1 files changed, 106 insertions, 0 deletions
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;
+}