriving both from a master key.
+*/
+int crypto_sign_modified(
+ unsigned char *sm,
+ const unsigned char *m,unsigned long long mlen,
+ const unsigned char *sk, const unsigned char* pk,
+ const unsigned char* random
+)
+{
+ unsigned char nonce[64];
+ unsigned char hram[64];
+ ge_p3 R;
+ int count=0;
+
+ memmove(sm + 64,m,mlen);
+ memmove(sm + 32,sk,32); /* NEW: Use privkey directly for nonce derivation */
+
+ /* NEW : add prefix to separate hash uses - see .h */
+ sm[0] = 0xFE;
+ for (count = 1; count < 32; count++)
+ sm[count] = 0xFF;
+
+ /* NEW: add suffix of random data */
+ memmove(sm + mlen + 64, random, 64);
+
+ crypto_hash_sha512(nonce,sm,mlen + 128);
+ memmove(sm + 32,pk,32);
+
+ sc_reduce(nonce);
+ ge_scalarmult_base(&R,nonce);
+ ge_p3_tobytes(sm,&R);
+
+ crypto_hash_sha512(hram,sm,mlen + 64);
+ sc_reduce(hram);
+ sc_muladd(sm + 32,hram,sk,nonce); /* NEW: Use privkey directly */
+
+ return 0;
+}
diff --git a/jni/ed25519/additions/zeroize.c b/jni/ed25519/additions/zeroize.c
new file mode 100644
index 00000000..37c1f708
--- /dev/null
+++ b/jni/ed25519/additions/zeroize.c
@@ -0,0 +1,17 @@
+#include "zeroize.h"
+
+void zeroize(unsigned char* b, size_t len)
+{
+ size_t count = 0;
+ unsigned long retval = 0;
+ volatile unsigned char *p = b;
+
+ for (count = 0; count < len; count++)
+ p[count] = 0;
+}
+
+void zeroize_stack()
+{
+ unsigned char m[ZEROIZE_STACK_SIZE];
+ zeroize(m, sizeof m);
+}
diff --git a/jni/ed25519/additions/zeroize.h b/jni/ed25519/additions/zeroize.h
new file mode 100644
index 00000000..80fcffb7
--- /dev/null
+++ b/jni/ed25519/additions/zeroize.h
@@ -0,0 +1,12 @@
+#ifndef __ZEROIZE_H__
+#define __ZEROIZE_H__
+
+#include <stdlib.h>
+
+#define ZEROIZE_STACK_SIZE 2048
+
+void zeroize(unsigned char* b, size_t len);
+
+void zeroize_stack();
+
+#endif
diff --git a/jni/ed25519/api.h b/jni/ed25519/api.h
new file mode 100644
index 00000000..d88dae0c
--- /dev/null
+++ b/jni/ed25519/api.h
@@ -0,0 +1,4 @@
+#define CRYPTO_SECRETKEYBYTES 64
+#define CRYPTO_PUBLICKEYBYTES 32
+#define CRYPTO_BYTES 64
+#define CRYPTO_DETERMINISTIC 1
diff --git a/jni/ed25519/base.h b/jni/ed25519/base.h
new file mode 100644
index 00000000..573bd8a0
--- /dev/null
+++ b/jni/ed25519/base.h
@@ -0,0 +1,1344 @@
+{
+ {
+ { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 },
+ { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 },
+ { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 },
+ },
+ {
+ { -12815894,-12976347,-21581243,11784320,-25355658,-2750717,-11717903,-3814571,-358445,-10211303 },
+ { -21703237,6903825,27185491,6451973,-29577724,-9554005,-15616551,11189268,-26829678,-5319081 },
+ { 26966642,11152617,32442495,15396054,14353839,-12752335,-3128826,-9541118,-15472047,-4166697 },
+ },
+ {
+ { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 },
+ { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 },
+ { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 },
+ },
+ {
+ { -17036878,13921892,10945806,-6033431,27105052,-16084379,-28926210,15006023,3284568,-6276540 },
+ { 23599295,-8306047,-11193664,-7687416,13236774,10506355,7464579,9656445,13059162,10374397 },
+ { 7798556,16710257,3033922,2874086,28997861,2835604,32406664,-3839045,-641708,-101325 },
+ },
+ {
+ { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 },
+ { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 },
+ { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 },
+ },
+ {
+ { -15371964,-12862754,32573250,4720197,-26436522,5875511,-19188627,-15224819,-9818940,-12085777 },
+ { -8549212,109983,15149363,2178705,22900618,4543417,3044240,-15689887,1762328,14866737 },
+ { -18199695,-15951423,-10473290,1707278,-17185920,3916101,-28236412,3959421,27914454,4383652 },
+ },
+ {
+ { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 },
+ { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 },
+ { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 },
+ },
+ {
+ { 14499471,-2729599,-33191113,-4254652,28494862,14271267,30290735,10876454,-33154098,2381726 },
+ { -7195431,-2655363,-14730155,462251,-27724326,3941372,-6236617,3696005,-32300832,15351955 },
+ { 27431194,8222322,16448760,-3907995,-18707002,11938355,-32961401,-2970515,29551813,10109425 },
+ },
+},
+{
+ {
+ { -13657040,-13155431,-31283750,11777098,21447386,6519384,-2378284,-1627556,10092783,-4764171 },
+ { 27939166,14210322,4677035,16277044,-22964462,-12398139,-32508754,12005538,-17810127,12803510 },
+ { 17228999,-15661624,-1233527,300140,-1224870,-11714777,30364213,-9038194,18016357,4397660 },
+ },
+ {
+ { -10958843,-7690207,4776341,-14954238,27850028,-15602212,-26619106,14544525,-17477504,982639 },
+ { 29253598,15796703,-2863982,-9908884,10057023,3163536,7332899,-4120128,-21047696,9934963 },
+ { 5793303,16271923,-24131614,-10116404,29188560,1206517,-14747930,4559895,-30123922,-10897950 },
+ },
+ {
+ { -27643952,-11493006,16282657,-11036493,28414021,-15012264,24191034,4541697,-13338309,5500568 },
+ { 12650548,-1497113,9052871,11355358,-17680037,-8400164,-17430592,12264343,10874051,13524335 },
+ { 25556948,-3045990,714651,2510400,23394682,-10415330,33119038,5080568,-22528059,5376628 },
+ },
+ {
+ { -26088264,-4011052,-17013699,-3537628,-6726793,1920897,-22321305,-9447443,4535768,1569007 },
+ { -2255422,14606630,-21692440,-8039818,28430649,8775819,-30494562,3044290,31848280,12543772 },
+ { -22028579,2943893,-31857513,6777306,13784462,-4292203,-27377195,-2062731,7718482,14474653 },
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+ { -10312768,3936952,9156313,-8897683,16498692,-994647,-27481051,-666732,3424691,7540221 },
+ },
+ {
+ { 30322361,-6964110,11361005,-4143317,7433304,4989748,-7071422,-16317219,-9244265,15258046 },
+ { 13054562,-2779497,19155474,469045,-12482797,4566042,5631406,2711395,1062915,-5136345 },
+ { -19240248,-11254599,-29509029,-7499965,-5835763,13005411,-6066489,12194497,32960380,1459310 },
+ },
+},
+{
+ {
+ { 19852034,7027924,23669353,10020366,8586503,-6657907,394197,-6101885,18638003,-11174937 },
+ { 31395534,15098109,26581030,8030562,-16527914,-5007134,9012486,-7584354,-6643087,-5442636 },
+ { -9192165,-2347377,-1997099,4529534,25766844,607986,-13222,9677543,-32294889,-6456008 },
+ },
+ {
+ { -2444496,-149937,29348902,8186665,1873760,12489863,-30934579,-7839692,-7852844,-8138429 },
+ { -15236356,-15433509,7766470,746860,26346930,-10221762,-27333451,10754588,-9431476,5203576 },
+ { 31834314,14135496,-770007,5159118,20917671,-16768096,-7467973,-7337524,31809243,7347066 },
+ },
+ {
+ { -9606723,-11874240,20414459,13033986,13716524,-11691881,19797970,-12211255,15192876,-2087490 },
+ { -12663563,-2181719,1168162,-3804809,26747877,-14138091,10609330,12694420,33473243,-13382104 },
+ { 33184999,11180355,15832085,-11385430,-1633671,225884,15089336,-11023903,-6135662,14480053 },
+ },
+ {
+ { 31308717,-5619998,31030840,-1897099,15674547,-6582883,5496208,13685227,27595050,8737275 },
+ { -20318852,-15150239,10933843,-16178022,8335352,-7546022,-31008351,-12610604,26498114,66511 },
+ { 22644454,-8761729,-16671776,4884562,-3105614,-13559366,30540766,-4286747,-13327787,-7515095 },
+ },
+ {
+ { -28017847,9834845,18617207,-2681312,-3401956,-13307506,8205540,13585437,-17127465,15115439 },
+ { 23711543,-672915,31206561,-8362711,6164647,-9709987,-33535882,-1426096,8236921,16492939 },
+ { -23910559,-13515526,-26299483,-4503841,25005590,-7687270,19574902,10071562,6708380,-6222424 },
+ },
+ {
+ { 2101391,-4930054,19702731,2367575,-15427167,1047675,5301017,9328700,29955601,-11678310 },
+ { 3096359,9271816,-21620864,-15521844,-14847996,-7592937,-25892142,-12635595,-9917575,6216608 },
+ { -32615849,338663,-25195611,2510422,-29213566,-13820213,24822830,-6146567,-26767480,7525079 },
+ },
+ {
+ { -23066649,-13985623,16133487,-7896178,-3389565,778788,-910336,-2782495,-19386633,11994101 },
+ { 21691500,-13624626,-641331,-14367021,3285881,-3483596,-25064666,9718258,-7477437,13381418 },
+ { 18445390,-4202236,14979846,11622458,-1727110,-3582980,23111648,-6375247,28535282,15779576 },
+ },
+ {
+ { 30098053,3089662,-9234387,16662135,-21306940,11308411,-14068454,12021730,9955285,-16303356 },
+ { 9734894,-14576830,-7473633,-9138735,2060392,11313496,-18426029,9924399,20194861,13380996 },
+ { -26378102,-7965207,-22167821,15789297,-18055342,-6168792,-1984914,15707771,26342023,10146099 },
+ },
+},
+{
+ {
+ { -26016874,-219943,21339191,-41388,19745256,-2878700,-29637280,2227040,21612326,-545728 },
+ { -13077387,1184228,23562814,-5970442,-20351244,-6348714,25764461,12243797,-20856566,11649658 },
+ { -10031494,11262626,27384172,2271902,26947504,-15997771,39944,6114064,33514190,2333242 },
+ },
+ {
+ { -21433588,-12421821,8119782,7219913,-21830522,-9016134,-6679750,-12670638,24350578,-13450001 },
+ { -4116307,-11271533,-23886186,4843615,-30088339,690623,-31536088,-10406836,8317860,12352766 },
+ { 18200138,-14475911,-33087759,-2696619,-23702521,-9102511,-23552096,-2287550,20712163,6719373 },
+ },
+ {
+ { 26656208,6075253,-7858556,1886072,-28344043,4262326,11117530,-3763210,26224235,-3297458 },
+ { -17168938,-14854097,-3395676,-16369877,-19954045,14050420,21728352,9493610,18620611,-16428628 },
+ { -13323321,13325349,11432106,5964811,18609221,6062965,-5269471,-9725556,-30701573,-16479657 },
+ },
+ {
+ { -23860538,-11233159,26961357,1640861,-32413112,-16737940,12248509,-5240639,13735342,1934062 },
+ { 25089769,6742589,17081145,-13406266,21909293,-16067981,-15136294,-3765346,-21277997,5473616 },
+ { 31883677,-7961101,1083432,-11572403,22828471,13290673,-7125085,12469656,29111212,-5451014 },
+ },
+ {
+ { 24244947,-15050407,-26262976,2791540,-14997599,16666678,24367466,6388839,-10295587,452383 },
+ { -25640782,-3417841,5217916,16224624,19987036,-4082269,-24236251,-5915248,15766062,8407814 },
+ { -20406999,13990231,15495425,16395525,5377168,15166495,-8917023,-4388953,-8067909,2276718 },
+ },
+ {
+ { 30157918,12924066,-17712050,9245753,19895028,3368142,-23827587,5096219,22740376,-7303417 },
+ { 2041139,-14256350,7783687,13876377,-25946985,-13352459,24051124,13742383,-15637599,13295222 },
+ { 33338237,-8505733,12532113,7977527,9106186,-1715251,-17720195,-4612972,-4451357,-14669444 },
+ },
+ {
+ { -20045281,5454097,-14346548,6447146,28862071,1883651,-2469266,-4141880,7770569,9620597 },
+ { 23208068,7979712,33071466,8149229,1758231,-10834995,30945528,-1694323,-33502340,-14767970 },
+ { 1439958,-16270480,-1079989,-793782,4625402,10647766,-5043801,1220118,30494170,-11440799 },
+ },
+ {
+ { -5037580,-13028295,-2970559,-3061767,15640974,-6701666,-26739026,926050,-1684339,-13333647 },
+ { 13908495,-3549272,30919928,-6273825,-21521863,7989039,9021034,9078865,3353509,4033511 },
+ { -29663431,-15113610,32259991,-344482,24295849,-12912123,23161163,8839127,27485041,7356032 },
+ },
+},
+{
+ {
+ { 9661027,705443,11980065,-5370154,-1628543,14661173,-6346142,2625015,28431036,-16771834 },
+ { -23839233,-8311415,-25945511,7480958,-17681669,-8354183,-22545972,14150565,15970762,4099461 },
+ { 29262576,16756590,26350592,-8793563,8529671,-11208050,13617293,-9937143,11465739,8317062 },
+ },
+ {
+ { -25493081,-6962928,32500200,-9419051,-23038724,-2302222,14898637,3848455,20969334,-5157516 },
+ { -20384450,-14347713,-18336405,13884722,-33039454,2842114,-21610826,-3649888,11177095,14989547 },
+ { -24496721,-11716016,16959896,2278463,12066309,10137771,13515641,2581286,-28487508,9930240 },
+ },
+ {
+ { -17751622,-2097826,16544300,-13009300,-15914807,-14949081,18345767,-13403753,16291481,-5314038 },
+ { -33229194,2553288,32678213,9875984,8534129,6889387,-9676774,6957617,4368891,9788741 },
+ { 16660756,7281060,-10830758,12911820,20108584,-8101676,-21722536,-8613148,16250552,-11111103 },
+ },
+ {
+ { -19765507,2390526,-16551031,14161980,1905286,6414907,4689584,10604807,-30190403,4782747 },
+ { -1354539,14736941,-7367442,-13292886,7710542,-14155590,-9981571,4383045,22546403,437323 },
+ { 31665577,-12180464,-16186830,1491339,-18368625,3294682,27343084,2786261,-30633590,-14097016 },
+ },
+ {
+ { -14467279,-683715,-33374107,7448552,19294360,14334329,-19690631,2355319,-19284671,-6114373 },
+ { 15121312,-15796162,6377020,-6031361,-10798111,-12957845,18952177,15496498,-29380133,11754228 },
+ { -2637277,-13483075,8488727,-14303896,12728761,-1622493,7141596,11724556,22761615,-10134141 },
+ },
+ {
+ { 16918416,11729663,-18083579,3022987,-31015732,-13339659,-28741185,-12227393,32851222,11717399 },
+ { 11166634,7338049,-6722523,4531520,-29468672,-7302055,31474879,3483633,-1193175,-4030831 },
+ { -185635,9921305,31456609,-13536438,-12013818,13348923,33142652,6546660,-19985279,-3948376 },
+ },
+ {
+ { -32460596,11266712,-11197107,-7899103,31703694,3855903,-8537131,-12833048,-30772034,-15486313 },
+ { -18006477,12709068,3991746,-6479188,-21491523,-10550425,-31135347,-16049879,10928917,3011958 },
+ { -6957757,-15594337,31696059,334240,29576716,14796075,-30831056,-12805180,18008031,10258577 },
+ },
+ {
+ { -22448644,15655569,7018479,-4410003,-30314266,-1201591,-1853465,1367120,25127874,6671743 },
+ { 29701166,-14373934,-10878120,9279288,-17568,13127210,21382910,11042292,25838796,4642684 },
+ { -20430234,14955537,-24126347,8124619,-5369288,-5990470,30468147,-13900640,18423289,4177476 },
+ },
+},
diff --git a/jni/ed25519/base2.h b/jni/ed25519/base2.h
new file mode 100644
index 00000000..8c538440
--- /dev/null
+++ b/jni/ed25519/base2.h
@@ -0,0 +1,40 @@
+ {
+ { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 },
+ { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 },
+ { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 },
+ },
+ {
+ { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 },
+ { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 },
+ { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 },
+ },
+ {
+ { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 },
+ { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 },
+ { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 },
+ },
+ {
+ { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 },
+ { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 },
+ { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 },
+ },
+ {
+ { -22518993,-6692182,14201702,-8745502,-23510406,8844726,18474211,-1361450,-13062696,13821877 },
+ { -6455177,-7839871,3374702,-4740862,-27098617,-10571707,31655028,-7212327,18853322,-14220951 },
+ { 4566830,-12963868,-28974889,-12240689,-7602672,-2830569,-8514358,-10431137,2207753,-3209784 },
+ },
+ {
+ { -25154831,-4185821,29681144,7868801,-6854661,-9423865,-12437364,-663000,-31111463,-16132436 },
+ { 25576264,-2703214,7349804,-11814844,16472782,9300885,3844789,15725684,171356,6466918 },
+ { 23103977,13316479,9739013,-16149481,817875,-15038942,8965339,-14088058,-30714912,16193877 },
+ },
+ {
+ { -33521811,3180713,-2394130,14003687,-16903474,-16270840,17238398,4729455,-18074513,9256800 },
+ { -25182317,-4174131,32336398,5036987,-21236817,11360617,22616405,9761698,-19827198,630305 },
+ { -13720693,2639453,-24237460,-7406481,9494427,-5774029,-6554551,-15960994,-2449256,-14291300 },
+ },
+ {
+ { -3151181,-5046075,9282714,6866145,-31907062,-863023,-18940575,15033784,25105118,-7894876 },
+ { -24326370,15950226,-31801215,-14592823,-11662737,-5090925,1573892,-2625887,2198790,-15804619 },
+ { -3099351,10324967,-2241613,7453183,-5446979,-2735503,-13812022,-16236442,-32461234,-12290683 },
+ },
diff --git a/jni/ed25519/d.h b/jni/ed25519/d.h
new file mode 100644
index 00000000..e25f5783
--- /dev/null
+++ b/jni/ed25519/d.h
@@ -0,0 +1 @@
+-10913610,13857413,-15372611,6949391,114729,-8787816,-6275908,-3247719,-18696448,-12055116
diff --git a/jni/ed25519/d2.h b/jni/ed25519/d2.h
new file mode 100644
index 00000000..01aaec75
--- /dev/null
+++ b/jni/ed25519/d2.h
@@ -0,0 +1 @@
+-21827239,-5839606,-30745221,13898782,229458,15978800,-12551817,-6495438,29715968,9444199
diff --git a/jni/ed25519/fe.h b/jni/ed25519/fe.h
new file mode 100644
index 00000000..60c308ba
--- /dev/null
+++ b/jni/ed25519/fe.h
@@ -0,0 +1,56 @@
+#ifndef FE_H
+#define FE_H
+
+#include "crypto_int32.h"
+
+typedef crypto_int32 fe[10];
+
+/*
+fe means field element.
+Here the field is \Z/(2^255-19).
+An element t, entries t[0]...t[9], represents the integer
+t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
+Bounds on each t[i] vary depending on context.
+*/
+
+#define fe_frombytes crypto_sign_ed25519_ref10_fe_frombytes
+#define fe_tobytes crypto_sign_ed25519_ref10_fe_tobytes
+#define fe_copy crypto_sign_ed25519_ref10_fe_copy
+#define fe_isnonzero crypto_sign_ed25519_ref10_fe_isnonzero
+#define fe_isnegative crypto_sign_ed25519_ref10_fe_isnegative
+#define fe_0 crypto_sign_ed25519_ref10_fe_0
+#define fe_1 crypto_sign_ed25519_ref10_fe_1
+#define fe_cswap crypto_sign_ed25519_ref10_fe_cswap
+#define fe_cmov crypto_sign_ed25519_ref10_fe_cmov
+#define fe_add crypto_sign_ed25519_ref10_fe_add
+#define fe_sub crypto_sign_ed25519_ref10_fe_sub
+#define fe_neg crypto_sign_ed25519_ref10_fe_neg
+#define fe_mul crypto_sign_ed25519_ref10_fe_mul
+#define fe_sq crypto_sign_ed25519_ref10_fe_sq
+#define fe_sq2 crypto_sign_ed25519_ref10_fe_sq2
+#define fe_mul121666 crypto_sign_ed25519_ref10_fe_mul121666
+#define fe_invert crypto_sign_ed25519_ref10_fe_invert
+#define fe_pow22523 crypto_sign_ed25519_ref10_fe_pow22523
+
+extern void fe_frombytes(fe,const unsigned char *);
+extern void fe_tobytes(unsigned char *,const fe);
+
+extern void fe_copy(fe,const fe);
+extern int fe_isnonzero(const fe);
+extern int fe_isnegative(const fe);
+extern void fe_0(fe);
+extern void fe_1(fe);
+extern void fe_cswap(fe,fe,unsigned int);
+extern void fe_cmov(fe,const fe,unsigned int);
+
+extern void fe_add(fe,const fe,const fe);
+extern void fe_sub(fe,const fe,const fe);
+extern void fe_neg(fe,const fe);
+extern void fe_mul(fe,const fe,const fe);
+extern void fe_sq(fe,const fe);
+extern void fe_sq2(fe,const fe);
+extern void fe_mul121666(fe,const fe);
+extern void fe_invert(fe,const fe);
+extern void fe_pow22523(fe,const fe);
+
+#endif
diff --git a/jni/ed25519/fe_0.c b/jni/ed25519/fe_0.c
new file mode 100644
index 00000000..ec879d73
--- /dev/null
+++ b/jni/ed25519/fe_0.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+
+/*
+h = 0
+*/
+
+void fe_0(fe h)
+{
+ h[0] = 0;
+ h[1] = 0;
+ h[2] = 0;
+ h[3] = 0;
+ h[4] = 0;
+ h[5] = 0;
+ h[6] = 0;
+ h[7] = 0;
+ h[8] = 0;
+ h[9] = 0;
+}
diff --git a/jni/ed25519/fe_1.c b/jni/ed25519/fe_1.c
new file mode 100644
index 00000000..8cf77848
--- /dev/null
+++ b/jni/ed25519/fe_1.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+
+/*
+h = 1
+*/
+
+void fe_1(fe h)
+{
+ h[0] = 1;
+ h[1] = 0;
+ h[2] = 0;
+ h[3] = 0;
+ h[4] = 0;
+ h[5] = 0;
+ h[6] = 0;
+ h[7] = 0;
+ h[8] = 0;
+ h[9] = 0;
+}
diff --git a/jni/ed25519/fe_add.c b/jni/ed25519/fe_add.c
new file mode 100644
index 00000000..e6a81da2
--- /dev/null
+++ b/jni/ed25519/fe_add.c
@@ -0,0 +1,57 @@
+#include "fe.h"
+
+/*
+h = f + g
+Can overlap h with f or g.
+
+Preconditions:
+ |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+ |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+ |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+void fe_add(fe h,const fe f,const fe g)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 g0 = g[0];
+ crypto_int32 g1 = g[1];
+ crypto_int32 g2 = g[2];
+ crypto_int32 g3 = g[3];
+ crypto_int32 g4 = g[4];
+ crypto_int32 g5 = g[5];
+ crypto_int32 g6 = g[6];
+ crypto_int32 g7 = g[7];
+ crypto_int32 g8 = g[8];
+ crypto_int32 g9 = g[9];
+ crypto_int32 h0 = f0 + g0;
+ crypto_int32 h1 = f1 + g1;
+ crypto_int32 h2 = f2 + g2;
+ crypto_int32 h3 = f3 + g3;
+ crypto_int32 h4 = f4 + g4;
+ crypto_int32 h5 = f5 + g5;
+ crypto_int32 h6 = f6 + g6;
+ crypto_int32 h7 = f7 + g7;
+ crypto_int32 h8 = f8 + g8;
+ crypto_int32 h9 = f9 + g9;
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_cmov.c b/jni/ed25519/fe_cmov.c
new file mode 100644
index 00000000..8ca584fb
--- /dev/null
+++ b/jni/ed25519/fe_cmov.c
@@ -0,0 +1,63 @@
+#include "fe.h"
+
+/*
+Replace (f,g) with (g,g) if b == 1;
+replace (f,g) with (f,g) if b == 0.
+
+Preconditions: b in {0,1}.
+*/
+
+void fe_cmov(fe f,const fe g,unsigned int b)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 g0 = g[0];
+ crypto_int32 g1 = g[1];
+ crypto_int32 g2 = g[2];
+ crypto_int32 g3 = g[3];
+ crypto_int32 g4 = g[4];
+ crypto_int32 g5 = g[5];
+ crypto_int32 g6 = g[6];
+ crypto_int32 g7 = g[7];
+ crypto_int32 g8 = g[8];
+ crypto_int32 g9 = g[9];
+ crypto_int32 x0 = f0 ^ g0;
+ crypto_int32 x1 = f1 ^ g1;
+ crypto_int32 x2 = f2 ^ g2;
+ crypto_int32 x3 = f3 ^ g3;
+ crypto_int32 x4 = f4 ^ g4;
+ crypto_int32 x5 = f5 ^ g5;
+ crypto_int32 x6 = f6 ^ g6;
+ crypto_int32 x7 = f7 ^ g7;
+ crypto_int32 x8 = f8 ^ g8;
+ crypto_int32 x9 = f9 ^ g9;
+ b = -b;
+ x0 &= b;
+ x1 &= b;
+ x2 &= b;
+ x3 &= b;
+ x4 &= b;
+ x5 &= b;
+ x6 &= b;
+ x7 &= b;
+ x8 &= b;
+ x9 &= b;
+ f[0] = f0 ^ x0;
+ f[1] = f1 ^ x1;
+ f[2] = f2 ^ x2;
+ f[3] = f3 ^ x3;
+ f[4] = f4 ^ x4;
+ f[5] = f5 ^ x5;
+ f[6] = f6 ^ x6;
+ f[7] = f7 ^ x7;
+ f[8] = f8 ^ x8;
+ f[9] = f9 ^ x9;
+}
diff --git a/jni/ed25519/fe_copy.c b/jni/ed25519/fe_copy.c
new file mode 100644
index 00000000..9c5bf865
--- /dev/null
+++ b/jni/ed25519/fe_copy.c
@@ -0,0 +1,29 @@
+#include "fe.h"
+
+/*
+h = f
+*/
+
+void fe_copy(fe h,const fe f)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ h[0] = f0;
+ h[1] = f1;
+ h[2] = f2;
+ h[3] = f3;
+ h[4] = f4;
+ h[5] = f5;
+ h[6] = f6;
+ h[7] = f7;
+ h[8] = f8;
+ h[9] = f9;
+}
diff --git a/jni/ed25519/fe_frombytes.c b/jni/ed25519/fe_frombytes.c
new file mode 100644
index 00000000..5c179174
--- /dev/null
+++ b/jni/ed25519/fe_frombytes.c
@@ -0,0 +1,73 @@
+#include "fe.h"
+#include "crypto_int64.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ result |= ((crypto_uint64) in[3]) << 24;
+ return result;
+}
+
+/*
+Ignores top bit of h.
+*/
+
+void fe_frombytes(fe h,const unsigned char *s)
+{
+ crypto_int64 h0 = load_4(s);
+ crypto_int64 h1 = load_3(s + 4) << 6;
+ crypto_int64 h2 = load_3(s + 7) << 5;
+ crypto_int64 h3 = load_3(s + 10) << 3;
+ crypto_int64 h4 = load_3(s + 13) << 2;
+ crypto_int64 h5 = load_4(s + 16);
+ crypto_int64 h6 = load_3(s + 20) << 7;
+ crypto_int64 h7 = load_3(s + 23) << 5;
+ crypto_int64 h8 = load_3(s + 26) << 4;
+ crypto_int64 h9 = (load_3(s + 29) & 8388607) << 2;
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+
+ carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+ carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+ carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+ carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+ carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+ carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+ carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+ carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_invert.c b/jni/ed25519/fe_invert.c
new file mode 100644
index 00000000..bcfdb8ff
--- /dev/null
+++ b/jni/ed25519/fe_invert.c
@@ -0,0 +1,14 @@
+#include "fe.h"
+
+void fe_invert(fe out,const fe z)
+{
+ fe t0;
+ fe t1;
+ fe t2;
+ fe t3;
+ int i;
+
+#include "pow225521.h"
+
+ return;
+}
diff --git a/jni/ed25519/fe_isnegative.c b/jni/ed25519/fe_isnegative.c
new file mode 100644
index 00000000..3b2c8b8d
--- /dev/null
+++ b/jni/ed25519/fe_isnegative.c
@@ -0,0 +1,16 @@
+#include "fe.h"
+
+/*
+return 1 if f is in {1,3,5,...,q-2}
+return 0 if f is in {0,2,4,...,q-1}
+
+Preconditions:
+ |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+int fe_isnegative(const fe f)
+{
+ unsigned char s[32];
+ fe_tobytes(s,f);
+ return s[0] & 1;
+}
diff --git a/jni/ed25519/fe_isnonzero.c b/jni/ed25519/fe_isnonzero.c
new file mode 100644
index 00000000..47568001
--- /dev/null
+++ b/jni/ed25519/fe_isnonzero.c
@@ -0,0 +1,19 @@
+#include "fe.h"
+#include "crypto_verify_32.h"
+
+/*
+return 1 if f == 0
+return 0 if f != 0
+
+Preconditions:
+ |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+static const unsigned char zero[32];
+
+int fe_isnonzero(const fe f)
+{
+ unsigned char s[32];
+ fe_tobytes(s,f);
+ return crypto_verify_32(s,zero);
+}
diff --git a/jni/ed25519/fe_mul.c b/jni/ed25519/fe_mul.c
new file mode 100644
index 00000000..26ca8b36
--- /dev/null
+++ b/jni/ed25519/fe_mul.c
@@ -0,0 +1,253 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = f * g
+Can overlap h with f or g.
+
+Preconditions:
+ |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+ |g| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+ |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+Notes on implementation strategy:
+
+Using schoolbook multiplication.
+Karatsuba would save a little in some cost models.
+
+Most multiplications by 2 and 19 are 32-bit precomputations;
+cheaper than 64-bit postcomputations.
+
+There is one remaining multiplication by 19 in the carry chain;
+one *19 precomputation can be merged into this,
+but the resulting data flow is considerably less clean.
+
+There are 12 carries below.
+10 of them are 2-way parallelizable and vectorizable.
+Can get away with 11 carries, but then data flow is much deeper.
+
+With tighter constraints on inputs can squeeze carries into int32.
+*/
+
+void fe_mul(fe h,const fe f,const fe g)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 g0 = g[0];
+ crypto_int32 g1 = g[1];
+ crypto_int32 g2 = g[2];
+ crypto_int32 g3 = g[3];
+ crypto_int32 g4 = g[4];
+ crypto_int32 g5 = g[5];
+ crypto_int32 g6 = g[6];
+ crypto_int32 g7 = g[7];
+ crypto_int32 g8 = g[8];
+ crypto_int32 g9 = g[9];
+ crypto_int32 g1_19 = 19 * g1; /* 1.959375*2^29 */
+ crypto_int32 g2_19 = 19 * g2; /* 1.959375*2^30; still ok */
+ crypto_int32 g3_19 = 19 * g3;
+ crypto_int32 g4_19 = 19 * g4;
+ crypto_int32 g5_19 = 19 * g5;
+ crypto_int32 g6_19 = 19 * g6;
+ crypto_int32 g7_19 = 19 * g7;
+ crypto_int32 g8_19 = 19 * g8;
+ crypto_int32 g9_19 = 19 * g9;
+ crypto_int32 f1_2 = 2 * f1;
+ crypto_int32 f3_2 = 2 * f3;
+ crypto_int32 f5_2 = 2 * f5;
+ crypto_int32 f7_2 = 2 * f7;
+ crypto_int32 f9_2 = 2 * f9;
+ crypto_int64 f0g0 = f0 * (crypto_int64) g0;
+ crypto_int64 f0g1 = f0 * (crypto_int64) g1;
+ crypto_int64 f0g2 = f0 * (crypto_int64) g2;
+ crypto_int64 f0g3 = f0 * (crypto_int64) g3;
+ crypto_int64 f0g4 = f0 * (crypto_int64) g4;
+ crypto_int64 f0g5 = f0 * (crypto_int64) g5;
+ crypto_int64 f0g6 = f0 * (crypto_int64) g6;
+ crypto_int64 f0g7 = f0 * (crypto_int64) g7;
+ crypto_int64 f0g8 = f0 * (crypto_int64) g8;
+ crypto_int64 f0g9 = f0 * (crypto_int64) g9;
+ crypto_int64 f1g0 = f1 * (crypto_int64) g0;
+ crypto_int64 f1g1_2 = f1_2 * (crypto_int64) g1;
+ crypto_int64 f1g2 = f1 * (crypto_int64) g2;
+ crypto_int64 f1g3_2 = f1_2 * (crypto_int64) g3;
+ crypto_int64 f1g4 = f1 * (crypto_int64) g4;
+ crypto_int64 f1g5_2 = f1_2 * (crypto_int64) g5;
+ crypto_int64 f1g6 = f1 * (crypto_int64) g6;
+ crypto_int64 f1g7_2 = f1_2 * (crypto_int64) g7;
+ crypto_int64 f1g8 = f1 * (crypto_int64) g8;
+ crypto_int64 f1g9_38 = f1_2 * (crypto_int64) g9_19;
+ crypto_int64 f2g0 = f2 * (crypto_int64) g0;
+ crypto_int64 f2g1 = f2 * (crypto_int64) g1;
+ crypto_int64 f2g2 = f2 * (crypto_int64) g2;
+ crypto_int64 f2g3 = f2 * (crypto_int64) g3;
+ crypto_int64 f2g4 = f2 * (crypto_int64) g4;
+ crypto_int64 f2g5 = f2 * (crypto_int64) g5;
+ crypto_int64 f2g6 = f2 * (crypto_int64) g6;
+ crypto_int64 f2g7 = f2 * (crypto_int64) g7;
+ crypto_int64 f2g8_19 = f2 * (crypto_int64) g8_19;
+ crypto_int64 f2g9_19 = f2 * (crypto_int64) g9_19;
+ crypto_int64 f3g0 = f3 * (crypto_int64) g0;
+ crypto_int64 f3g1_2 = f3_2 * (crypto_int64) g1;
+ crypto_int64 f3g2 = f3 * (crypto_int64) g2;
+ crypto_int64 f3g3_2 = f3_2 * (crypto_int64) g3;
+ crypto_int64 f3g4 = f3 * (crypto_int64) g4;
+ crypto_int64 f3g5_2 = f3_2 * (crypto_int64) g5;
+ crypto_int64 f3g6 = f3 * (crypto_int64) g6;
+ crypto_int64 f3g7_38 = f3_2 * (crypto_int64) g7_19;
+ crypto_int64 f3g8_19 = f3 * (crypto_int64) g8_19;
+ crypto_int64 f3g9_38 = f3_2 * (crypto_int64) g9_19;
+ crypto_int64 f4g0 = f4 * (crypto_int64) g0;
+ crypto_int64 f4g1 = f4 * (crypto_int64) g1;
+ crypto_int64 f4g2 = f4 * (crypto_int64) g2;
+ crypto_int64 f4g3 = f4 * (crypto_int64) g3;
+ crypto_int64 f4g4 = f4 * (crypto_int64) g4;
+ crypto_int64 f4g5 = f4 * (crypto_int64) g5;
+ crypto_int64 f4g6_19 = f4 * (crypto_int64) g6_19;
+ crypto_int64 f4g7_19 = f4 * (crypto_int64) g7_19;
+ crypto_int64 f4g8_19 = f4 * (crypto_int64) g8_19;
+ crypto_int64 f4g9_19 = f4 * (crypto_int64) g9_19;
+ crypto_int64 f5g0 = f5 * (crypto_int64) g0;
+ crypto_int64 f5g1_2 = f5_2 * (crypto_int64) g1;
+ crypto_int64 f5g2 = f5 * (crypto_int64) g2;
+ crypto_int64 f5g3_2 = f5_2 * (crypto_int64) g3;
+ crypto_int64 f5g4 = f5 * (crypto_int64) g4;
+ crypto_int64 f5g5_38 = f5_2 * (crypto_int64) g5_19;
+ crypto_int64 f5g6_19 = f5 * (crypto_int64) g6_19;
+ crypto_int64 f5g7_38 = f5_2 * (crypto_int64) g7_19;
+ crypto_int64 f5g8_19 = f5 * (crypto_int64) g8_19;
+ crypto_int64 f5g9_38 = f5_2 * (crypto_int64) g9_19;
+ crypto_int64 f6g0 = f6 * (crypto_int64) g0;
+ crypto_int64 f6g1 = f6 * (crypto_int64) g1;
+ crypto_int64 f6g2 = f6 * (crypto_int64) g2;
+ crypto_int64 f6g3 = f6 * (crypto_int64) g3;
+ crypto_int64 f6g4_19 = f6 * (crypto_int64) g4_19;
+ crypto_int64 f6g5_19 = f6 * (crypto_int64) g5_19;
+ crypto_int64 f6g6_19 = f6 * (crypto_int64) g6_19;
+ crypto_int64 f6g7_19 = f6 * (crypto_int64) g7_19;
+ crypto_int64 f6g8_19 = f6 * (crypto_int64) g8_19;
+ crypto_int64 f6g9_19 = f6 * (crypto_int64) g9_19;
+ crypto_int64 f7g0 = f7 * (crypto_int64) g0;
+ crypto_int64 f7g1_2 = f7_2 * (crypto_int64) g1;
+ crypto_int64 f7g2 = f7 * (crypto_int64) g2;
+ crypto_int64 f7g3_38 = f7_2 * (crypto_int64) g3_19;
+ crypto_int64 f7g4_19 = f7 * (crypto_int64) g4_19;
+ crypto_int64 f7g5_38 = f7_2 * (crypto_int64) g5_19;
+ crypto_int64 f7g6_19 = f7 * (crypto_int64) g6_19;
+ crypto_int64 f7g7_38 = f7_2 * (crypto_int64) g7_19;
+ crypto_int64 f7g8_19 = f7 * (crypto_int64) g8_19;
+ crypto_int64 f7g9_38 = f7_2 * (crypto_int64) g9_19;
+ crypto_int64 f8g0 = f8 * (crypto_int64) g0;
+ crypto_int64 f8g1 = f8 * (crypto_int64) g1;
+ crypto_int64 f8g2_19 = f8 * (crypto_int64) g2_19;
+ crypto_int64 f8g3_19 = f8 * (crypto_int64) g3_19;
+ crypto_int64 f8g4_19 = f8 * (crypto_int64) g4_19;
+ crypto_int64 f8g5_19 = f8 * (crypto_int64) g5_19;
+ crypto_int64 f8g6_19 = f8 * (crypto_int64) g6_19;
+ crypto_int64 f8g7_19 = f8 * (crypto_int64) g7_19;
+ crypto_int64 f8g8_19 = f8 * (crypto_int64) g8_19;
+ crypto_int64 f8g9_19 = f8 * (crypto_int64) g9_19;
+ crypto_int64 f9g0 = f9 * (crypto_int64) g0;
+ crypto_int64 f9g1_38 = f9_2 * (crypto_int64) g1_19;
+ crypto_int64 f9g2_19 = f9 * (crypto_int64) g2_19;
+ crypto_int64 f9g3_38 = f9_2 * (crypto_int64) g3_19;
+ crypto_int64 f9g4_19 = f9 * (crypto_int64) g4_19;
+ crypto_int64 f9g5_38 = f9_2 * (crypto_int64) g5_19;
+ crypto_int64 f9g6_19 = f9 * (crypto_int64) g6_19;
+ crypto_int64 f9g7_38 = f9_2 * (crypto_int64) g7_19;
+ crypto_int64 f9g8_19 = f9 * (crypto_int64) g8_19;
+ crypto_int64 f9g9_38 = f9_2 * (crypto_int64) g9_19;
+ crypto_int64 h0 = f0g0+f1g9_38+f2g8_19+f3g7_38+f4g6_19+f5g5_38+f6g4_19+f7g3_38+f8g2_19+f9g1_38;
+ crypto_int64 h1 = f0g1+f1g0 +f2g9_19+f3g8_19+f4g7_19+f5g6_19+f6g5_19+f7g4_19+f8g3_19+f9g2_19;
+ crypto_int64 h2 = f0g2+f1g1_2 +f2g0 +f3g9_38+f4g8_19+f5g7_38+f6g6_19+f7g5_38+f8g4_19+f9g3_38;
+ crypto_int64 h3 = f0g3+f1g2 +f2g1 +f3g0 +f4g9_19+f5g8_19+f6g7_19+f7g6_19+f8g5_19+f9g4_19;
+ crypto_int64 h4 = f0g4+f1g3_2 +f2g2 +f3g1_2 +f4g0 +f5g9_38+f6g8_19+f7g7_38+f8g6_19+f9g5_38;
+ crypto_int64 h5 = f0g5+f1g4 +f2g3 +f3g2 +f4g1 +f5g0 +f6g9_19+f7g8_19+f8g7_19+f9g6_19;
+ crypto_int64 h6 = f0g6+f1g5_2 +f2g4 +f3g3_2 +f4g2 +f5g1_2 +f6g0 +f7g9_38+f8g8_19+f9g7_38;
+ crypto_int64 h7 = f0g7+f1g6 +f2g5 +f3g4 +f4g3 +f5g2 +f6g1 +f7g0 +f8g9_19+f9g8_19;
+ crypto_int64 h8 = f0g8+f1g7_2 +f2g6 +f3g5_2 +f4g4 +f5g3_2 +f6g2 +f7g1_2 +f8g0 +f9g9_38;
+ crypto_int64 h9 = f0g9+f1g8 +f2g7 +f3g6 +f4g5 +f5g4 +f6g3 +f7g2 +f8g1 +f9g0 ;
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+
+ /*
+ |h0| <= (1.65*1.65*2^52*(1+19+19+19+19)+1.65*1.65*2^50*(38+38+38+38+38))
+ i.e. |h0| <= 1.4*2^60; narrower ranges for h2, h4, h6, h8
+ |h1| <= (1.65*1.65*2^51*(1+1+19+19+19+19+19+19+19+19))
+ i.e. |h1| <= 1.7*2^59; narrower ranges for h3, h5, h7, h9
+ */
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+ /* |h0| <= 2^25 */
+ /* |h4| <= 2^25 */
+ /* |h1| <= 1.71*2^59 */
+ /* |h5| <= 1.71*2^59 */
+
+ carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+ carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+ /* |h1| <= 2^24; from now on fits into int32 */
+ /* |h5| <= 2^24; from now on fits into int32 */
+ /* |h2| <= 1.41*2^60 */
+ /* |h6| <= 1.41*2^60 */
+
+ carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+ carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+ /* |h2| <= 2^25; from now on fits into int32 unchanged */
+ /* |h6| <= 2^25; from now on fits into int32 unchanged */
+ /* |h3| <= 1.71*2^59 */
+ /* |h7| <= 1.71*2^59 */
+
+ carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+ carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+ /* |h3| <= 2^24; from now on fits into int32 unchanged */
+ /* |h7| <= 2^24; from now on fits into int32 unchanged */
+ /* |h4| <= 1.72*2^34 */
+ /* |h8| <= 1.41*2^60 */
+
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+ carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+ /* |h4| <= 2^25; from now on fits into int32 unchanged */
+ /* |h8| <= 2^25; from now on fits into int32 unchanged */
+ /* |h5| <= 1.01*2^24 */
+ /* |h9| <= 1.71*2^59 */
+
+ carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+ /* |h9| <= 2^24; from now on fits into int32 unchanged */
+ /* |h0| <= 1.1*2^39 */
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+ /* |h0| <= 2^25; from now on fits into int32 unchanged */
+ /* |h1| <= 1.01*2^24 */
+
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_neg.c b/jni/ed25519/fe_neg.c
new file mode 100644
index 00000000..2078ce52
--- /dev/null
+++ b/jni/ed25519/fe_neg.c
@@ -0,0 +1,45 @@
+#include "fe.h"
+
+/*
+h = -f
+
+Preconditions:
+ |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+ |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+*/
+
+void fe_neg(fe h,const fe f)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 h0 = -f0;
+ crypto_int32 h1 = -f1;
+ crypto_int32 h2 = -f2;
+ crypto_int32 h3 = -f3;
+ crypto_int32 h4 = -f4;
+ crypto_int32 h5 = -f5;
+ crypto_int32 h6 = -f6;
+ crypto_int32 h7 = -f7;
+ crypto_int32 h8 = -f8;
+ crypto_int32 h9 = -f9;
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_pow22523.c b/jni/ed25519/fe_pow22523.c
new file mode 100644
index 00000000..56675a59
--- /dev/null
+++ b/jni/ed25519/fe_pow22523.c
@@ -0,0 +1,13 @@
+#include "fe.h"
+
+void fe_pow22523(fe out,const fe z)
+{
+ fe t0;
+ fe t1;
+ fe t2;
+ int i;
+
+#include "pow22523.h"
+
+ return;
+}
diff --git a/jni/ed25519/fe_sq.c b/jni/ed25519/fe_sq.c
new file mode 100644
index 00000000..8dd11984
--- /dev/null
+++ b/jni/ed25519/fe_sq.c
@@ -0,0 +1,149 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = f * f
+Can overlap h with f.
+
+Preconditions:
+ |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+ |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+See fe_mul.c for discussion of implementation strategy.
+*/
+
+void fe_sq(fe h,const fe f)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 f0_2 = 2 * f0;
+ crypto_int32 f1_2 = 2 * f1;
+ crypto_int32 f2_2 = 2 * f2;
+ crypto_int32 f3_2 = 2 * f3;
+ crypto_int32 f4_2 = 2 * f4;
+ crypto_int32 f5_2 = 2 * f5;
+ crypto_int32 f6_2 = 2 * f6;
+ crypto_int32 f7_2 = 2 * f7;
+ crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */
+ crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */
+ crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */
+ crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */
+ crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */
+ crypto_int64 f0f0 = f0 * (crypto_int64) f0;
+ crypto_int64 f0f1_2 = f0_2 * (crypto_int64) f1;
+ crypto_int64 f0f2_2 = f0_2 * (crypto_int64) f2;
+ crypto_int64 f0f3_2 = f0_2 * (crypto_int64) f3;
+ crypto_int64 f0f4_2 = f0_2 * (crypto_int64) f4;
+ crypto_int64 f0f5_2 = f0_2 * (crypto_int64) f5;
+ crypto_int64 f0f6_2 = f0_2 * (crypto_int64) f6;
+ crypto_int64 f0f7_2 = f0_2 * (crypto_int64) f7;
+ crypto_int64 f0f8_2 = f0_2 * (crypto_int64) f8;
+ crypto_int64 f0f9_2 = f0_2 * (crypto_int64) f9;
+ crypto_int64 f1f1_2 = f1_2 * (crypto_int64) f1;
+ crypto_int64 f1f2_2 = f1_2 * (crypto_int64) f2;
+ crypto_int64 f1f3_4 = f1_2 * (crypto_int64) f3_2;
+ crypto_int64 f1f4_2 = f1_2 * (crypto_int64) f4;
+ crypto_int64 f1f5_4 = f1_2 * (crypto_int64) f5_2;
+ crypto_int64 f1f6_2 = f1_2 * (crypto_int64) f6;
+ crypto_int64 f1f7_4 = f1_2 * (crypto_int64) f7_2;
+ crypto_int64 f1f8_2 = f1_2 * (crypto_int64) f8;
+ crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38;
+ crypto_int64 f2f2 = f2 * (crypto_int64) f2;
+ crypto_int64 f2f3_2 = f2_2 * (crypto_int64) f3;
+ crypto_int64 f2f4_2 = f2_2 * (crypto_int64) f4;
+ crypto_int64 f2f5_2 = f2_2 * (crypto_int64) f5;
+ crypto_int64 f2f6_2 = f2_2 * (crypto_int64) f6;
+ crypto_int64 f2f7_2 = f2_2 * (crypto_int64) f7;
+ crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19;
+ crypto_int64 f2f9_38 = f2 * (crypto_int64) f9_38;
+ crypto_int64 f3f3_2 = f3_2 * (crypto_int64) f3;
+ crypto_int64 f3f4_2 = f3_2 * (crypto_int64) f4;
+ crypto_int64 f3f5_4 = f3_2 * (crypto_int64) f5_2;
+ crypto_int64 f3f6_2 = f3_2 * (crypto_int64) f6;
+ crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38;
+ crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19;
+ crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38;
+ crypto_int64 f4f4 = f4 * (crypto_int64) f4;
+ crypto_int64 f4f5_2 = f4_2 * (crypto_int64) f5;
+ crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19;
+ crypto_int64 f4f7_38 = f4 * (crypto_int64) f7_38;
+ crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19;
+ crypto_int64 f4f9_38 = f4 * (crypto_int64) f9_38;
+ crypto_int64 f5f5_38 = f5 * (crypto_int64) f5_38;
+ crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19;
+ crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38;
+ crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19;
+ crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38;
+ crypto_int64 f6f6_19 = f6 * (crypto_int64) f6_19;
+ crypto_int64 f6f7_38 = f6 * (crypto_int64) f7_38;
+ crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19;
+ crypto_int64 f6f9_38 = f6 * (crypto_int64) f9_38;
+ crypto_int64 f7f7_38 = f7 * (crypto_int64) f7_38;
+ crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19;
+ crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38;
+ crypto_int64 f8f8_19 = f8 * (crypto_int64) f8_19;
+ crypto_int64 f8f9_38 = f8 * (crypto_int64) f9_38;
+ crypto_int64 f9f9_38 = f9 * (crypto_int64) f9_38;
+ crypto_int64 h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
+ crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
+ crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
+ crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
+ crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
+ crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
+ crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
+ crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
+ crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
+ crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+
+ carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+ carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+
+ carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+ carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+
+ carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+ carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+ carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+ carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_sq2.c b/jni/ed25519/fe_sq2.c
new file mode 100644
index 00000000..026ed3aa
--- /dev/null
+++ b/jni/ed25519/fe_sq2.c
@@ -0,0 +1,160 @@
+#include "fe.h"
+#include "crypto_int64.h"
+
+/*
+h = 2 * f * f
+Can overlap h with f.
+
+Preconditions:
+ |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+
+Postconditions:
+ |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+*/
+
+/*
+See fe_mul.c for discussion of implementation strategy.
+*/
+
+void fe_sq2(fe h,const fe f)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 f0_2 = 2 * f0;
+ crypto_int32 f1_2 = 2 * f1;
+ crypto_int32 f2_2 = 2 * f2;
+ crypto_int32 f3_2 = 2 * f3;
+ crypto_int32 f4_2 = 2 * f4;
+ crypto_int32 f5_2 = 2 * f5;
+ crypto_int32 f6_2 = 2 * f6;
+ crypto_int32 f7_2 = 2 * f7;
+ crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */
+ crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */
+ crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */
+ crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */
+ crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */
+ crypto_int64 f0f0 = f0 * (crypto_int64) f0;
+ crypto_int64 f0f1_2 = f0_2 * (crypto_int64) f1;
+ crypto_int64 f0f2_2 = f0_2 * (crypto_int64) f2;
+ crypto_int64 f0f3_2 = f0_2 * (crypto_int64) f3;
+ crypto_int64 f0f4_2 = f0_2 * (crypto_int64) f4;
+ crypto_int64 f0f5_2 = f0_2 * (crypto_int64) f5;
+ crypto_int64 f0f6_2 = f0_2 * (crypto_int64) f6;
+ crypto_int64 f0f7_2 = f0_2 * (crypto_int64) f7;
+ crypto_int64 f0f8_2 = f0_2 * (crypto_int64) f8;
+ crypto_int64 f0f9_2 = f0_2 * (crypto_int64) f9;
+ crypto_int64 f1f1_2 = f1_2 * (crypto_int64) f1;
+ crypto_int64 f1f2_2 = f1_2 * (crypto_int64) f2;
+ crypto_int64 f1f3_4 = f1_2 * (crypto_int64) f3_2;
+ crypto_int64 f1f4_2 = f1_2 * (crypto_int64) f4;
+ crypto_int64 f1f5_4 = f1_2 * (crypto_int64) f5_2;
+ crypto_int64 f1f6_2 = f1_2 * (crypto_int64) f6;
+ crypto_int64 f1f7_4 = f1_2 * (crypto_int64) f7_2;
+ crypto_int64 f1f8_2 = f1_2 * (crypto_int64) f8;
+ crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38;
+ crypto_int64 f2f2 = f2 * (crypto_int64) f2;
+ crypto_int64 f2f3_2 = f2_2 * (crypto_int64) f3;
+ crypto_int64 f2f4_2 = f2_2 * (crypto_int64) f4;
+ crypto_int64 f2f5_2 = f2_2 * (crypto_int64) f5;
+ crypto_int64 f2f6_2 = f2_2 * (crypto_int64) f6;
+ crypto_int64 f2f7_2 = f2_2 * (crypto_int64) f7;
+ crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19;
+ crypto_int64 f2f9_38 = f2 * (crypto_int64) f9_38;
+ crypto_int64 f3f3_2 = f3_2 * (crypto_int64) f3;
+ crypto_int64 f3f4_2 = f3_2 * (crypto_int64) f4;
+ crypto_int64 f3f5_4 = f3_2 * (crypto_int64) f5_2;
+ crypto_int64 f3f6_2 = f3_2 * (crypto_int64) f6;
+ crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38;
+ crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19;
+ crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38;
+ crypto_int64 f4f4 = f4 * (crypto_int64) f4;
+ crypto_int64 f4f5_2 = f4_2 * (crypto_int64) f5;
+ crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19;
+ crypto_int64 f4f7_38 = f4 * (crypto_int64) f7_38;
+ crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19;
+ crypto_int64 f4f9_38 = f4 * (crypto_int64) f9_38;
+ crypto_int64 f5f5_38 = f5 * (crypto_int64) f5_38;
+ crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19;
+ crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38;
+ crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19;
+ crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38;
+ crypto_int64 f6f6_19 = f6 * (crypto_int64) f6_19;
+ crypto_int64 f6f7_38 = f6 * (crypto_int64) f7_38;
+ crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19;
+ crypto_int64 f6f9_38 = f6 * (crypto_int64) f9_38;
+ crypto_int64 f7f7_38 = f7 * (crypto_int64) f7_38;
+ crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19;
+ crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38;
+ crypto_int64 f8f8_19 = f8 * (crypto_int64) f8_19;
+ crypto_int64 f8f9_38 = f8 * (crypto_int64) f9_38;
+ crypto_int64 f9f9_38 = f9 * (crypto_int64) f9_38;
+ crypto_int64 h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
+ crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
+ crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
+ crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
+ crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
+ crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
+ crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
+ crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
+ crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
+ crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+
+ h0 += h0;
+ h1 += h1;
+ h2 += h2;
+ h3 += h3;
+ h4 += h4;
+ h5 += h5;
+ h6 += h6;
+ h7 += h7;
+ h8 += h8;
+ h9 += h9;
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+
+ carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25;
+ carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25;
+
+ carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26;
+ carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26;
+
+ carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25;
+ carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25;
+
+ carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26;
+ carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26;
+
+ carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25;
+
+ carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26;
+
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_sub.c b/jni/ed25519/fe_sub.c
new file mode 100644
index 00000000..6e26b7df
--- /dev/null
+++ b/jni/ed25519/fe_sub.c
@@ -0,0 +1,57 @@
+#include "fe.h"
+
+/*
+h = f - g
+Can overlap h with f or g.
+
+Preconditions:
+ |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+ |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+
+Postconditions:
+ |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+*/
+
+void fe_sub(fe h,const fe f,const fe g)
+{
+ crypto_int32 f0 = f[0];
+ crypto_int32 f1 = f[1];
+ crypto_int32 f2 = f[2];
+ crypto_int32 f3 = f[3];
+ crypto_int32 f4 = f[4];
+ crypto_int32 f5 = f[5];
+ crypto_int32 f6 = f[6];
+ crypto_int32 f7 = f[7];
+ crypto_int32 f8 = f[8];
+ crypto_int32 f9 = f[9];
+ crypto_int32 g0 = g[0];
+ crypto_int32 g1 = g[1];
+ crypto_int32 g2 = g[2];
+ crypto_int32 g3 = g[3];
+ crypto_int32 g4 = g[4];
+ crypto_int32 g5 = g[5];
+ crypto_int32 g6 = g[6];
+ crypto_int32 g7 = g[7];
+ crypto_int32 g8 = g[8];
+ crypto_int32 g9 = g[9];
+ crypto_int32 h0 = f0 - g0;
+ crypto_int32 h1 = f1 - g1;
+ crypto_int32 h2 = f2 - g2;
+ crypto_int32 h3 = f3 - g3;
+ crypto_int32 h4 = f4 - g4;
+ crypto_int32 h5 = f5 - g5;
+ crypto_int32 h6 = f6 - g6;
+ crypto_int32 h7 = f7 - g7;
+ crypto_int32 h8 = f8 - g8;
+ crypto_int32 h9 = f9 - g9;
+ h[0] = h0;
+ h[1] = h1;
+ h[2] = h2;
+ h[3] = h3;
+ h[4] = h4;
+ h[5] = h5;
+ h[6] = h6;
+ h[7] = h7;
+ h[8] = h8;
+ h[9] = h9;
+}
diff --git a/jni/ed25519/fe_tobytes.c b/jni/ed25519/fe_tobytes.c
new file mode 100644
index 00000000..0a63baf9
--- /dev/null
+++ b/jni/ed25519/fe_tobytes.c
@@ -0,0 +1,119 @@
+#include "fe.h"
+
+/*
+Preconditions:
+ |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+
+Write p=2^255-19; q=floor(h/p).
+Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
+
+Proof:
+ Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
+ Also have |h-2^230 h9|<2^231 so |19 2^(-255)(h-2^230 h9)|<1/4.
+
+ Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
+ Then 0<y<1.
+
+ Write r=h-pq.
+ Have 0<=r<=p-1=2^255-20.
+ Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
+
+ Write x=r+19(2^-255)r+y.
+ Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
+
+ Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
+ so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
+*/
+
+void fe_tobytes(unsigned char *s,const fe h)
+{
+ crypto_int32 h0 = h[0];
+ crypto_int32 h1 = h[1];
+ crypto_int32 h2 = h[2];
+ crypto_int32 h3 = h[3];
+ crypto_int32 h4 = h[4];
+ crypto_int32 h5 = h[5];
+ crypto_int32 h6 = h[6];
+ crypto_int32 h7 = h[7];
+ crypto_int32 h8 = h[8];
+ crypto_int32 h9 = h[9];
+ crypto_int32 q;
+ crypto_int32 carry0;
+ crypto_int32 carry1;
+ crypto_int32 carry2;
+ crypto_int32 carry3;
+ crypto_int32 carry4;
+ crypto_int32 carry5;
+ crypto_int32 carry6;
+ crypto_int32 carry7;
+ crypto_int32 carry8;
+ crypto_int32 carry9;
+
+ q = (19 * h9 + (((crypto_int32) 1) << 24)) >> 25;
+ q = (h0 + q) >> 26;
+ q = (h1 + q) >> 25;
+ q = (h2 + q) >> 26;
+ q = (h3 + q) >> 25;
+ q = (h4 + q) >> 26;
+ q = (h5 + q) >> 25;
+ q = (h6 + q) >> 26;
+ q = (h7 + q) >> 25;
+ q = (h8 + q) >> 26;
+ q = (h9 + q) >> 25;
+
+ /* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */
+ h0 += 19 * q;
+ /* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */
+
+ carry0 = h0 >> 26; h1 += carry0; h0 -= carry0 << 26;
+ carry1 = h1 >> 25; h2 += carry1; h1 -= carry1 << 25;
+ carry2 = h2 >> 26; h3 += carry2; h2 -= carry2 << 26;
+ carry3 = h3 >> 25; h4 += carry3; h3 -= carry3 << 25;
+ carry4 = h4 >> 26; h5 += carry4; h4 -= carry4 << 26;
+ carry5 = h5 >> 25; h6 += carry5; h5 -= carry5 << 25;
+ carry6 = h6 >> 26; h7 += carry6; h6 -= carry6 << 26;
+ carry7 = h7 >> 25; h8 += carry7; h7 -= carry7 << 25;
+ carry8 = h8 >> 26; h9 += carry8; h8 -= carry8 << 26;
+ carry9 = h9 >> 25; h9 -= carry9 << 25;
+ /* h10 = carry9 */
+
+ /*
+ Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
+ Have h0+...+2^230 h9 between 0 and 2^255-1;
+ evidently 2^255 h10-2^255 q = 0.
+ Goal: Output h0+...+2^230 h9.
+ */
+
+ s[0] = h0 >> 0;
+ s[1] = h0 >> 8;
+ s[2] = h0 >> 16;
+ s[3] = (h0 >> 24) | (h1 << 2);
+ s[4] = h1 >> 6;
+ s[5] = h1 >> 14;
+ s[6] = (h1 >> 22) | (h2 << 3);
+ s[7] = h2 >> 5;
+ s[8] = h2 >> 13;
+ s[9] = (h2 >> 21) | (h3 << 5);
+ s[10] = h3 >> 3;
+ s[11] = h3 >> 11;
+ s[12] = (h3 >> 19) | (h4 << 6);
+ s[13] = h4 >> 2;
+ s[14] = h4 >> 10;
+ s[15] = h4 >> 18;
+ s[16] = h5 >> 0;
+ s[17] = h5 >> 8;
+ s[18] = h5 >> 16;
+ s[19] = (h5 >> 24) | (h6 << 1);
+ s[20] = h6 >> 7;
+ s[21] = h6 >> 15;
+ s[22] = (h6 >> 23) | (h7 << 3);
+ s[23] = h7 >> 5;
+ s[24] = h7 >> 13;
+ s[25] = (h7 >> 21) | (h8 << 4);
+ s[26] = h8 >> 4;
+ s[27] = h8 >> 12;
+ s[28] = (h8 >> 20) | (h9 << 6);
+ s[29] = h9 >> 2;
+ s[30] = h9 >> 10;
+ s[31] = h9 >> 18;
+}
diff --git a/jni/ed25519/ge.h b/jni/ed25519/ge.h
new file mode 100644
index 00000000..55e95f95
--- /dev/null
+++ b/jni/ed25519/ge.h
@@ -0,0 +1,95 @@
+#ifndef GE_H
+#define GE_H
+
+/*
+ge means group element.
+
+Here the group is the set of pairs (x,y) of field elements (see fe.h)
+satisfying -x^2 + y^2 = 1 + d x^2y^2
+where d = -121665/121666.
+
+Representations:
+ ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
+ ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+ ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+ ge_precomp (Duif): (y+x,y-x,2dxy)
+*/
+
+#include "fe.h"
+
+typedef struct {
+ fe X;
+ fe Y;
+ fe Z;
+} ge_p2;
+
+typedef struct {
+ fe X;
+ fe Y;
+ fe Z;
+ fe T;
+} ge_p3;
+
+typedef struct {
+ fe X;
+ fe Y;
+ fe Z;
+ fe T;
+} ge_p1p1;
+
+typedef struct {
+ fe yplusx;
+ fe yminusx;
+ fe xy2d;
+} ge_precomp;
+
+typedef struct {
+ fe YplusX;
+ fe YminusX;
+ fe Z;
+ fe T2d;
+} ge_cached;
+
+#define ge_frombytes_negate_vartime crypto_sign_ed25519_ref10_ge_frombytes_negate_vartime
+#define ge_tobytes crypto_sign_ed25519_ref10_ge_tobytes
+#define ge_p3_tobytes crypto_sign_ed25519_ref10_ge_p3_tobytes
+
+#define ge_p2_0 crypto_sign_ed25519_ref10_ge_p2_0
+#define ge_p3_0 crypto_sign_ed25519_ref10_ge_p3_0
+#define ge_precomp_0 crypto_sign_ed25519_ref10_ge_precomp_0
+#define ge_p3_to_p2 crypto_sign_ed25519_ref10_ge_p3_to_p2
+#define ge_p3_to_cached crypto_sign_ed25519_ref10_ge_p3_to_cached
+#define ge_p1p1_to_p2 crypto_sign_ed25519_ref10_ge_p1p1_to_p2
+#define ge_p1p1_to_p3 crypto_sign_ed25519_ref10_ge_p1p1_to_p3
+#define ge_p2_dbl crypto_sign_ed25519_ref10_ge_p2_dbl
+#define ge_p3_dbl crypto_sign_ed25519_ref10_ge_p3_dbl
+
+#define ge_madd crypto_sign_ed25519_ref10_ge_madd
+#define ge_msub crypto_sign_ed25519_ref10_ge_msub
+#define ge_add crypto_sign_ed25519_ref10_ge_add
+#define ge_sub crypto_sign_ed25519_ref10_ge_sub
+#define ge_scalarmult_base crypto_sign_ed25519_ref10_ge_scalarmult_base
+#define ge_double_scalarmult_vartime crypto_sign_ed25519_ref10_ge_double_scalarmult_vartime
+
+extern void ge_tobytes(unsigned char *,const ge_p2 *);
+extern void ge_p3_tobytes(unsigned char *,const ge_p3 *);
+extern int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *);
+
+extern void ge_p2_0(ge_p2 *);
+extern void ge_p3_0(ge_p3 *);
+extern void ge_precomp_0(ge_precomp *);
+extern void ge_p3_to_p2(ge_p2 *,const ge_p3 *);
+extern void ge_p3_to_cached(ge_cached *,const ge_p3 *);
+extern void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *);
+extern void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *);
+extern void ge_p2_dbl(ge_p1p1 *,const ge_p2 *);
+extern void ge_p3_dbl(ge_p1p1 *,const ge_p3 *);
+
+extern void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
+extern void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
+extern void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *);
+extern void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *);
+extern void ge_scalarmult_base(ge_p3 *,const unsigned char *);
+extern void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,const ge_p3 *,const unsigned char *);
+
+#endif
diff --git a/jni/ed25519/ge_add.c b/jni/ed25519/ge_add.c
new file mode 100644
index 00000000..da7ff5d2
--- /dev/null
+++ b/jni/ed25519/ge_add.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p + q
+*/
+
+void ge_add(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q)
+{
+ fe t0;
+#include "ge_add.h"
+}
diff --git a/jni/ed25519/ge_add.h b/jni/ed25519/ge_add.h
new file mode 100644
index 00000000..7481f8ff
--- /dev/null
+++ b/jni/ed25519/ge_add.h
@@ -0,0 +1,97 @@
+
+/* qhasm: enter ge_add */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe Z2 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ZZ */
+
+/* qhasm: fe YpX2 */
+
+/* qhasm: fe YmX2 */
+
+/* qhasm: fe T2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*YpX2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<YpX2=fe#15); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<YpX2=q->YplusX); */
+fe_mul(r->Z,r->X,q->YplusX);
+
+/* qhasm: B = YmX1*YmX2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<YmX2=fe#16); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<YmX2=q->YminusX); */
+fe_mul(r->Y,r->Y,q->YminusX);
+
+/* qhasm: C = T2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<T2d2=fe#18,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<T2d2=q->T2d,<T1=p->T); */
+fe_mul(r->T,q->T2d,p->T);
+
+/* qhasm: ZZ = Z1*Z2 */
+/* asm 1: fe_mul(>ZZ=fe#1,<Z1=fe#13,<Z2=fe#17); */
+/* asm 2: fe_mul(>ZZ=r->X,<Z1=p->Z,<Z2=q->Z); */
+fe_mul(r->X,p->Z,q->Z);
+
+/* qhasm: D = 2*ZZ */
+/* asm 1: fe_add(>D=fe#5,<ZZ=fe#1,<ZZ=fe#1); */
+/* asm 2: fe_add(>D=t0,<ZZ=r->X,<ZZ=r->X); */
+fe_add(t0,r->X,r->X);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D+C */
+/* asm 1: fe_add(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_add(r->Z,t0,r->T);
+
+/* qhasm: T3 = D-C */
+/* asm 1: fe_sub(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>T3=r->T,<D=t0,<C=r->T); */
+fe_sub(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/jni/ed25519/ge_double_scalarmult.c b/jni/ed25519/ge_double_scalarmult.c
new file mode 100644
index 00000000..f8bf4bf7
--- /dev/null
+++ b/jni/ed25519/ge_double_scalarmult.c
@@ -0,0 +1,96 @@
+#include "ge.h"
+
+static void slide(signed char *r,const unsigned char *a)
+{
+ int i;
+ int b;
+ int k;
+
+ for (i = 0;i < 256;++i)
+ r[i] = 1 & (a[i >> 3] >> (i & 7));
+
+ for (i = 0;i < 256;++i)
+ if (r[i]) {
+ for (b = 1;b <= 6 && i + b < 256;++b) {
+ if (r[i + b]) {
+ if (r[i] + (r[i + b] << b) <= 15) {
+ r[i] += r[i + b] << b; r[i + b] = 0;
+ } else if (r[i] - (r[i + b] << b) >= -15) {
+ r[i] -= r[i + b] << b;
+ for (k = i + b;k < 256;++k) {
+ if (!r[k]) {
+ r[k] = 1;
+ break;
+ }
+ r[k] = 0;
+ }
+ } else
+ break;
+ }
+ }
+ }
+
+}
+
+static ge_precomp Bi[8] = {
+#include "base2.h"
+} ;
+
+/*
+r = a * A + b * B
+where a = a[0]+256*a[1]+...+256^31 a[31].
+and b = b[0]+256*b[1]+...+256^31 b[31].
+B is the Ed25519 base point (x,4/5) with x positive.
+*/
+
+void ge_double_scalarmult_vartime(ge_p2 *r,const unsigned char *a,const ge_p3 *A,const unsigned char *b)
+{
+ signed char aslide[256];
+ signed char bslide[256];
+ ge_cached Ai[8]; /* A,3A,5A,7A,9A,11A,13A,15A */
+ ge_p1p1 t;
+ ge_p3 u;
+ ge_p3 A2;
+ int i;
+
+ slide(aslide,a);
+ slide(bslide,b);
+
+ ge_p3_to_cached(&Ai[0],A);
+ ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t);
+ ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u);
+ ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u);
+ ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u);
+ ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u);
+ ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u);
+ ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u);
+ ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u);
+
+ ge_p2_0(r);
+
+ for (i = 255;i >= 0;--i) {
+ if (aslide[i] || bslide[i]) break;
+ }
+
+ for (;i >= 0;--i) {
+ ge_p2_dbl(&t,r);
+
+ if (aslide[i] > 0) {
+ ge_p1p1_to_p3(&u,&t);
+ ge_add(&t,&u,&Ai[aslide[i]/2]);
+ } else if (aslide[i] < 0) {
+ ge_p1p1_to_p3(&u,&t);
+ ge_sub(&t,&u,&Ai[(-aslide[i])/2]);
+ }
+
+ if (bslide[i] > 0) {
+ ge_p1p1_to_p3(&u,&t);
+ ge_madd(&t,&u,&Bi[bslide[i]/2]);
+ } else if (bslide[i] < 0) {
+ ge_p1p1_to_p3(&u,&t);
+ ge_msub(&t,&u,&Bi[(-bslide[i])/2]);
+ }
+
+ ge_p1p1_to_p2(r,&t);
+ }
+}
diff --git a/jni/ed25519/ge_frombytes.c b/jni/ed25519/ge_frombytes.c
new file mode 100644
index 00000000..1a059ee9
--- /dev/null
+++ b/jni/ed25519/ge_frombytes.c
@@ -0,0 +1,50 @@
+#include "ge.h"
+
+static const fe d = {
+#include "d.h"
+} ;
+
+static const fe sqrtm1 = {
+#include "sqrtm1.h"
+} ;
+
+int ge_frombytes_negate_vartime(ge_p3 *h,const unsigned char *s)
+{
+ fe u;
+ fe v;
+ fe v3;
+ fe vxx;
+ fe check;
+
+ fe_frombytes(h->Y,s);
+ fe_1(h->Z);
+ fe_sq(u,h->Y);
+ fe_mul(v,u,d);
+ fe_sub(u,u,h->Z); /* u = y^2-1 */
+ fe_add(v,v,h->Z); /* v = dy^2+1 */
+
+ fe_sq(v3,v);
+ fe_mul(v3,v3,v); /* v3 = v^3 */
+ fe_sq(h->X,v3);
+ fe_mul(h->X,h->X,v);
+ fe_mul(h->X,h->X,u); /* x = uv^7 */
+
+ fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */
+ fe_mul(h->X,h->X,v3);
+ fe_mul(h->X,h->X,u); /* x = uv^3(uv^7)^((q-5)/8) */
+
+ fe_sq(vxx,h->X);
+ fe_mul(vxx,vxx,v);
+ fe_sub(check,vxx,u); /* vx^2-u */
+ if (fe_isnonzero(check)) {
+ fe_add(check,vxx,u); /* vx^2+u */
+ if (fe_isnonzero(check)) return -1;
+ fe_mul(h->X,h->X,sqrtm1);
+ }
+
+ if (fe_isnegative(h->X) == (s[31] >> 7))
+ fe_neg(h->X,h->X);
+
+ fe_mul(h->T,h->X,h->Y);
+ return 0;
+}
diff --git a/jni/ed25519/ge_madd.c b/jni/ed25519/ge_madd.c
new file mode 100644
index 00000000..62257177
--- /dev/null
+++ b/jni/ed25519/ge_madd.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p + q
+*/
+
+void ge_madd(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q)
+{
+ fe t0;
+#include "ge_madd.h"
+}
diff --git a/jni/ed25519/ge_madd.h b/jni/ed25519/ge_madd.h
new file mode 100644
index 00000000..ecae8495
--- /dev/null
+++ b/jni/ed25519/ge_madd.h
@@ -0,0 +1,88 @@
+
+/* qhasm: enter ge_madd */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ypx2 */
+
+/* qhasm: fe ymx2 */
+
+/* qhasm: fe xy2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*ypx2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<ypx2=fe#15); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<ypx2=q->yplusx); */
+fe_mul(r->Z,r->X,q->yplusx);
+
+/* qhasm: B = YmX1*ymx2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<ymx2=fe#16); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<ymx2=q->yminusx); */
+fe_mul(r->Y,r->Y,q->yminusx);
+
+/* qhasm: C = xy2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<xy2d2=fe#17,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<xy2d2=q->xy2d,<T1=p->T); */
+fe_mul(r->T,q->xy2d,p->T);
+
+/* qhasm: D = 2*Z1 */
+/* asm 1: fe_add(>D=fe#5,<Z1=fe#13,<Z1=fe#13); */
+/* asm 2: fe_add(>D=t0,<Z1=p->Z,<Z1=p->Z); */
+fe_add(t0,p->Z,p->Z);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D+C */
+/* asm 1: fe_add(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_add(r->Z,t0,r->T);
+
+/* qhasm: T3 = D-C */
+/* asm 1: fe_sub(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>T3=r->T,<D=t0,<C=r->T); */
+fe_sub(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/jni/ed25519/ge_msub.c b/jni/ed25519/ge_msub.c
new file mode 100644
index 00000000..741ecbf1
--- /dev/null
+++ b/jni/ed25519/ge_msub.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p - q
+*/
+
+void ge_msub(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q)
+{
+ fe t0;
+#include "ge_msub.h"
+}
diff --git a/jni/ed25519/ge_msub.h b/jni/ed25519/ge_msub.h
new file mode 100644
index 00000000..500f986b
--- /dev/null
+++ b/jni/ed25519/ge_msub.h
@@ -0,0 +1,88 @@
+
+/* qhasm: enter ge_msub */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ypx2 */
+
+/* qhasm: fe ymx2 */
+
+/* qhasm: fe xy2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*ymx2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<ymx2=fe#16); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<ymx2=q->yminusx); */
+fe_mul(r->Z,r->X,q->yminusx);
+
+/* qhasm: B = YmX1*ypx2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<ypx2=fe#15); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<ypx2=q->yplusx); */
+fe_mul(r->Y,r->Y,q->yplusx);
+
+/* qhasm: C = xy2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<xy2d2=fe#17,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<xy2d2=q->xy2d,<T1=p->T); */
+fe_mul(r->T,q->xy2d,p->T);
+
+/* qhasm: D = 2*Z1 */
+/* asm 1: fe_add(>D=fe#5,<Z1=fe#13,<Z1=fe#13); */
+/* asm 2: fe_add(>D=t0,<Z1=p->Z,<Z1=p->Z); */
+fe_add(t0,p->Z,p->Z);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D-C */
+/* asm 1: fe_sub(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_sub(r->Z,t0,r->T);
+
+/* qhasm: T3 = D+C */
+/* asm 1: fe_add(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>T3=r->T,<D=t0,<C=r->T); */
+fe_add(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/jni/ed25519/ge_p1p1_to_p2.c b/jni/ed25519/ge_p1p1_to_p2.c
new file mode 100644
index 00000000..9bb5013d
--- /dev/null
+++ b/jni/ed25519/ge_p1p1_to_p2.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p1p1_to_p2(ge_p2 *r,const ge_p1p1 *p)
+{
+ fe_mul(r->X,p->X,p->T);
+ fe_mul(r->Y,p->Y,p->Z);
+ fe_mul(r->Z,p->Z,p->T);
+}
diff --git a/jni/ed25519/ge_p1p1_to_p3.c b/jni/ed25519/ge_p1p1_to_p3.c
new file mode 100644
index 00000000..2f57b109
--- /dev/null
+++ b/jni/ed25519/ge_p1p1_to_p3.c
@@ -0,0 +1,13 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p1p1_to_p3(ge_p3 *r,const ge_p1p1 *p)
+{
+ fe_mul(r->X,p->X,p->T);
+ fe_mul(r->Y,p->Y,p->Z);
+ fe_mul(r->Z,p->Z,p->T);
+ fe_mul(r->T,p->X,p->Y);
+}
diff --git a/jni/ed25519/ge_p2_0.c b/jni/ed25519/ge_p2_0.c
new file mode 100644
index 00000000..6191d1e6
--- /dev/null
+++ b/jni/ed25519/ge_p2_0.c
@@ -0,0 +1,8 @@
+#include "ge.h"
+
+void ge_p2_0(ge_p2 *h)
+{
+ fe_0(h->X);
+ fe_1(h->Y);
+ fe_1(h->Z);
+}
diff --git a/jni/ed25519/ge_p2_dbl.c b/jni/ed25519/ge_p2_dbl.c
new file mode 100644
index 00000000..2e332b5c
--- /dev/null
+++ b/jni/ed25519/ge_p2_dbl.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = 2 * p
+*/
+
+void ge_p2_dbl(ge_p1p1 *r,const ge_p2 *p)
+{
+ fe t0;
+#include "ge_p2_dbl.h"
+}
diff --git a/jni/ed25519/ge_p2_dbl.h b/jni/ed25519/ge_p2_dbl.h
new file mode 100644
index 00000000..128efed9
--- /dev/null
+++ b/jni/ed25519/ge_p2_dbl.h
@@ -0,0 +1,73 @@
+
+/* qhasm: enter ge_p2_dbl */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe AA */
+
+/* qhasm: fe XX */
+
+/* qhasm: fe YY */
+
+/* qhasm: fe B */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: XX=X1^2 */
+/* asm 1: fe_sq(>XX=fe#1,<X1=fe#11); */
+/* asm 2: fe_sq(>XX=r->X,<X1=p->X); */
+fe_sq(r->X,p->X);
+
+/* qhasm: YY=Y1^2 */
+/* asm 1: fe_sq(>YY=fe#3,<Y1=fe#12); */
+/* asm 2: fe_sq(>YY=r->Z,<Y1=p->Y); */
+fe_sq(r->Z,p->Y);
+
+/* qhasm: B=2*Z1^2 */
+/* asm 1: fe_sq2(>B=fe#4,<Z1=fe#13); */
+/* asm 2: fe_sq2(>B=r->T,<Z1=p->Z); */
+fe_sq2(r->T,p->Z);
+
+/* qhasm: A=X1+Y1 */
+/* asm 1: fe_add(>A=fe#2,<X1=fe#11,<Y1=fe#12); */
+/* asm 2: fe_add(>A=r->Y,<X1=p->X,<Y1=p->Y); */
+fe_add(r->Y,p->X,p->Y);
+
+/* qhasm: AA=A^2 */
+/* asm 1: fe_sq(>AA=fe#5,<A=fe#2); */
+/* asm 2: fe_sq(>AA=t0,<A=r->Y); */
+fe_sq(t0,r->Y);
+
+/* qhasm: Y3=YY+XX */
+/* asm 1: fe_add(>Y3=fe#2,<YY=fe#3,<XX=fe#1); */
+/* asm 2: fe_add(>Y3=r->Y,<YY=r->Z,<XX=r->X); */
+fe_add(r->Y,r->Z,r->X);
+
+/* qhasm: Z3=YY-XX */
+/* asm 1: fe_sub(>Z3=fe#3,<YY=fe#3,<XX=fe#1); */
+/* asm 2: fe_sub(>Z3=r->Z,<YY=r->Z,<XX=r->X); */
+fe_sub(r->Z,r->Z,r->X);
+
+/* qhasm: X3=AA-Y3 */
+/* asm 1: fe_sub(>X3=fe#1,<AA=fe#5,<Y3=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<AA=t0,<Y3=r->Y); */
+fe_sub(r->X,t0,r->Y);
+
+/* qhasm: T3=B-Z3 */
+/* asm 1: fe_sub(>T3=fe#4,<B=fe#4,<Z3=fe#3); */
+/* asm 2: fe_sub(>T3=r->T,<B=r->T,<Z3=r->Z); */
+fe_sub(r->T,r->T,r->Z);
+
+/* qhasm: return */
diff --git a/jni/ed25519/ge_p3_0.c b/jni/ed25519/ge_p3_0.c
new file mode 100644
index 00000000..401b2935
--- /dev/null
+++ b/jni/ed25519/ge_p3_0.c
@@ -0,0 +1,9 @@
+#include "ge.h"
+
+void ge_p3_0(ge_p3 *h)
+{
+ fe_0(h->X);
+ fe_1(h->Y);
+ fe_1(h->Z);
+ fe_0(h->T);
+}
diff --git a/jni/ed25519/ge_p3_dbl.c b/jni/ed25519/ge_p3_dbl.c
new file mode 100644
index 00000000..0d8a0591
--- /dev/null
+++ b/jni/ed25519/ge_p3_dbl.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = 2 * p
+*/
+
+void ge_p3_dbl(ge_p1p1 *r,const ge_p3 *p)
+{
+ ge_p2 q;
+ ge_p3_to_p2(&q,p);
+ ge_p2_dbl(r,&q);
+}
diff --git a/jni/ed25519/ge_p3_to_cached.c b/jni/ed25519/ge_p3_to_cached.c
new file mode 100644
index 00000000..bde64228
--- /dev/null
+++ b/jni/ed25519/ge_p3_to_cached.c
@@ -0,0 +1,17 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+static const fe d2 = {
+#include "d2.h"
+} ;
+
+extern void ge_p3_to_cached(ge_cached *r,const ge_p3 *p)
+{
+ fe_add(r->YplusX,p->Y,p->X);
+ fe_sub(r->YminusX,p->Y,p->X);
+ fe_copy(r->Z,p->Z);
+ fe_mul(r->T2d,p->T,d2);
+}
diff --git a/jni/ed25519/ge_p3_to_p2.c b/jni/ed25519/ge_p3_to_p2.c
new file mode 100644
index 00000000..e532a9e4
--- /dev/null
+++ b/jni/ed25519/ge_p3_to_p2.c
@@ -0,0 +1,12 @@
+#include "ge.h"
+
+/*
+r = p
+*/
+
+extern void ge_p3_to_p2(ge_p2 *r,const ge_p3 *p)
+{
+ fe_copy(r->X,p->X);
+ fe_copy(r->Y,p->Y);
+ fe_copy(r->Z,p->Z);
+}
diff --git a/jni/ed25519/ge_p3_tobytes.c b/jni/ed25519/ge_p3_tobytes.c
new file mode 100644
index 00000000..21cb2fc6
--- /dev/null
+++ b/jni/ed25519/ge_p3_tobytes.c
@@ -0,0 +1,14 @@
+#include "ge.h"
+
+void ge_p3_tobytes(unsigned char *s,const ge_p3 *h)
+{
+ fe recip;
+ fe x;
+ fe y;
+
+ fe_invert(recip,h->Z);
+ fe_mul(x,h->X,recip);
+ fe_mul(y,h->Y,recip);
+ fe_tobytes(s,y);
+ s[31] ^= fe_isnegative(x) << 7;
+}
diff --git a/jni/ed25519/ge_precomp_0.c b/jni/ed25519/ge_precomp_0.c
new file mode 100644
index 00000000..2e218861
--- /dev/null
+++ b/jni/ed25519/ge_precomp_0.c
@@ -0,0 +1,8 @@
+#include "ge.h"
+
+void ge_precomp_0(ge_precomp *h)
+{
+ fe_1(h->yplusx);
+ fe_1(h->yminusx);
+ fe_0(h->xy2d);
+}
diff --git a/jni/ed25519/ge_scalarmult_base.c b/jni/ed25519/ge_scalarmult_base.c
new file mode 100644
index 00000000..421e4fa0
--- /dev/null
+++ b/jni/ed25519/ge_scalarmult_base.c
@@ -0,0 +1,105 @@
+#include "ge.h"
+#include "crypto_uint32.h"
+
+static unsigned char equal(signed char b,signed char c)
+{
+ unsigned char ub = b;
+ unsigned char uc = c;
+ unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */
+ crypto_uint32 y = x; /* 0: yes; 1..255: no */
+ y -= 1; /* 4294967295: yes; 0..254: no */
+ y >>= 31; /* 1: yes; 0: no */
+ return y;
+}
+
+static unsigned char negative(signed char b)
+{
+ unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
+ x >>= 63; /* 1: yes; 0: no */
+ return x;
+}
+
+static void cmov(ge_precomp *t,ge_precomp *u,unsigned char b)
+{
+ fe_cmov(t->yplusx,u->yplusx,b);
+ fe_cmov(t->yminusx,u->yminusx,b);
+ fe_cmov(t->xy2d,u->xy2d,b);
+}
+
+/* base[i][j] = (j+1)*256^i*B */
+static ge_precomp base[32][8] = {
+#include "base.h"
+} ;
+
+static void select(ge_precomp *t,int pos,signed char b)
+{
+ ge_precomp minust;
+ unsigned char bnegative = negative(b);
+ unsigned char babs = b - (((-bnegative) & b) << 1);
+
+ ge_precomp_0(t);
+ cmov(t,&base[pos][0],equal(babs,1));
+ cmov(t,&base[pos][1],equal(babs,2));
+ cmov(t,&base[pos][2],equal(babs,3));
+ cmov(t,&base[pos][3],equal(babs,4));
+ cmov(t,&base[pos][4],equal(babs,5));
+ cmov(t,&base[pos][5],equal(babs,6));
+ cmov(t,&base[pos][6],equal(babs,7));
+ cmov(t,&base[pos][7],equal(babs,8));
+ fe_copy(minust.yplusx,t->yminusx);
+ fe_copy(minust.yminusx,t->yplusx);
+ fe_neg(minust.xy2d,t->xy2d);
+ cmov(t,&minust,bnegative);
+}
+
+/*
+h = a * B
+where a = a[0]+256*a[1]+...+256^31 a[31]
+B is the Ed25519 base point (x,4/5) with x positive.
+
+Preconditions:
+ a[31] <= 127
+*/
+
+void ge_scalarmult_base(ge_p3 *h,const unsigned char *a)
+{
+ signed char e[64];
+ signed char carry;
+ ge_p1p1 r;
+ ge_p2 s;
+ ge_precomp t;
+ int i;
+
+ for (i = 0;i < 32;++i) {
+ e[2 * i + 0] = (a[i] >> 0) & 15;
+ e[2 * i + 1] = (a[i] >> 4) & 15;
+ }
+ /* each e[i] is between 0 and 15 */
+ /* e[63] is between 0 and 7 */
+
+ carry = 0;
+ for (i = 0;i < 63;++i) {
+ e[i] += carry;
+ carry = e[i] + 8;
+ carry >>= 4;
+ e[i] -= carry << 4;
+ }
+ e[63] += carry;
+ /* each e[i] is between -8 and 8 */
+
+ ge_p3_0(h);
+ for (i = 1;i < 64;i += 2) {
+ select(&t,i / 2,e[i]);
+ ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r);
+ }
+
+ ge_p3_dbl(&r,h); ge_p1p1_to_p2(&s,&r);
+ ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+ ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+ ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r);
+
+ for (i = 0;i < 64;i += 2) {
+ select(&t,i / 2,e[i]);
+ ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r);
+ }
+}
diff --git a/jni/ed25519/ge_sub.c b/jni/ed25519/ge_sub.c
new file mode 100644
index 00000000..69f3d540
--- /dev/null
+++ b/jni/ed25519/ge_sub.c
@@ -0,0 +1,11 @@
+#include "ge.h"
+
+/*
+r = p - q
+*/
+
+void ge_sub(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q)
+{
+ fe t0;
+#include "ge_sub.h"
+}
diff --git a/jni/ed25519/ge_sub.h b/jni/ed25519/ge_sub.h
new file mode 100644
index 00000000..b4ef1f5d
--- /dev/null
+++ b/jni/ed25519/ge_sub.h
@@ -0,0 +1,97 @@
+
+/* qhasm: enter ge_sub */
+
+/* qhasm: fe X1 */
+
+/* qhasm: fe Y1 */
+
+/* qhasm: fe Z1 */
+
+/* qhasm: fe Z2 */
+
+/* qhasm: fe T1 */
+
+/* qhasm: fe ZZ */
+
+/* qhasm: fe YpX2 */
+
+/* qhasm: fe YmX2 */
+
+/* qhasm: fe T2d2 */
+
+/* qhasm: fe X3 */
+
+/* qhasm: fe Y3 */
+
+/* qhasm: fe Z3 */
+
+/* qhasm: fe T3 */
+
+/* qhasm: fe YpX1 */
+
+/* qhasm: fe YmX1 */
+
+/* qhasm: fe A */
+
+/* qhasm: fe B */
+
+/* qhasm: fe C */
+
+/* qhasm: fe D */
+
+/* qhasm: YpX1 = Y1+X1 */
+/* asm 1: fe_add(>YpX1=fe#1,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_add(>YpX1=r->X,<Y1=p->Y,<X1=p->X); */
+fe_add(r->X,p->Y,p->X);
+
+/* qhasm: YmX1 = Y1-X1 */
+/* asm 1: fe_sub(>YmX1=fe#2,<Y1=fe#12,<X1=fe#11); */
+/* asm 2: fe_sub(>YmX1=r->Y,<Y1=p->Y,<X1=p->X); */
+fe_sub(r->Y,p->Y,p->X);
+
+/* qhasm: A = YpX1*YmX2 */
+/* asm 1: fe_mul(>A=fe#3,<YpX1=fe#1,<YmX2=fe#16); */
+/* asm 2: fe_mul(>A=r->Z,<YpX1=r->X,<YmX2=q->YminusX); */
+fe_mul(r->Z,r->X,q->YminusX);
+
+/* qhasm: B = YmX1*YpX2 */
+/* asm 1: fe_mul(>B=fe#2,<YmX1=fe#2,<YpX2=fe#15); */
+/* asm 2: fe_mul(>B=r->Y,<YmX1=r->Y,<YpX2=q->YplusX); */
+fe_mul(r->Y,r->Y,q->YplusX);
+
+/* qhasm: C = T2d2*T1 */
+/* asm 1: fe_mul(>C=fe#4,<T2d2=fe#18,<T1=fe#14); */
+/* asm 2: fe_mul(>C=r->T,<T2d2=q->T2d,<T1=p->T); */
+fe_mul(r->T,q->T2d,p->T);
+
+/* qhasm: ZZ = Z1*Z2 */
+/* asm 1: fe_mul(>ZZ=fe#1,<Z1=fe#13,<Z2=fe#17); */
+/* asm 2: fe_mul(>ZZ=r->X,<Z1=p->Z,<Z2=q->Z); */
+fe_mul(r->X,p->Z,q->Z);
+
+/* qhasm: D = 2*ZZ */
+/* asm 1: fe_add(>D=fe#5,<ZZ=fe#1,<ZZ=fe#1); */
+/* asm 2: fe_add(>D=t0,<ZZ=r->X,<ZZ=r->X); */
+fe_add(t0,r->X,r->X);
+
+/* qhasm: X3 = A-B */
+/* asm 1: fe_sub(>X3=fe#1,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_sub(>X3=r->X,<A=r->Z,<B=r->Y); */
+fe_sub(r->X,r->Z,r->Y);
+
+/* qhasm: Y3 = A+B */
+/* asm 1: fe_add(>Y3=fe#2,<A=fe#3,<B=fe#2); */
+/* asm 2: fe_add(>Y3=r->Y,<A=r->Z,<B=r->Y); */
+fe_add(r->Y,r->Z,r->Y);
+
+/* qhasm: Z3 = D-C */
+/* asm 1: fe_sub(>Z3=fe#3,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_sub(>Z3=r->Z,<D=t0,<C=r->T); */
+fe_sub(r->Z,t0,r->T);
+
+/* qhasm: T3 = D+C */
+/* asm 1: fe_add(>T3=fe#4,<D=fe#5,<C=fe#4); */
+/* asm 2: fe_add(>T3=r->T,<D=t0,<C=r->T); */
+fe_add(r->T,t0,r->T);
+
+/* qhasm: return */
diff --git a/jni/ed25519/ge_tobytes.c b/jni/ed25519/ge_tobytes.c
new file mode 100644
index 00000000..31b3d33e
--- /dev/null
+++ b/jni/ed25519/ge_tobytes.c
@@ -0,0 +1,14 @@
+#include "ge.h"
+
+void ge_tobytes(unsigned char *s,const ge_p2 *h)
+{
+ fe recip;
+ fe x;
+ fe y;
+
+ fe_invert(recip,h->Z);
+ fe_mul(x,h->X,recip);
+ fe_mul(y,h->Y,recip);
+ fe_tobytes(s,y);
+ s[31] ^= fe_isnegative(x) << 7;
+}
diff --git a/jni/ed25519/main/main.c b/jni/ed25519/main/main.c
new file mode 100644
index 00000000..5fbe3995
--- /dev/null
+++ b/jni/ed25519/main/main.c
@@ -0,0 +1,106 @@
+#include <stdio.h>
+#include <string.h>
+#include "crypto_hash_sha512.h"
+#include "curve_sigs.h"
+
+#define MSG_LEN 200
+
+int main(int argc, char* argv[])
+{
+ unsigned char privkey[32];
+ unsigned char pubkey[32];
+ unsigned char signature[64];
+ unsigned char msg[MSG_LEN];
+ unsigned char random[64];
+
+ /* Initialize pubkey, privkey, msg */
+ memset(msg, 0, MSG_LEN);
+ memset(privkey, 0, 32);
+ memset(pubkey, 0, 32);
+ privkey[0] &= 248;
+ privkey[31] &= 63;
+ privkey[31] |= 64;
+
+ privkey[8] = 189; /* just so there's some bits set */
+
+
+ /* SHA512 test */
+ unsigned char sha512_input[112] = "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";
+ unsigned char sha512_correct_output[64] =
+{
+0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
+0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
+0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
+0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
+0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
+0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
+0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
+0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09
+};
+ unsigned char sha512_actual_output[64];
+
+ crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
+ if (memcmp(sha512_actual_output, sha512_correct_output, 64) != 0)
+ printf("SHA512 bad #1\n");
+ else
+ printf("SHA512 good #1\n");
+
+ sha512_input[111] ^= 1;
+
+ crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
+ if (memcmp(sha512_actual_output, sha512_correct_output, 64) != 0)
+ printf("SHA512 good #2\n");
+ else
+ printf("SHA512 bad #2\n");
+
+ /* Signature test */
+ curve25519_keygen(pubkey, privkey);
+
+ curve25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+ if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
+ printf("Signature good #1\n");
+ else
+ printf("Signature bad #1\n");
+
+ signature[0] ^= 1;
+
+ if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
+ printf("Signature bad #2\n");
+ else
+ printf("Signature good #2\n");
+
+
+ printf("Random testing...\n");
+ for (int count = 0; count < 10000; count++) {
+ unsigned char b[64];
+ crypto_hash_sha512(b, privkey, 32);
+ memmove(privkey, b, 32);
+ crypto_hash_sha512(b, privkey, 32);
+ memmove(random, b, 64);
+
+ privkey[0] &= 248;
+ privkey[31] &= 63;
+ privkey[31] |= 64;
+
+ curve25519_keygen(pubkey, privkey);
+
+ curve25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+ if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0) {
+ printf("failure #1 %d\n", count);
+ return -1;
+ }
+
+ if (b[63] & 1)
+ signature[count % 64] ^= 1;
+ else
+ msg[count % MSG_LEN] ^= 1;
+ if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0) {
+ printf("failure #2 %d\n", count);
+ return -1;
+ }
+ }
+ printf("OK\n");
+ return 1;
+}
diff --git a/jni/ed25519/nacl_includes/crypto_int32.h b/jni/ed25519/nacl_includes/crypto_int32.h
new file mode 100644
index 00000000..cae135e6
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_int32.h
@@ -0,0 +1,6 @@
+#ifndef crypto_int32_h
+#define crypto_int32_h
+
+typedef int crypto_int32;
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_int64.h b/jni/ed25519/nacl_includes/crypto_int64.h
new file mode 100644
index 00000000..fc92417b
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_int64.h
@@ -0,0 +1,6 @@
+#ifndef crypto_int64_h
+#define crypto_int64_h
+
+typedef long long crypto_int64;
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_sign.h b/jni/ed25519/nacl_includes/crypto_sign.h
new file mode 100644
index 00000000..8472603e
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_sign.h
@@ -0,0 +1,16 @@
+#ifndef crypto_sign_H
+#define crypto_sign_H
+
+#include "crypto_sign_edwards25519sha512batch.h"
+
+#define crypto_sign crypto_sign_edwards25519sha512batch
+#define crypto_sign_open crypto_sign_edwards25519sha512batch_open
+#define crypto_sign_keypair crypto_sign_edwards25519sha512batch_keypair
+#define crypto_sign_BYTES crypto_sign_edwards25519sha512batch_BYTES
+#define crypto_sign_PUBLICKEYBYTES crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES
+#define crypto_sign_SECRETKEYBYTES crypto_sign_edwards25519sha512batch_SECRETKEYBYTES
+#define crypto_sign_PRIMITIVE "edwards25519sha512batch"
+#define crypto_sign_IMPLEMENTATION crypto_sign_edwards25519sha512batch_IMPLEMENTATION
+#define crypto_sign_VERSION crypto_sign_edwards25519sha512batch_VERSION
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h b/jni/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h
new file mode 100644
index 00000000..62fae611
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h
@@ -0,0 +1,33 @@
+#ifndef crypto_sign_edwards25519sha512batch_H
+#define crypto_sign_edwards25519sha512batch_H
+
+#define crypto_sign_edwards25519sha512batch_ref10_SECRETKEYBYTES 64
+#define crypto_sign_edwards25519sha512batch_ref10_PUBLICKEYBYTES 32
+#define crypto_sign_edwards25519sha512batch_ref10_BYTES 64
+#ifdef __cplusplus
+#include <string>
+extern std::string crypto_sign_edwards25519sha512batch_ref10(const std::string &,const std::string &);
+extern std::string crypto_sign_edwards25519sha512batch_ref10_open(const std::string &,const std::string &);
+extern std::string crypto_sign_edwards25519sha512batch_ref10_keypair(std::string *);
+extern "C" {
+#endif
+extern int crypto_sign_edwards25519sha512batch_ref10(unsigned char *,unsigned long long *,const unsigned char *,unsigned long long,const unsigned char *);
+extern int crypto_sign_edwards25519sha512batch_ref10_open(unsigned char *,unsigned long long *,const unsigned char *,unsigned long long,const unsigned char *);
+extern int crypto_sign_edwards25519sha512batch_ref10_keypair(unsigned char *,unsigned char *);
+#ifdef __cplusplus
+}
+#endif
+
+#define crypto_sign_edwards25519sha512batch crypto_sign_edwards25519sha512batch_ref10
+#define crypto_sign_edwards25519sha512batch_open crypto_sign_edwards25519sha512batch_ref10_open
+#define crypto_sign_edwards25519sha512batch_keypair crypto_sign_edwards25519sha512batch_ref10_keypair
+#define crypto_sign_edwards25519sha512batch_BYTES crypto_sign_edwards25519sha512batch_ref10_BYTES
+#define crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES crypto_sign_edwards25519sha512batch_ref10_PUBLICKEYBYTES
+#define crypto_sign_edwards25519sha512batch_SECRETKEYBYTES crypto_sign_edwards25519sha512batch_ref10_SECRETKEYBYTES
+#define crypto_sign_edwards25519sha512batch_IMPLEMENTATION "crypto_sign/edwards25519sha512batch/ref10"
+#ifndef crypto_sign_edwards25519sha512batch_ref10_VERSION
+#define crypto_sign_edwards25519sha512batch_ref10_VERSION "-"
+#endif
+#define crypto_sign_edwards25519sha512batch_VERSION crypto_sign_edwards25519sha512batch_ref10_VERSION
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_uint32.h b/jni/ed25519/nacl_includes/crypto_uint32.h
new file mode 100644
index 00000000..21020d7b
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_uint32.h
@@ -0,0 +1,6 @@
+#ifndef crypto_uint32_h
+#define crypto_uint32_h
+
+typedef unsigned int crypto_uint32;
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_uint64.h b/jni/ed25519/nacl_includes/crypto_uint64.h
new file mode 100644
index 00000000..5aa00703
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_uint64.h
@@ -0,0 +1,6 @@
+#ifndef crypto_uint64_h
+#define crypto_uint64_h
+
+typedef unsigned long long crypto_uint64;
+
+#endif
diff --git a/jni/ed25519/nacl_includes/crypto_verify_32.h b/jni/ed25519/nacl_includes/crypto_verify_32.h
new file mode 100644
index 00000000..978d8452
--- /dev/null
+++ b/jni/ed25519/nacl_includes/crypto_verify_32.h
@@ -0,0 +1,22 @@
+#ifndef crypto_verify_32_H
+#define crypto_verify_32_H
+
+#define crypto_verify_32_ref_BYTES 32
+#ifdef __cplusplus
+#include <string>
+extern "C" {
+#endif
+extern int crypto_verify_32_ref(const unsigned char *,const unsigned char *);
+#ifdef __cplusplus
+}
+#endif
+
+#define crypto_verify_32 crypto_verify_32_ref
+#define crypto_verify_32_BYTES crypto_verify_32_ref_BYTES
+#define crypto_verify_32_IMPLEMENTATION "crypto_verify/32/ref"
+#ifndef crypto_verify_32_ref_VERSION
+#define crypto_verify_32_ref_VERSION "-"
+#endif
+#define crypto_verify_32_VERSION crypto_verify_32_ref_VERSION
+
+#endif
diff --git a/jni/ed25519/nacl_sha512/blocks.c b/jni/ed25519/nacl_sha512/blocks.c
new file mode 100644
index 00000000..1c5f23d5
--- /dev/null
+++ b/jni/ed25519/nacl_sha512/blocks.c
@@ -0,0 +1,238 @@
+#include <stdint.h>
+typedef uint64_t uint64;
+
+static uint64 load_bigendian(const unsigned char *x)
+{
+ return
+ (uint64) (x[7]) \
+ | (((uint64) (x[6])) << 8) \
+ | (((uint64) (x[5])) << 16) \
+ | (((uint64) (x[4])) << 24) \
+ | (((uint64) (x[3])) << 32) \
+ | (((uint64) (x[2])) << 40) \
+ | (((uint64) (x[1])) << 48) \
+ | (((uint64) (x[0])) << 56)
+ ;
+}
+
+static void store_bigendian(unsigned char *x,uint64 u)
+{
+ x[7] = u; u >>= 8;
+ x[6] = u; u >>= 8;
+ x[5] = u; u >>= 8;
+ x[4] = u; u >>= 8;
+ x[3] = u; u >>= 8;
+ x[2] = u; u >>= 8;
+ x[1] = u; u >>= 8;
+ x[0] = u;
+}
+
+#define SHR(x,c) ((x) >> (c))
+#define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c))))
+
+#define Ch(x,y,z) ((x & y) ^ (~x & z))
+#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
+#define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
+#define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
+#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7))
+#define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6))
+
+#define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0;
+
+#define EXPAND \
+ M(w0 ,w14,w9 ,w1 ) \
+ M(w1 ,w15,w10,w2 ) \
+ M(w2 ,w0 ,w11,w3 ) \
+ M(w3 ,w1 ,w12,w4 ) \
+ M(w4 ,w2 ,w13,w5 ) \
+ M(w5 ,w3 ,w14,w6 ) \
+ M(w6 ,w4 ,w15,w7 ) \
+ M(w7 ,w5 ,w0 ,w8 ) \
+ M(w8 ,w6 ,w1 ,w9 ) \
+ M(w9 ,w7 ,w2 ,w10) \
+ M(w10,w8 ,w3 ,w11) \
+ M(w11,w9 ,w4 ,w12) \
+ M(w12,w10,w5 ,w13) \
+ M(w13,w11,w6 ,w14) \
+ M(w14,w12,w7 ,w15) \
+ M(w15,w13,w8 ,w0 )
+
+#define F(w,k) \
+ T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \
+ T2 = Sigma0(a) + Maj(a,b,c); \
+ h = g; \
+ g = f; \
+ f = e; \
+ e = d + T1; \
+ d = c; \
+ c = b; \
+ b = a; \
+ a = T1 + T2;
+
+int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
+{
+ uint64 state[8];
+ uint64 a;
+ uint64 b;
+ uint64 c;
+ uint64 d;
+ uint64 e;
+ uint64 f;
+ uint64 g;
+ uint64 h;
+ uint64 T1;
+ uint64 T2;
+
+ a = load_bigendian(statebytes + 0); state[0] = a;
+ b = load_bigendian(statebytes + 8); state[1] = b;
+ c = load_bigendian(statebytes + 16); state[2] = c;
+ d = load_bigendian(statebytes + 24); state[3] = d;
+ e = load_bigendian(statebytes + 32); state[4] = e;
+ f = load_bigendian(statebytes + 40); state[5] = f;
+ g = load_bigendian(statebytes + 48); state[6] = g;
+ h = load_bigendian(statebytes + 56); state[7] = h;
+
+ while (inlen >= 128) {
+ uint64 w0 = load_bigendian(in + 0);
+ uint64 w1 = load_bigendian(in + 8);
+ uint64 w2 = load_bigendian(in + 16);
+ uint64 w3 = load_bigendian(in + 24);
+ uint64 w4 = load_bigendian(in + 32);
+ uint64 w5 = load_bigendian(in + 40);
+ uint64 w6 = load_bigendian(in + 48);
+ uint64 w7 = load_bigendian(in + 56);
+ uint64 w8 = load_bigendian(in + 64);
+ uint64 w9 = load_bigendian(in + 72);
+ uint64 w10 = load_bigendian(in + 80);
+ uint64 w11 = load_bigendian(in + 88);
+ uint64 w12 = load_bigendian(in + 96);
+ uint64 w13 = load_bigendian(in + 104);
+ uint64 w14 = load_bigendian(in + 112);
+ uint64 w15 = load_bigendian(in + 120);
+
+ F(w0 ,0x428a2f98d728ae22ULL)
+ F(w1 ,0x7137449123ef65cdULL)
+ F(w2 ,0xb5c0fbcfec4d3b2fULL)
+ F(w3 ,0xe9b5dba58189dbbcULL)
+ F(w4 ,0x3956c25bf348b538ULL)
+ F(w5 ,0x59f111f1b605d019ULL)
+ F(w6 ,0x923f82a4af194f9bULL)
+ F(w7 ,0xab1c5ed5da6d8118ULL)
+ F(w8 ,0xd807aa98a3030242ULL)
+ F(w9 ,0x12835b0145706fbeULL)
+ F(w10,0x243185be4ee4b28cULL)
+ F(w11,0x550c7dc3d5ffb4e2ULL)
+ F(w12,0x72be5d74f27b896fULL)
+ F(w13,0x80deb1fe3b1696b1ULL)
+ F(w14,0x9bdc06a725c71235ULL)
+ F(w15,0xc19bf174cf692694ULL)
+
+ EXPAND
+
+ F(w0 ,0xe49b69c19ef14ad2ULL)
+ F(w1 ,0xefbe4786384f25e3ULL)
+ F(w2 ,0x0fc19dc68b8cd5b5ULL)
+ F(w3 ,0x240ca1cc77ac9c65ULL)
+ F(w4 ,0x2de92c6f592b0275ULL)
+ F(w5 ,0x4a7484aa6ea6e483ULL)
+ F(w6 ,0x5cb0a9dcbd41fbd4ULL)
+ F(w7 ,0x76f988da831153b5ULL)
+ F(w8 ,0x983e5152ee66dfabULL)
+ F(w9 ,0xa831c66d2db43210ULL)
+ F(w10,0xb00327c898fb213fULL)
+ F(w11,0xbf597fc7beef0ee4ULL)
+ F(w12,0xc6e00bf33da88fc2ULL)
+ F(w13,0xd5a79147930aa725ULL)
+ F(w14,0x06ca6351e003826fULL)
+ F(w15,0x142929670a0e6e70ULL)
+
+ EXPAND
+
+ F(w0 ,0x27b70a8546d22ffcULL)
+ F(w1 ,0x2e1b21385c26c926ULL)
+ F(w2 ,0x4d2c6dfc5ac42aedULL)
+ F(w3 ,0x53380d139d95b3dfULL)
+ F(w4 ,0x650a73548baf63deULL)
+ F(w5 ,0x766a0abb3c77b2a8ULL)
+ F(w6 ,0x81c2c92e47edaee6ULL)
+ F(w7 ,0x92722c851482353bULL)
+ F(w8 ,0xa2bfe8a14cf10364ULL)
+ F(w9 ,0xa81a664bbc423001ULL)
+ F(w10,0xc24b8b70d0f89791ULL)
+ F(w11,0xc76c51a30654be30ULL)
+ F(w12,0xd192e819d6ef5218ULL)
+ F(w13,0xd69906245565a910ULL)
+ F(w14,0xf40e35855771202aULL)
+ F(w15,0x106aa07032bbd1b8ULL)
+
+ EXPAND
+
+ F(w0 ,0x19a4c116b8d2d0c8ULL)
+ F(w1 ,0x1e376c085141ab53ULL)
+ F(w2 ,0x2748774cdf8eeb99ULL)
+ F(w3 ,0x34b0bcb5e19b48a8ULL)
+ F(w4 ,0x391c0cb3c5c95a63ULL)
+ F(w5 ,0x4ed8aa4ae3418acbULL)
+ F(w6 ,0x5b9cca4f7763e373ULL)
+ F(w7 ,0x682e6ff3d6b2b8a3ULL)
+ F(w8 ,0x748f82ee5defb2fcULL)
+ F(w9 ,0x78a5636f43172f60ULL)
+ F(w10,0x84c87814a1f0ab72ULL)
+ F(w11,0x8cc702081a6439ecULL)
+ F(w12,0x90befffa23631e28ULL)
+ F(w13,0xa4506cebde82bde9ULL)
+ F(w14,0xbef9a3f7b2c67915ULL)
+ F(w15,0xc67178f2e372532bULL)
+
+ EXPAND
+
+ F(w0 ,0xca273eceea26619cULL)
+ F(w1 ,0xd186b8c721c0c207ULL)
+ F(w2 ,0xeada7dd6cde0eb1eULL)
+ F(w3 ,0xf57d4f7fee6ed178ULL)
+ F(w4 ,0x06f067aa72176fbaULL)
+ F(w5 ,0x0a637dc5a2c898a6ULL)
+ F(w6 ,0x113f9804bef90daeULL)
+ F(w7 ,0x1b710b35131c471bULL)
+ F(w8 ,0x28db77f523047d84ULL)
+ F(w9 ,0x32caab7b40c72493ULL)
+ F(w10,0x3c9ebe0a15c9bebcULL)
+ F(w11,0x431d67c49c100d4cULL)
+ F(w12,0x4cc5d4becb3e42b6ULL)
+ F(w13,0x597f299cfc657e2aULL)
+ F(w14,0x5fcb6fab3ad6faecULL)
+ F(w15,0x6c44198c4a475817ULL)
+
+ a += state[0];
+ b += state[1];
+ c += state[2];
+ d += state[3];
+ e += state[4];
+ f += state[5];
+ g += state[6];
+ h += state[7];
+
+ state[0] = a;
+ state[1] = b;
+ state[2] = c;
+ state[3] = d;
+ state[4] = e;
+ state[5] = f;
+ state[6] = g;
+ state[7] = h;
+
+ in += 128;
+ inlen -= 128;
+ }
+
+ store_bigendian(statebytes + 0,state[0]);
+ store_bigendian(statebytes + 8,state[1]);
+ store_bigendian(statebytes + 16,state[2]);
+ store_bigendian(statebytes + 24,state[3]);
+ store_bigendian(statebytes + 32,state[4]);
+ store_bigendian(statebytes + 40,state[5]);
+ store_bigendian(statebytes + 48,state[6]);
+ store_bigendian(statebytes + 56,state[7]);
+
+ return 0;
+}
diff --git a/jni/ed25519/nacl_sha512/hash.c b/jni/ed25519/nacl_sha512/hash.c
new file mode 100644
index 00000000..8934cc18
--- /dev/null
+++ b/jni/ed25519/nacl_sha512/hash.c
@@ -0,0 +1,71 @@
+/*
+20080913
+D. J. Bernstein
+Public domain.
+*/
+
+#include <stdint.h>
+typedef uint64_t uint64;
+
+extern int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen);
+
+#define blocks crypto_hashblocks_sha512
+
+static const unsigned char iv[64] = {
+ 0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08,
+ 0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b,
+ 0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b,
+ 0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1,
+ 0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1,
+ 0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f,
+ 0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b,
+ 0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79
+} ;
+
+int crypto_hash_sha512(unsigned char *out,const unsigned char *in,unsigned long long inlen)
+{
+ unsigned char h[64];
+ unsigned char padded[256];
+ int i;
+ unsigned long long bytes = inlen;
+
+ for (i = 0;i < 64;++i) h[i] = iv[i];
+
+ blocks(h,in,inlen);
+ in += inlen;
+ inlen &= 127;
+ in -= inlen;
+
+ for (i = 0;i < inlen;++i) padded[i] = in[i];
+ padded[inlen] = 0x80;
+
+ if (inlen < 112) {
+ for (i = inlen + 1;i < 119;++i) padded[i] = 0;
+ padded[119] = bytes >> 61;
+ padded[120] = bytes >> 53;
+ padded[121] = bytes >> 45;
+ padded[122] = bytes >> 37;
+ padded[123] = bytes >> 29;
+ padded[124] = bytes >> 21;
+ padded[125] = bytes >> 13;
+ padded[126] = bytes >> 5;
+ padded[127] = bytes << 3;
+ blocks(h,padded,128);
+ } else {
+ for (i = inlen + 1;i < 247;++i) padded[i] = 0;
+ padded[247] = bytes >> 61;
+ padded[248] = bytes >> 53;
+ padded[249] = bytes >> 45;
+ padded[250] = bytes >> 37;
+ padded[251] = bytes >> 29;
+ padded[252] = bytes >> 21;
+ padded[253] = bytes >> 13;
+ padded[254] = bytes >> 5;
+ padded[255] = bytes << 3;
+ blocks(h,padded,256);
+ }
+
+ for (i = 0;i < 64;++i) out[i] = h[i];
+
+ return 0;
+}
diff --git a/jni/ed25519/open.c b/jni/ed25519/open.c
new file mode 100644
index 00000000..1ec4cd2b
--- /dev/null
+++ b/jni/ed25519/open.c
@@ -0,0 +1,48 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "ge.h"
+#include "sc.h"
+
+int crypto_sign_open(
+ unsigned char *m,unsigned long long *mlen,
+ const unsigned char *sm,unsigned long long smlen,
+ const unsigned char *pk
+)
+{
+ unsigned char pkcopy[32];
+ unsigned char rcopy[32];
+ unsigned char scopy[32];
+ unsigned char h[64];
+ unsigned char rcheck[32];
+ ge_p3 A;
+ ge_p2 R;
+
+ if (smlen < 64) goto badsig;
+ if (sm[63] & 224) goto badsig;
+ if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig;
+
+ memmove(pkcopy,pk,32);
+ memmove(rcopy,sm,32);
+ memmove(scopy,sm + 32,32);
+
+ memmove(m,sm,smlen);
+ memmove(m + 32,pkcopy,32);
+ crypto_hash_sha512(h,m,smlen);
+ sc_reduce(h);
+
+ ge_double_scalarmult_vartime(&R,h,&A,scopy);
+ ge_tobytes(rcheck,&R);
+ if (crypto_verify_32(rcheck,rcopy) == 0) {
+ memmove(m,m + 64,smlen - 64);
+ memset(m + smlen - 64,0,64);
+ *mlen = smlen - 64;
+ return 0;
+ }
+
+badsig:
+ *mlen = -1;
+ memset(m,0,smlen);
+ return -1;
+}
diff --git a/jni/ed25519/pow22523.h b/jni/ed25519/pow22523.h
new file mode 100644
index 00000000..60ffe0d3
--- /dev/null
+++ b/jni/ed25519/pow22523.h
@@ -0,0 +1,160 @@
+
+/* qhasm: fe z1 */
+
+/* qhasm: fe z2 */
+
+/* qhasm: fe z8 */
+
+/* qhasm: fe z9 */
+
+/* qhasm: fe z11 */
+
+/* qhasm: fe z22 */
+
+/* qhasm: fe z_5_0 */
+
+/* qhasm: fe z_10_5 */
+
+/* qhasm: fe z_10_0 */
+
+/* qhasm: fe z_20_10 */
+
+/* qhasm: fe z_20_0 */
+
+/* qhasm: fe z_40_20 */
+
+/* qhasm: fe z_40_0 */
+
+/* qhasm: fe z_50_10 */
+
+/* qhasm: fe z_50_0 */
+
+/* qhasm: fe z_100_50 */
+
+/* qhasm: fe z_100_0 */
+
+/* qhasm: fe z_200_100 */
+
+/* qhasm: fe z_200_0 */
+
+/* qhasm: fe z_250_50 */
+
+/* qhasm: fe z_250_0 */
+
+/* qhasm: fe z_252_2 */
+
+/* qhasm: fe z_252_3 */
+
+/* qhasm: enter pow22523 */
+
+/* qhasm: z2 = z1^2^1 */
+/* asm 1: fe_sq(>z2=fe#1,<z1=fe#11); for (i = 1;i < 1;++i) fe_sq(>z2=fe#1,>z2=fe#1); */
+/* asm 2: fe_sq(>z2=t0,<z1=z); for (i = 1;i < 1;++i) fe_sq(>z2=t0,>z2=t0); */
+fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0);
+
+/* qhasm: z8 = z2^2^2 */
+/* asm 1: fe_sq(>z8=fe#2,<z2=fe#1); for (i = 1;i < 2;++i) fe_sq(>z8=fe#2,>z8=fe#2); */
+/* asm 2: fe_sq(>z8=t1,<z2=t0); for (i = 1;i < 2;++i) fe_sq(>z8=t1,>z8=t1); */
+fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1);
+
+/* qhasm: z9 = z1*z8 */
+/* asm 1: fe_mul(>z9=fe#2,<z1=fe#11,<z8=fe#2); */
+/* asm 2: fe_mul(>z9=t1,<z1=z,<z8=t1); */
+fe_mul(t1,z,t1);
+
+/* qhasm: z11 = z2*z9 */
+/* asm 1: fe_mul(>z11=fe#1,<z2=fe#1,<z9=fe#2); */
+/* asm 2: fe_mul(>z11=t0,<z2=t0,<z9=t1); */
+fe_mul(t0,t0,t1);
+
+/* qhasm: z22 = z11^2^1 */
+/* asm 1: fe_sq(>z22=fe#1,<z11=fe#1); for (i = 1;i < 1;++i) fe_sq(>z22=fe#1,>z22=fe#1); */
+/* asm 2: fe_sq(>z22=t0,<z11=t0); for (i = 1;i < 1;++i) fe_sq(>z22=t0,>z22=t0); */
+fe_sq(t0,t0); for (i = 1;i < 1;++i) fe_sq(t0,t0);
+
+/* qhasm: z_5_0 = z9*z22 */
+/* asm 1: fe_mul(>z_5_0=fe#1,<z9=fe#2,<z22=fe#1); */
+/* asm 2: fe_mul(>z_5_0=t0,<z9=t1,<z22=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_10_5 = z_5_0^2^5 */
+/* asm 1: fe_sq(>z_10_5=fe#2,<z_5_0=fe#1); for (i = 1;i < 5;++i) fe_sq(>z_10_5=fe#2,>z_10_5=fe#2); */
+/* asm 2: fe_sq(>z_10_5=t1,<z_5_0=t0); for (i = 1;i < 5;++i) fe_sq(>z_10_5=t1,>z_10_5=t1); */
+fe_sq(t1,t0); for (i = 1;i < 5;++i) fe_sq(t1,t1);
+
+/* qhasm: z_10_0 = z_10_5*z_5_0 */
+/* asm 1: fe_mul(>z_10_0=fe#1,<z_10_5=fe#2,<z_5_0=fe#1); */
+/* asm 2: fe_mul(>z_10_0=t0,<z_10_5=t1,<z_5_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_20_10 = z_10_0^2^10 */
+/* asm 1: fe_sq(>z_20_10=fe#2,<z_10_0=fe#1); for (i = 1;i < 10;++i) fe_sq(>z_20_10=fe#2,>z_20_10=fe#2); */
+/* asm 2: fe_sq(>z_20_10=t1,<z_10_0=t0); for (i = 1;i < 10;++i) fe_sq(>z_20_10=t1,>z_20_10=t1); */
+fe_sq(t1,t0); for (i = 1;i < 10;++i) fe_sq(t1,t1);
+
+/* qhasm: z_20_0 = z_20_10*z_10_0 */
+/* asm 1: fe_mul(>z_20_0=fe#2,<z_20_10=fe#2,<z_10_0=fe#1); */
+/* asm 2: fe_mul(>z_20_0=t1,<z_20_10=t1,<z_10_0=t0); */
+fe_mul(t1,t1,t0);
+
+/* qhasm: z_40_20 = z_20_0^2^20 */
+/* asm 1: fe_sq(>z_40_20=fe#3,<z_20_0=fe#2); for (i = 1;i < 20;++i) fe_sq(>z_40_20=fe#3,>z_40_20=fe#3); */
+/* asm 2: fe_sq(>z_40_20=t2,<z_20_0=t1); for (i = 1;i < 20;++i) fe_sq(>z_40_20=t2,>z_40_20=t2); */
+fe_sq(t2,t1); for (i = 1;i < 20;++i) fe_sq(t2,t2);
+
+/* qhasm: z_40_0 = z_40_20*z_20_0 */
+/* asm 1: fe_mul(>z_40_0=fe#2,<z_40_20=fe#3,<z_20_0=fe#2); */
+/* asm 2: fe_mul(>z_40_0=t1,<z_40_20=t2,<z_20_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_50_10 = z_40_0^2^10 */
+/* asm 1: fe_sq(>z_50_10=fe#2,<z_40_0=fe#2); for (i = 1;i < 10;++i) fe_sq(>z_50_10=fe#2,>z_50_10=fe#2); */
+/* asm 2: fe_sq(>z_50_10=t1,<z_40_0=t1); for (i = 1;i < 10;++i) fe_sq(>z_50_10=t1,>z_50_10=t1); */
+fe_sq(t1,t1); for (i = 1;i < 10;++i) fe_sq(t1,t1);
+
+/* qhasm: z_50_0 = z_50_10*z_10_0 */
+/* asm 1: fe_mul(>z_50_0=fe#1,<z_50_10=fe#2,<z_10_0=fe#1); */
+/* asm 2: fe_mul(>z_50_0=t0,<z_50_10=t1,<z_10_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_100_50 = z_50_0^2^50 */
+/* asm 1: fe_sq(>z_100_50=fe#2,<z_50_0=fe#1); for (i = 1;i < 50;++i) fe_sq(>z_100_50=fe#2,>z_100_50=fe#2); */
+/* asm 2: fe_sq(>z_100_50=t1,<z_50_0=t0); for (i = 1;i < 50;++i) fe_sq(>z_100_50=t1,>z_100_50=t1); */
+fe_sq(t1,t0); for (i = 1;i < 50;++i) fe_sq(t1,t1);
+
+/* qhasm: z_100_0 = z_100_50*z_50_0 */
+/* asm 1: fe_mul(>z_100_0=fe#2,<z_100_50=fe#2,<z_50_0=fe#1); */
+/* asm 2: fe_mul(>z_100_0=t1,<z_100_50=t1,<z_50_0=t0); */
+fe_mul(t1,t1,t0);
+
+/* qhasm: z_200_100 = z_100_0^2^100 */
+/* asm 1: fe_sq(>z_200_100=fe#3,<z_100_0=fe#2); for (i = 1;i < 100;++i) fe_sq(>z_200_100=fe#3,>z_200_100=fe#3); */
+/* asm 2: fe_sq(>z_200_100=t2,<z_100_0=t1); for (i = 1;i < 100;++i) fe_sq(>z_200_100=t2,>z_200_100=t2); */
+fe_sq(t2,t1); for (i = 1;i < 100;++i) fe_sq(t2,t2);
+
+/* qhasm: z_200_0 = z_200_100*z_100_0 */
+/* asm 1: fe_mul(>z_200_0=fe#2,<z_200_100=fe#3,<z_100_0=fe#2); */
+/* asm 2: fe_mul(>z_200_0=t1,<z_200_100=t2,<z_100_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_250_50 = z_200_0^2^50 */
+/* asm 1: fe_sq(>z_250_50=fe#2,<z_200_0=fe#2); for (i = 1;i < 50;++i) fe_sq(>z_250_50=fe#2,>z_250_50=fe#2); */
+/* asm 2: fe_sq(>z_250_50=t1,<z_200_0=t1); for (i = 1;i < 50;++i) fe_sq(>z_250_50=t1,>z_250_50=t1); */
+fe_sq(t1,t1); for (i = 1;i < 50;++i) fe_sq(t1,t1);
+
+/* qhasm: z_250_0 = z_250_50*z_50_0 */
+/* asm 1: fe_mul(>z_250_0=fe#1,<z_250_50=fe#2,<z_50_0=fe#1); */
+/* asm 2: fe_mul(>z_250_0=t0,<z_250_50=t1,<z_50_0=t0); */
+fe_mul(t0,t1,t0);
+
+/* qhasm: z_252_2 = z_250_0^2^2 */
+/* asm 1: fe_sq(>z_252_2=fe#1,<z_250_0=fe#1); for (i = 1;i < 2;++i) fe_sq(>z_252_2=fe#1,>z_252_2=fe#1); */
+/* asm 2: fe_sq(>z_252_2=t0,<z_250_0=t0); for (i = 1;i < 2;++i) fe_sq(>z_252_2=t0,>z_252_2=t0); */
+fe_sq(t0,t0); for (i = 1;i < 2;++i) fe_sq(t0,t0);
+
+/* qhasm: z_252_3 = z_252_2*z1 */
+/* asm 1: fe_mul(>z_252_3=fe#12,<z_252_2=fe#1,<z1=fe#11); */
+/* asm 2: fe_mul(>z_252_3=out,<z_252_2=t0,<z1=z); */
+fe_mul(out,t0,z);
+
+/* qhasm: return */
diff --git a/jni/ed25519/pow225521.h b/jni/ed25519/pow225521.h
new file mode 100644
index 00000000..109df779
--- /dev/null
+++ b/jni/ed25519/pow225521.h
@@ -0,0 +1,160 @@
+
+/* qhasm: fe z1 */
+
+/* qhasm: fe z2 */
+
+/* qhasm: fe z8 */
+
+/* qhasm: fe z9 */
+
+/* qhasm: fe z11 */
+
+/* qhasm: fe z22 */
+
+/* qhasm: fe z_5_0 */
+
+/* qhasm: fe z_10_5 */
+
+/* qhasm: fe z_10_0 */
+
+/* qhasm: fe z_20_10 */
+
+/* qhasm: fe z_20_0 */
+
+/* qhasm: fe z_40_20 */
+
+/* qhasm: fe z_40_0 */
+
+/* qhasm: fe z_50_10 */
+
+/* qhasm: fe z_50_0 */
+
+/* qhasm: fe z_100_50 */
+
+/* qhasm: fe z_100_0 */
+
+/* qhasm: fe z_200_100 */
+
+/* qhasm: fe z_200_0 */
+
+/* qhasm: fe z_250_50 */
+
+/* qhasm: fe z_250_0 */
+
+/* qhasm: fe z_255_5 */
+
+/* qhasm: fe z_255_21 */
+
+/* qhasm: enter pow225521 */
+
+/* qhasm: z2 = z1^2^1 */
+/* asm 1: fe_sq(>z2=fe#1,<z1=fe#11); for (i = 1;i < 1;++i) fe_sq(>z2=fe#1,>z2=fe#1); */
+/* asm 2: fe_sq(>z2=t0,<z1=z); for (i = 1;i < 1;++i) fe_sq(>z2=t0,>z2=t0); */
+fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0);
+
+/* qhasm: z8 = z2^2^2 */
+/* asm 1: fe_sq(>z8=fe#2,<z2=fe#1); for (i = 1;i < 2;++i) fe_sq(>z8=fe#2,>z8=fe#2); */
+/* asm 2: fe_sq(>z8=t1,<z2=t0); for (i = 1;i < 2;++i) fe_sq(>z8=t1,>z8=t1); */
+fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1);
+
+/* qhasm: z9 = z1*z8 */
+/* asm 1: fe_mul(>z9=fe#2,<z1=fe#11,<z8=fe#2); */
+/* asm 2: fe_mul(>z9=t1,<z1=z,<z8=t1); */
+fe_mul(t1,z,t1);
+
+/* qhasm: z11 = z2*z9 */
+/* asm 1: fe_mul(>z11=fe#1,<z2=fe#1,<z9=fe#2); */
+/* asm 2: fe_mul(>z11=t0,<z2=t0,<z9=t1); */
+fe_mul(t0,t0,t1);
+
+/* qhasm: z22 = z11^2^1 */
+/* asm 1: fe_sq(>z22=fe#3,<z11=fe#1); for (i = 1;i < 1;++i) fe_sq(>z22=fe#3,>z22=fe#3); */
+/* asm 2: fe_sq(>z22=t2,<z11=t0); for (i = 1;i < 1;++i) fe_sq(>z22=t2,>z22=t2); */
+fe_sq(t2,t0); for (i = 1;i < 1;++i) fe_sq(t2,t2);
+
+/* qhasm: z_5_0 = z9*z22 */
+/* asm 1: fe_mul(>z_5_0=fe#2,<z9=fe#2,<z22=fe#3); */
+/* asm 2: fe_mul(>z_5_0=t1,<z9=t1,<z22=t2); */
+fe_mul(t1,t1,t2);
+
+/* qhasm: z_10_5 = z_5_0^2^5 */
+/* asm 1: fe_sq(>z_10_5=fe#3,<z_5_0=fe#2); for (i = 1;i < 5;++i) fe_sq(>z_10_5=fe#3,>z_10_5=fe#3); */
+/* asm 2: fe_sq(>z_10_5=t2,<z_5_0=t1); for (i = 1;i < 5;++i) fe_sq(>z_10_5=t2,>z_10_5=t2); */
+fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2);
+
+/* qhasm: z_10_0 = z_10_5*z_5_0 */
+/* asm 1: fe_mul(>z_10_0=fe#2,<z_10_5=fe#3,<z_5_0=fe#2); */
+/* asm 2: fe_mul(>z_10_0=t1,<z_10_5=t2,<z_5_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_20_10 = z_10_0^2^10 */
+/* asm 1: fe_sq(>z_20_10=fe#3,<z_10_0=fe#2); for (i = 1;i < 10;++i) fe_sq(>z_20_10=fe#3,>z_20_10=fe#3); */
+/* asm 2: fe_sq(>z_20_10=t2,<z_10_0=t1); for (i = 1;i < 10;++i) fe_sq(>z_20_10=t2,>z_20_10=t2); */
+fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2);
+
+/* qhasm: z_20_0 = z_20_10*z_10_0 */
+/* asm 1: fe_mul(>z_20_0=fe#3,<z_20_10=fe#3,<z_10_0=fe#2); */
+/* asm 2: fe_mul(>z_20_0=t2,<z_20_10=t2,<z_10_0=t1); */
+fe_mul(t2,t2,t1);
+
+/* qhasm: z_40_20 = z_20_0^2^20 */
+/* asm 1: fe_sq(>z_40_20=fe#4,<z_20_0=fe#3); for (i = 1;i < 20;++i) fe_sq(>z_40_20=fe#4,>z_40_20=fe#4); */
+/* asm 2: fe_sq(>z_40_20=t3,<z_20_0=t2); for (i = 1;i < 20;++i) fe_sq(>z_40_20=t3,>z_40_20=t3); */
+fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3);
+
+/* qhasm: z_40_0 = z_40_20*z_20_0 */
+/* asm 1: fe_mul(>z_40_0=fe#3,<z_40_20=fe#4,<z_20_0=fe#3); */
+/* asm 2: fe_mul(>z_40_0=t2,<z_40_20=t3,<z_20_0=t2); */
+fe_mul(t2,t3,t2);
+
+/* qhasm: z_50_10 = z_40_0^2^10 */
+/* asm 1: fe_sq(>z_50_10=fe#3,<z_40_0=fe#3); for (i = 1;i < 10;++i) fe_sq(>z_50_10=fe#3,>z_50_10=fe#3); */
+/* asm 2: fe_sq(>z_50_10=t2,<z_40_0=t2); for (i = 1;i < 10;++i) fe_sq(>z_50_10=t2,>z_50_10=t2); */
+fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2);
+
+/* qhasm: z_50_0 = z_50_10*z_10_0 */
+/* asm 1: fe_mul(>z_50_0=fe#2,<z_50_10=fe#3,<z_10_0=fe#2); */
+/* asm 2: fe_mul(>z_50_0=t1,<z_50_10=t2,<z_10_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_100_50 = z_50_0^2^50 */
+/* asm 1: fe_sq(>z_100_50=fe#3,<z_50_0=fe#2); for (i = 1;i < 50;++i) fe_sq(>z_100_50=fe#3,>z_100_50=fe#3); */
+/* asm 2: fe_sq(>z_100_50=t2,<z_50_0=t1); for (i = 1;i < 50;++i) fe_sq(>z_100_50=t2,>z_100_50=t2); */
+fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2);
+
+/* qhasm: z_100_0 = z_100_50*z_50_0 */
+/* asm 1: fe_mul(>z_100_0=fe#3,<z_100_50=fe#3,<z_50_0=fe#2); */
+/* asm 2: fe_mul(>z_100_0=t2,<z_100_50=t2,<z_50_0=t1); */
+fe_mul(t2,t2,t1);
+
+/* qhasm: z_200_100 = z_100_0^2^100 */
+/* asm 1: fe_sq(>z_200_100=fe#4,<z_100_0=fe#3); for (i = 1;i < 100;++i) fe_sq(>z_200_100=fe#4,>z_200_100=fe#4); */
+/* asm 2: fe_sq(>z_200_100=t3,<z_100_0=t2); for (i = 1;i < 100;++i) fe_sq(>z_200_100=t3,>z_200_100=t3); */
+fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3);
+
+/* qhasm: z_200_0 = z_200_100*z_100_0 */
+/* asm 1: fe_mul(>z_200_0=fe#3,<z_200_100=fe#4,<z_100_0=fe#3); */
+/* asm 2: fe_mul(>z_200_0=t2,<z_200_100=t3,<z_100_0=t2); */
+fe_mul(t2,t3,t2);
+
+/* qhasm: z_250_50 = z_200_0^2^50 */
+/* asm 1: fe_sq(>z_250_50=fe#3,<z_200_0=fe#3); for (i = 1;i < 50;++i) fe_sq(>z_250_50=fe#3,>z_250_50=fe#3); */
+/* asm 2: fe_sq(>z_250_50=t2,<z_200_0=t2); for (i = 1;i < 50;++i) fe_sq(>z_250_50=t2,>z_250_50=t2); */
+fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2);
+
+/* qhasm: z_250_0 = z_250_50*z_50_0 */
+/* asm 1: fe_mul(>z_250_0=fe#2,<z_250_50=fe#3,<z_50_0=fe#2); */
+/* asm 2: fe_mul(>z_250_0=t1,<z_250_50=t2,<z_50_0=t1); */
+fe_mul(t1,t2,t1);
+
+/* qhasm: z_255_5 = z_250_0^2^5 */
+/* asm 1: fe_sq(>z_255_5=fe#2,<z_250_0=fe#2); for (i = 1;i < 5;++i) fe_sq(>z_255_5=fe#2,>z_255_5=fe#2); */
+/* asm 2: fe_sq(>z_255_5=t1,<z_250_0=t1); for (i = 1;i < 5;++i) fe_sq(>z_255_5=t1,>z_255_5=t1); */
+fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1);
+
+/* qhasm: z_255_21 = z_255_5*z11 */
+/* asm 1: fe_mul(>z_255_21=fe#12,<z_255_5=fe#2,<z11=fe#1); */
+/* asm 2: fe_mul(>z_255_21=out,<z_255_5=t1,<z11=t0); */
+fe_mul(out,t1,t0);
+
+/* qhasm: return */
diff --git a/jni/ed25519/sc.h b/jni/ed25519/sc.h
new file mode 100644
index 00000000..d32ed2e8
--- /dev/null
+++ b/jni/ed25519/sc.h
@@ -0,0 +1,15 @@
+#ifndef SC_H
+#define SC_H
+
+/*
+The set of scalars is \Z/l
+where l = 2^252 + 27742317777372353535851937790883648493.
+*/
+
+#define sc_reduce crypto_sign_ed25519_ref10_sc_reduce
+#define sc_muladd crypto_sign_ed25519_ref10_sc_muladd
+
+extern void sc_reduce(unsigned char *);
+extern void sc_muladd(unsigned char *,const unsigned char *,const unsigned char *,const unsigned char *);
+
+#endif
diff --git a/jni/ed25519/sc_muladd.c b/jni/ed25519/sc_muladd.c
new file mode 100644
index 00000000..6f1e9d02
--- /dev/null
+++ b/jni/ed25519/sc_muladd.c
@@ -0,0 +1,368 @@
+#include "sc.h"
+#include "crypto_int64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ result |= ((crypto_uint64) in[3]) << 24;
+ return result;
+}
+
+/*
+Input:
+ a[0]+256*a[1]+...+256^31*a[31] = a
+ b[0]+256*b[1]+...+256^31*b[31] = b
+ c[0]+256*c[1]+...+256^31*c[31] = c
+
+Output:
+ s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+ where l = 2^252 + 27742317777372353535851937790883648493.
+*/
+
+void sc_muladd(unsigned char *s,const unsigned char *a,const unsigned char *b,const unsigned char *c)
+{
+ crypto_int64 a0 = 2097151 & load_3(a);
+ crypto_int64 a1 = 2097151 & (load_4(a + 2) >> 5);
+ crypto_int64 a2 = 2097151 & (load_3(a + 5) >> 2);
+ crypto_int64 a3 = 2097151 & (load_4(a + 7) >> 7);
+ crypto_int64 a4 = 2097151 & (load_4(a + 10) >> 4);
+ crypto_int64 a5 = 2097151 & (load_3(a + 13) >> 1);
+ crypto_int64 a6 = 2097151 & (load_4(a + 15) >> 6);
+ crypto_int64 a7 = 2097151 & (load_3(a + 18) >> 3);
+ crypto_int64 a8 = 2097151 & load_3(a + 21);
+ crypto_int64 a9 = 2097151 & (load_4(a + 23) >> 5);
+ crypto_int64 a10 = 2097151 & (load_3(a + 26) >> 2);
+ crypto_int64 a11 = (load_4(a + 28) >> 7);
+ crypto_int64 b0 = 2097151 & load_3(b);
+ crypto_int64 b1 = 2097151 & (load_4(b + 2) >> 5);
+ crypto_int64 b2 = 2097151 & (load_3(b + 5) >> 2);
+ crypto_int64 b3 = 2097151 & (load_4(b + 7) >> 7);
+ crypto_int64 b4 = 2097151 & (load_4(b + 10) >> 4);
+ crypto_int64 b5 = 2097151 & (load_3(b + 13) >> 1);
+ crypto_int64 b6 = 2097151 & (load_4(b + 15) >> 6);
+ crypto_int64 b7 = 2097151 & (load_3(b + 18) >> 3);
+ crypto_int64 b8 = 2097151 & load_3(b + 21);
+ crypto_int64 b9 = 2097151 & (load_4(b + 23) >> 5);
+ crypto_int64 b10 = 2097151 & (load_3(b + 26) >> 2);
+ crypto_int64 b11 = (load_4(b + 28) >> 7);
+ crypto_int64 c0 = 2097151 & load_3(c);
+ crypto_int64 c1 = 2097151 & (load_4(c + 2) >> 5);
+ crypto_int64 c2 = 2097151 & (load_3(c + 5) >> 2);
+ crypto_int64 c3 = 2097151 & (load_4(c + 7) >> 7);
+ crypto_int64 c4 = 2097151 & (load_4(c + 10) >> 4);
+ crypto_int64 c5 = 2097151 & (load_3(c + 13) >> 1);
+ crypto_int64 c6 = 2097151 & (load_4(c + 15) >> 6);
+ crypto_int64 c7 = 2097151 & (load_3(c + 18) >> 3);
+ crypto_int64 c8 = 2097151 & load_3(c + 21);
+ crypto_int64 c9 = 2097151 & (load_4(c + 23) >> 5);
+ crypto_int64 c10 = 2097151 & (load_3(c + 26) >> 2);
+ crypto_int64 c11 = (load_4(c + 28) >> 7);
+ crypto_int64 s0;
+ crypto_int64 s1;
+ crypto_int64 s2;
+ crypto_int64 s3;
+ crypto_int64 s4;
+ crypto_int64 s5;
+ crypto_int64 s6;
+ crypto_int64 s7;
+ crypto_int64 s8;
+ crypto_int64 s9;
+ crypto_int64 s10;
+ crypto_int64 s11;
+ crypto_int64 s12;
+ crypto_int64 s13;
+ crypto_int64 s14;
+ crypto_int64 s15;
+ crypto_int64 s16;
+ crypto_int64 s17;
+ crypto_int64 s18;
+ crypto_int64 s19;
+ crypto_int64 s20;
+ crypto_int64 s21;
+ crypto_int64 s22;
+ crypto_int64 s23;
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+ crypto_int64 carry10;
+ crypto_int64 carry11;
+ crypto_int64 carry12;
+ crypto_int64 carry13;
+ crypto_int64 carry14;
+ crypto_int64 carry15;
+ crypto_int64 carry16;
+ crypto_int64 carry17;
+ crypto_int64 carry18;
+ crypto_int64 carry19;
+ crypto_int64 carry20;
+ crypto_int64 carry21;
+ crypto_int64 carry22;
+
+ s0 = c0 + a0*b0;
+ s1 = c1 + a0*b1 + a1*b0;
+ s2 = c2 + a0*b2 + a1*b1 + a2*b0;
+ s3 = c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0;
+ s4 = c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0;
+ s5 = c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0;
+ s6 = c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0;
+ s7 = c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0;
+ s8 = c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0;
+ s9 = c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0;
+ s10 = c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0;
+ s11 = c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0;
+ s12 = a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1;
+ s13 = a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2;
+ s14 = a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3;
+ s15 = a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4;
+ s16 = a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5;
+ s17 = a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6;
+ s18 = a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7;
+ s19 = a8*b11 + a9*b10 + a10*b9 + a11*b8;
+ s20 = a9*b11 + a10*b10 + a11*b9;
+ s21 = a10*b11 + a11*b10;
+ s22 = a11*b11;
+ s23 = 0;
+
+ carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+ carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+ carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+ carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+ carry18 = (s18 + (1<<20)) >> 21; s19 += carry18; s18 -= carry18 << 21;
+ carry20 = (s20 + (1<<20)) >> 21; s21 += carry20; s20 -= carry20 << 21;
+ carry22 = (s22 + (1<<20)) >> 21; s23 += carry22; s22 -= carry22 << 21;
+
+ carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+ carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+ carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+ carry17 = (s17 + (1<<20)) >> 21; s18 += carry17; s17 -= carry17 << 21;
+ carry19 = (s19 + (1<<20)) >> 21; s20 += carry19; s19 -= carry19 << 21;
+ carry21 = (s21 + (1<<20)) >> 21; s22 += carry21; s21 -= carry21 << 21;
+
+ s11 += s23 * 666643;
+ s12 += s23 * 470296;
+ s13 += s23 * 654183;
+ s14 -= s23 * 997805;
+ s15 += s23 * 136657;
+ s16 -= s23 * 683901;
+ s23 = 0;
+
+ s10 += s22 * 666643;
+ s11 += s22 * 470296;
+ s12 += s22 * 654183;
+ s13 -= s22 * 997805;
+ s14 += s22 * 136657;
+ s15 -= s22 * 683901;
+ s22 = 0;
+
+ s9 += s21 * 666643;
+ s10 += s21 * 470296;
+ s11 += s21 * 654183;
+ s12 -= s21 * 997805;
+ s13 += s21 * 136657;
+ s14 -= s21 * 683901;
+ s21 = 0;
+
+ s8 += s20 * 666643;
+ s9 += s20 * 470296;
+ s10 += s20 * 654183;
+ s11 -= s20 * 997805;
+ s12 += s20 * 136657;
+ s13 -= s20 * 683901;
+ s20 = 0;
+
+ s7 += s19 * 666643;
+ s8 += s19 * 470296;
+ s9 += s19 * 654183;
+ s10 -= s19 * 997805;
+ s11 += s19 * 136657;
+ s12 -= s19 * 683901;
+ s19 = 0;
+
+ s6 += s18 * 666643;
+ s7 += s18 * 470296;
+ s8 += s18 * 654183;
+ s9 -= s18 * 997805;
+ s10 += s18 * 136657;
+ s11 -= s18 * 683901;
+ s18 = 0;
+
+ carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+ carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+ carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+ carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+
+ carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+ carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+ carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+
+ s5 += s17 * 666643;
+ s6 += s17 * 470296;
+ s7 += s17 * 654183;
+ s8 -= s17 * 997805;
+ s9 += s17 * 136657;
+ s10 -= s17 * 683901;
+ s17 = 0;
+
+ s4 += s16 * 666643;
+ s5 += s16 * 470296;
+ s6 += s16 * 654183;
+ s7 -= s16 * 997805;
+ s8 += s16 * 136657;
+ s9 -= s16 * 683901;
+ s16 = 0;
+
+ s3 += s15 * 666643;
+ s4 += s15 * 470296;
+ s5 += s15 * 654183;
+ s6 -= s15 * 997805;
+ s7 += s15 * 136657;
+ s8 -= s15 * 683901;
+ s15 = 0;
+
+ s2 += s14 * 666643;
+ s3 += s14 * 470296;
+ s4 += s14 * 654183;
+ s5 -= s14 * 997805;
+ s6 += s14 * 136657;
+ s7 -= s14 * 683901;
+ s14 = 0;
+
+ s1 += s13 * 666643;
+ s2 += s13 * 470296;
+ s3 += s13 * 654183;
+ s4 -= s13 * 997805;
+ s5 += s13 * 136657;
+ s6 -= s13 * 683901;
+ s13 = 0;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+ carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+ carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+ s[0] = s0 >> 0;
+ s[1] = s0 >> 8;
+ s[2] = (s0 >> 16) | (s1 << 5);
+ s[3] = s1 >> 3;
+ s[4] = s1 >> 11;
+ s[5] = (s1 >> 19) | (s2 << 2);
+ s[6] = s2 >> 6;
+ s[7] = (s2 >> 14) | (s3 << 7);
+ s[8] = s3 >> 1;
+ s[9] = s3 >> 9;
+ s[10] = (s3 >> 17) | (s4 << 4);
+ s[11] = s4 >> 4;
+ s[12] = s4 >> 12;
+ s[13] = (s4 >> 20) | (s5 << 1);
+ s[14] = s5 >> 7;
+ s[15] = (s5 >> 15) | (s6 << 6);
+ s[16] = s6 >> 2;
+ s[17] = s6 >> 10;
+ s[18] = (s6 >> 18) | (s7 << 3);
+ s[19] = s7 >> 5;
+ s[20] = s7 >> 13;
+ s[21] = s8 >> 0;
+ s[22] = s8 >> 8;
+ s[23] = (s8 >> 16) | (s9 << 5);
+ s[24] = s9 >> 3;
+ s[25] = s9 >> 11;
+ s[26] = (s9 >> 19) | (s10 << 2);
+ s[27] = s10 >> 6;
+ s[28] = (s10 >> 14) | (s11 << 7);
+ s[29] = s11 >> 1;
+ s[30] = s11 >> 9;
+ s[31] = s11 >> 17;
+}
diff --git a/jni/ed25519/sc_reduce.c b/jni/ed25519/sc_reduce.c
new file mode 100644
index 00000000..d01f5a57
--- /dev/null
+++ b/jni/ed25519/sc_reduce.c
@@ -0,0 +1,275 @@
+#include "sc.h"
+#include "crypto_int64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint64.h"
+
+static crypto_uint64 load_3(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ return result;
+}
+
+static crypto_uint64 load_4(const unsigned char *in)
+{
+ crypto_uint64 result;
+ result = (crypto_uint64) in[0];
+ result |= ((crypto_uint64) in[1]) << 8;
+ result |= ((crypto_uint64) in[2]) << 16;
+ result |= ((crypto_uint64) in[3]) << 24;
+ return result;
+}
+
+/*
+Input:
+ s[0]+256*s[1]+...+256^63*s[63] = s
+
+Output:
+ s[0]+256*s[1]+...+256^31*s[31] = s mod l
+ where l = 2^252 + 27742317777372353535851937790883648493.
+ Overwrites s in place.
+*/
+
+void sc_reduce(unsigned char *s)
+{
+ crypto_int64 s0 = 2097151 & load_3(s);
+ crypto_int64 s1 = 2097151 & (load_4(s + 2) >> 5);
+ crypto_int64 s2 = 2097151 & (load_3(s + 5) >> 2);
+ crypto_int64 s3 = 2097151 & (load_4(s + 7) >> 7);
+ crypto_int64 s4 = 2097151 & (load_4(s + 10) >> 4);
+ crypto_int64 s5 = 2097151 & (load_3(s + 13) >> 1);
+ crypto_int64 s6 = 2097151 & (load_4(s + 15) >> 6);
+ crypto_int64 s7 = 2097151 & (load_3(s + 18) >> 3);
+ crypto_int64 s8 = 2097151 & load_3(s + 21);
+ crypto_int64 s9 = 2097151 & (load_4(s + 23) >> 5);
+ crypto_int64 s10 = 2097151 & (load_3(s + 26) >> 2);
+ crypto_int64 s11 = 2097151 & (load_4(s + 28) >> 7);
+ crypto_int64 s12 = 2097151 & (load_4(s + 31) >> 4);
+ crypto_int64 s13 = 2097151 & (load_3(s + 34) >> 1);
+ crypto_int64 s14 = 2097151 & (load_4(s + 36) >> 6);
+ crypto_int64 s15 = 2097151 & (load_3(s + 39) >> 3);
+ crypto_int64 s16 = 2097151 & load_3(s + 42);
+ crypto_int64 s17 = 2097151 & (load_4(s + 44) >> 5);
+ crypto_int64 s18 = 2097151 & (load_3(s + 47) >> 2);
+ crypto_int64 s19 = 2097151 & (load_4(s + 49) >> 7);
+ crypto_int64 s20 = 2097151 & (load_4(s + 52) >> 4);
+ crypto_int64 s21 = 2097151 & (load_3(s + 55) >> 1);
+ crypto_int64 s22 = 2097151 & (load_4(s + 57) >> 6);
+ crypto_int64 s23 = (load_4(s + 60) >> 3);
+ crypto_int64 carry0;
+ crypto_int64 carry1;
+ crypto_int64 carry2;
+ crypto_int64 carry3;
+ crypto_int64 carry4;
+ crypto_int64 carry5;
+ crypto_int64 carry6;
+ crypto_int64 carry7;
+ crypto_int64 carry8;
+ crypto_int64 carry9;
+ crypto_int64 carry10;
+ crypto_int64 carry11;
+ crypto_int64 carry12;
+ crypto_int64 carry13;
+ crypto_int64 carry14;
+ crypto_int64 carry15;
+ crypto_int64 carry16;
+
+ s11 += s23 * 666643;
+ s12 += s23 * 470296;
+ s13 += s23 * 654183;
+ s14 -= s23 * 997805;
+ s15 += s23 * 136657;
+ s16 -= s23 * 683901;
+ s23 = 0;
+
+ s10 += s22 * 666643;
+ s11 += s22 * 470296;
+ s12 += s22 * 654183;
+ s13 -= s22 * 997805;
+ s14 += s22 * 136657;
+ s15 -= s22 * 683901;
+ s22 = 0;
+
+ s9 += s21 * 666643;
+ s10 += s21 * 470296;
+ s11 += s21 * 654183;
+ s12 -= s21 * 997805;
+ s13 += s21 * 136657;
+ s14 -= s21 * 683901;
+ s21 = 0;
+
+ s8 += s20 * 666643;
+ s9 += s20 * 470296;
+ s10 += s20 * 654183;
+ s11 -= s20 * 997805;
+ s12 += s20 * 136657;
+ s13 -= s20 * 683901;
+ s20 = 0;
+
+ s7 += s19 * 666643;
+ s8 += s19 * 470296;
+ s9 += s19 * 654183;
+ s10 -= s19 * 997805;
+ s11 += s19 * 136657;
+ s12 -= s19 * 683901;
+ s19 = 0;
+
+ s6 += s18 * 666643;
+ s7 += s18 * 470296;
+ s8 += s18 * 654183;
+ s9 -= s18 * 997805;
+ s10 += s18 * 136657;
+ s11 -= s18 * 683901;
+ s18 = 0;
+
+ carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+ carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21;
+ carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21;
+ carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21;
+
+ carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+ carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21;
+ carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21;
+
+ s5 += s17 * 666643;
+ s6 += s17 * 470296;
+ s7 += s17 * 654183;
+ s8 -= s17 * 997805;
+ s9 += s17 * 136657;
+ s10 -= s17 * 683901;
+ s17 = 0;
+
+ s4 += s16 * 666643;
+ s5 += s16 * 470296;
+ s6 += s16 * 654183;
+ s7 -= s16 * 997805;
+ s8 += s16 * 136657;
+ s9 -= s16 * 683901;
+ s16 = 0;
+
+ s3 += s15 * 666643;
+ s4 += s15 * 470296;
+ s5 += s15 * 654183;
+ s6 -= s15 * 997805;
+ s7 += s15 * 136657;
+ s8 -= s15 * 683901;
+ s15 = 0;
+
+ s2 += s14 * 666643;
+ s3 += s14 * 470296;
+ s4 += s14 * 654183;
+ s5 -= s14 * 997805;
+ s6 += s14 * 136657;
+ s7 -= s14 * 683901;
+ s14 = 0;
+
+ s1 += s13 * 666643;
+ s2 += s13 * 470296;
+ s3 += s13 * 654183;
+ s4 -= s13 * 997805;
+ s5 += s13 * 136657;
+ s6 -= s13 * 683901;
+ s13 = 0;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+ carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+ carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21;
+
+ s0 += s12 * 666643;
+ s1 += s12 * 470296;
+ s2 += s12 * 654183;
+ s3 -= s12 * 997805;
+ s4 += s12 * 136657;
+ s5 -= s12 * 683901;
+ s12 = 0;
+
+ carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
+ carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
+ carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21;
+ carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21;
+ carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21;
+ carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21;
+ carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21;
+ carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21;
+ carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21;
+ carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21;
+ carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21;
+
+ s[0] = s0 >> 0;
+ s[1] = s0 >> 8;
+ s[2] = (s0 >> 16) | (s1 << 5);
+ s[3] = s1 >> 3;
+ s[4] = s1 >> 11;
+ s[5] = (s1 >> 19) | (s2 << 2);
+ s[6] = s2 >> 6;
+ s[7] = (s2 >> 14) | (s3 << 7);
+ s[8] = s3 >> 1;
+ s[9] = s3 >> 9;
+ s[10] = (s3 >> 17) | (s4 << 4);
+ s[11] = s4 >> 4;
+ s[12] = s4 >> 12;
+ s[13] = (s4 >> 20) | (s5 << 1);
+ s[14] = s5 >> 7;
+ s[15] = (s5 >> 15) | (s6 << 6);
+ s[16] = s6 >> 2;
+ s[17] = s6 >> 10;
+ s[18] = (s6 >> 18) | (s7 << 3);
+ s[19] = s7 >> 5;
+ s[20] = s7 >> 13;
+ s[21] = s8 >> 0;
+ s[22] = s8 >> 8;
+ s[23] = (s8 >> 16) | (s9 << 5);
+ s[24] = s9 >> 3;
+ s[25] = s9 >> 11;
+ s[26] = (s9 >> 19) | (s10 << 2);
+ s[27] = s10 >> 6;
+ s[28] = (s10 >> 14) | (s11 << 7);
+ s[29] = s11 >> 1;
+ s[30] = s11 >> 9;
+ s[31] = s11 >> 17;
+}
diff --git a/jni/ed25519/sign.c b/jni/ed25519/sign.c
new file mode 100644
index 00000000..de53742a
--- /dev/null
+++ b/jni/ed25519/sign.c
@@ -0,0 +1,41 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+#include "sc.h"
+
+int crypto_sign(
+ unsigned char *sm,unsigned long long *smlen,
+ const unsigned char *m,unsigned long long mlen,
+ const unsigned char *sk
+)
+{
+ unsigned char pk[32];
+ unsigned char az[64];
+ unsigned char nonce[64];
+ unsigned char hram[64];
+ ge_p3 R;
+
+ memmove(pk,sk + 32,32);
+
+ crypto_hash_sha512(az,sk,32);
+ az[0] &= 248;
+ az[31] &= 63;
+ az[31] |= 64;
+
+ *smlen = mlen + 64;
+ memmove(sm + 64,m,mlen);
+ memmove(sm + 32,az + 32,32);
+ crypto_hash_sha512(nonce,sm + 32,mlen + 32);
+ memmove(sm + 32,pk,32);
+
+ sc_reduce(nonce);
+ ge_scalarmult_base(&R,nonce);
+ ge_p3_tobytes(sm,&R);
+
+ crypto_hash_sha512(hram,sm,mlen + 64);
+ sc_reduce(hram);
+ sc_muladd(sm + 32,hram,az,nonce);
+
+ return 0;
+}
diff --git a/jni/ed25519/sqrtm1.h b/jni/ed25519/sqrtm1.h
new file mode 100644
index 00000000..d8caa23b
--- /dev/null
+++ b/jni/ed25519/sqrtm1.h
@@ -0,0 +1 @@
+-32595792,-7943725,9377950,3500415,12389472,-272473,-25146209,-2005654,326686,11406482