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package org.whispersystems.test;
import android.test.AndroidTestCase;
import org.whispersystems.libaxolotl.DuplicateMessageException;
import org.whispersystems.libaxolotl.InvalidKeyException;
import org.whispersystems.libaxolotl.InvalidKeyIdException;
import org.whispersystems.libaxolotl.InvalidMessageException;
import org.whispersystems.libaxolotl.InvalidVersionException;
import org.whispersystems.libaxolotl.LegacyMessageException;
import org.whispersystems.libaxolotl.NoSessionException;
import org.whispersystems.libaxolotl.SessionBuilder;
import org.whispersystems.libaxolotl.SessionCipher;
import org.whispersystems.libaxolotl.StaleKeyExchangeException;
import org.whispersystems.libaxolotl.UntrustedIdentityException;
import org.whispersystems.libaxolotl.ecc.Curve;
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
import org.whispersystems.libaxolotl.protocol.CiphertextMessage;
import org.whispersystems.libaxolotl.protocol.KeyExchangeMessage;
import org.whispersystems.libaxolotl.protocol.PreKeyWhisperMessage;
import org.whispersystems.libaxolotl.protocol.WhisperMessage;
import org.whispersystems.libaxolotl.state.AxolotlStore;
import org.whispersystems.libaxolotl.state.IdentityKeyStore;
import org.whispersystems.libaxolotl.state.PreKeyBundle;
import org.whispersystems.libaxolotl.state.PreKeyRecord;
import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
import org.whispersystems.libaxolotl.util.Pair;
import java.util.HashSet;
import java.util.Set;
public class SessionBuilderTest extends AndroidTestCase {
private static final long ALICE_RECIPIENT_ID = 5L;
private static final long BOB_RECIPIENT_ID = 2L;
public void testBasicPreKeyV2()
throws InvalidKeyException, InvalidVersionException, InvalidMessageException, InvalidKeyIdException, DuplicateMessageException, LegacyMessageException, UntrustedIdentityException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
0, null, null,
bobStore.getIdentityKeyPair().getPublicKey());
aliceSessionBuilder.process(bobPreKey);
assertTrue(aliceStore.containsSession(BOB_RECIPIENT_ID, 1));
assertTrue(aliceStore.loadSession(BOB_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 2);
String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessage.getType() == CiphertextMessage.PREKEY_TYPE);
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(outgoingMessage.serialize());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = bobSessionCipher.decrypt(incomingMessage);
assertTrue(bobStore.containsSession(ALICE_RECIPIENT_ID, 1));
assertTrue(bobStore.loadSession(ALICE_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 2);
assertTrue(originalMessage.equals(new String(plaintext)));
CiphertextMessage bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(bobOutgoingMessage.getType() == CiphertextMessage.WHISPER_TYPE);
byte[] alicePlaintext = aliceSessionCipher.decrypt((WhisperMessage)bobOutgoingMessage);
assertTrue(new String(alicePlaintext).equals(originalMessage));
runInteraction(aliceStore, bobStore);
aliceStore = new InMemoryAxolotlStore();
aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
bobPreKeyPair = Curve.generateKeyPair();
bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(),
1, 31338, bobPreKeyPair.getPublicKey(),
0, null, null, bobStore.getIdentityKeyPair().getPublicKey());
bobStore.storePreKey(31338, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
aliceSessionBuilder.process(bobPreKey);
outgoingMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
try {
bobSessionCipher.decrypt(new PreKeyWhisperMessage(outgoingMessage.serialize()));
throw new AssertionError("shouldn't be trusted!");
} catch (UntrustedIdentityException uie) {
bobStore.saveIdentity(ALICE_RECIPIENT_ID, new PreKeyWhisperMessage(outgoingMessage.serialize()).getIdentityKey());
}
plaintext = bobSessionCipher.decrypt(new PreKeyWhisperMessage(outgoingMessage.serialize()));
assertTrue(new String(plaintext).equals(originalMessage));
bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, Curve.generateKeyPair().getPublicKey(),
0, null, null,
aliceStore.getIdentityKeyPair().getPublicKey());
try {
aliceSessionBuilder.process(bobPreKey);
throw new AssertionError("shoulnd't be trusted!");
} catch (UntrustedIdentityException uie) {
// good
}
}
public void testBasicPreKeyV3()
throws InvalidKeyException, InvalidVersionException, InvalidMessageException, InvalidKeyIdException, DuplicateMessageException, LegacyMessageException, UntrustedIdentityException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
final AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(),
bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey());
aliceSessionBuilder.process(bobPreKey);
assertTrue(aliceStore.containsSession(BOB_RECIPIENT_ID, 1));
assertTrue(aliceStore.loadSession(BOB_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3);
final String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessage.getType() == CiphertextMessage.PREKEY_TYPE);
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(outgoingMessage.serialize());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(22, new SignedPreKeyRecord(22, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = bobSessionCipher.decrypt(incomingMessage, new SessionCipher.DecryptionCallback() {
@Override
public void handlePlaintext(byte[] plaintext) {
assertTrue(originalMessage.equals(new String(plaintext)));
assertFalse(bobStore.containsSession(ALICE_RECIPIENT_ID, 1));
}
});
assertTrue(bobStore.containsSession(ALICE_RECIPIENT_ID, 1));
assertTrue(bobStore.loadSession(ALICE_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3);
assertTrue(bobStore.loadSession(ALICE_RECIPIENT_ID, 1).getSessionState().getAliceBaseKey() != null);
assertTrue(originalMessage.equals(new String(plaintext)));
CiphertextMessage bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(bobOutgoingMessage.getType() == CiphertextMessage.WHISPER_TYPE);
byte[] alicePlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobOutgoingMessage.serialize()));
assertTrue(new String(alicePlaintext).equals(originalMessage));
runInteraction(aliceStore, bobStore);
aliceStore = new InMemoryAxolotlStore();
aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
bobPreKeyPair = Curve.generateKeyPair();
bobSignedPreKeyPair = Curve.generateKeyPair();
bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(), bobSignedPreKeyPair.getPublicKey().serialize());
bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(),
1, 31338, bobPreKeyPair.getPublicKey(),
23, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey());
bobStore.storePreKey(31338, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(23, new SignedPreKeyRecord(23, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
aliceSessionBuilder.process(bobPreKey);
outgoingMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
try {
plaintext = bobSessionCipher.decrypt(new PreKeyWhisperMessage(outgoingMessage.serialize()));
throw new AssertionError("shouldn't be trusted!");
} catch (UntrustedIdentityException uie) {
bobStore.saveIdentity(ALICE_RECIPIENT_ID, new PreKeyWhisperMessage(outgoingMessage.serialize()).getIdentityKey());
}
plaintext = bobSessionCipher.decrypt(new PreKeyWhisperMessage(outgoingMessage.serialize()));
assertTrue(new String(plaintext).equals(originalMessage));
bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, Curve.generateKeyPair().getPublicKey(),
23, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
aliceStore.getIdentityKeyPair().getPublicKey());
try {
aliceSessionBuilder.process(bobPreKey);
throw new AssertionError("shoulnd't be trusted!");
} catch (UntrustedIdentityException uie) {
// good
}
}
public void testBadSignedPreKeySignature() throws InvalidKeyException, UntrustedIdentityException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
IdentityKeyStore bobIdentityKeyStore = new InMemoryIdentityKeyStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobIdentityKeyStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
for (int i=0;i<bobSignedPreKeySignature.length * 8;i++) {
byte[] modifiedSignature = new byte[bobSignedPreKeySignature.length];
System.arraycopy(bobSignedPreKeySignature, 0, modifiedSignature, 0, modifiedSignature.length);
modifiedSignature[i/8] ^= (0x01 << (i % 8));
PreKeyBundle bobPreKey = new PreKeyBundle(bobIdentityKeyStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), modifiedSignature,
bobIdentityKeyStore.getIdentityKeyPair().getPublicKey());
try {
aliceSessionBuilder.process(bobPreKey);
throw new AssertionError("Accepted modified device key signature!");
} catch (InvalidKeyException ike) {
// good
}
}
PreKeyBundle bobPreKey = new PreKeyBundle(bobIdentityKeyStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobIdentityKeyStore.getIdentityKeyPair().getPublicKey());
aliceSessionBuilder.process(bobPreKey);
}
public void testRepeatBundleMessageV2() throws InvalidKeyException, UntrustedIdentityException, InvalidVersionException, InvalidMessageException, InvalidKeyIdException, DuplicateMessageException, LegacyMessageException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
0, null, null,
bobStore.getIdentityKeyPair().getPublicKey());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(22, new SignedPreKeyRecord(22, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
aliceSessionBuilder.process(bobPreKey);
String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessageOne = aliceSessionCipher.encrypt(originalMessage.getBytes());
CiphertextMessage outgoingMessageTwo = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessageOne.getType() == CiphertextMessage.PREKEY_TYPE);
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(outgoingMessageOne.serialize());
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = bobSessionCipher.decrypt(incomingMessage);
assertTrue(originalMessage.equals(new String(plaintext)));
CiphertextMessage bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
byte[] alicePlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobOutgoingMessage.serialize()));
assertTrue(originalMessage.equals(new String(alicePlaintext)));
// The test
PreKeyWhisperMessage incomingMessageTwo = new PreKeyWhisperMessage(outgoingMessageTwo.serialize());
plaintext = bobSessionCipher.decrypt(incomingMessageTwo);
assertTrue(originalMessage.equals(new String(plaintext)));
bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
alicePlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobOutgoingMessage.serialize()));
assertTrue(originalMessage.equals(new String(alicePlaintext)));
}
public void testRepeatBundleMessageV3() throws InvalidKeyException, UntrustedIdentityException, InvalidVersionException, InvalidMessageException, InvalidKeyIdException, DuplicateMessageException, LegacyMessageException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(22, new SignedPreKeyRecord(22, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
aliceSessionBuilder.process(bobPreKey);
String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessageOne = aliceSessionCipher.encrypt(originalMessage.getBytes());
CiphertextMessage outgoingMessageTwo = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessageOne.getType() == CiphertextMessage.PREKEY_TYPE);
assertTrue(outgoingMessageTwo.getType() == CiphertextMessage.PREKEY_TYPE);
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(outgoingMessageOne.serialize());
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = bobSessionCipher.decrypt(incomingMessage);
assertTrue(originalMessage.equals(new String(plaintext)));
CiphertextMessage bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
byte[] alicePlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobOutgoingMessage.serialize()));
assertTrue(originalMessage.equals(new String(alicePlaintext)));
// The test
PreKeyWhisperMessage incomingMessageTwo = new PreKeyWhisperMessage(outgoingMessageTwo.serialize());
plaintext = bobSessionCipher.decrypt(new PreKeyWhisperMessage(incomingMessageTwo.serialize()));
assertTrue(originalMessage.equals(new String(plaintext)));
bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
alicePlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobOutgoingMessage.serialize()));
assertTrue(originalMessage.equals(new String(alicePlaintext)));
}
public void testBadMessageBundle() throws InvalidKeyException, UntrustedIdentityException, InvalidVersionException, InvalidMessageException, DuplicateMessageException, LegacyMessageException, InvalidKeyIdException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(22, new SignedPreKeyRecord(22, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
aliceSessionBuilder.process(bobPreKey);
String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessageOne = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessageOne.getType() == CiphertextMessage.PREKEY_TYPE);
byte[] goodMessage = outgoingMessageOne.serialize();
byte[] badMessage = new byte[goodMessage.length];
System.arraycopy(goodMessage, 0, badMessage, 0, badMessage.length);
badMessage[badMessage.length-10] ^= 0x01;
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(badMessage);
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = new byte[0];
try {
plaintext = bobSessionCipher.decrypt(incomingMessage);
throw new AssertionError("Decrypt should have failed!");
} catch (InvalidMessageException e) {
// good.
}
assertTrue(bobStore.containsPreKey(31337));
plaintext = bobSessionCipher.decrypt(new PreKeyWhisperMessage(goodMessage));
assertTrue(originalMessage.equals(new String(plaintext)));
assertTrue(!bobStore.containsPreKey(31337));
}
public void testBasicKeyExchange() throws InvalidKeyException, LegacyMessageException, InvalidMessageException, DuplicateMessageException, UntrustedIdentityException, StaleKeyExchangeException, InvalidVersionException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
SessionBuilder bobSessionBuilder = new SessionBuilder(bobStore, ALICE_RECIPIENT_ID, 1);
KeyExchangeMessage aliceKeyExchangeMessage = aliceSessionBuilder.process();
assertTrue(aliceKeyExchangeMessage != null);
byte[] aliceKeyExchangeMessageBytes = aliceKeyExchangeMessage.serialize();
KeyExchangeMessage bobKeyExchangeMessage = bobSessionBuilder.process(new KeyExchangeMessage(aliceKeyExchangeMessageBytes));
assertTrue(bobKeyExchangeMessage != null);
byte[] bobKeyExchangeMessageBytes = bobKeyExchangeMessage.serialize();
KeyExchangeMessage response = aliceSessionBuilder.process(new KeyExchangeMessage(bobKeyExchangeMessageBytes));
assertTrue(response == null);
assertTrue(aliceStore.containsSession(BOB_RECIPIENT_ID, 1));
assertTrue(bobStore.containsSession(ALICE_RECIPIENT_ID, 1));
runInteraction(aliceStore, bobStore);
aliceStore = new InMemoryAxolotlStore();
aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
aliceKeyExchangeMessage = aliceSessionBuilder.process();
try {
bobKeyExchangeMessage = bobSessionBuilder.process(aliceKeyExchangeMessage);
throw new AssertionError("This identity shouldn't be trusted!");
} catch (UntrustedIdentityException uie) {
bobStore.saveIdentity(ALICE_RECIPIENT_ID, aliceKeyExchangeMessage.getIdentityKey());
bobKeyExchangeMessage = bobSessionBuilder.process(aliceKeyExchangeMessage);
}
assertTrue(aliceSessionBuilder.process(bobKeyExchangeMessage) == null);
runInteraction(aliceStore, bobStore);
}
public void testSimultaneousKeyExchange()
throws InvalidKeyException, DuplicateMessageException, LegacyMessageException, InvalidMessageException, UntrustedIdentityException, StaleKeyExchangeException, NoSessionException {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
SessionBuilder bobSessionBuilder = new SessionBuilder(bobStore, ALICE_RECIPIENT_ID, 1);
KeyExchangeMessage aliceKeyExchange = aliceSessionBuilder.process();
KeyExchangeMessage bobKeyExchange = bobSessionBuilder.process();
assertTrue(aliceKeyExchange != null);
assertTrue(bobKeyExchange != null);
KeyExchangeMessage aliceResponse = aliceSessionBuilder.process(bobKeyExchange);
KeyExchangeMessage bobResponse = bobSessionBuilder.process(aliceKeyExchange);
assertTrue(aliceResponse != null);
assertTrue(bobResponse != null);
KeyExchangeMessage aliceAck = aliceSessionBuilder.process(bobResponse);
KeyExchangeMessage bobAck = bobSessionBuilder.process(aliceResponse);
assertTrue(aliceAck == null);
assertTrue(bobAck == null);
runInteraction(aliceStore, bobStore);
}
public void testOptionalOneTimePreKey() throws Exception {
AxolotlStore aliceStore = new InMemoryAxolotlStore();
SessionBuilder aliceSessionBuilder = new SessionBuilder(aliceStore, BOB_RECIPIENT_ID, 1);
AxolotlStore bobStore = new InMemoryAxolotlStore();
ECKeyPair bobPreKeyPair = Curve.generateKeyPair();
ECKeyPair bobSignedPreKeyPair = Curve.generateKeyPair();
byte[] bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize());
PreKeyBundle bobPreKey = new PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
0, null,
22, bobSignedPreKeyPair.getPublicKey(),
bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey());
aliceSessionBuilder.process(bobPreKey);
assertTrue(aliceStore.containsSession(BOB_RECIPIENT_ID, 1));
assertTrue(aliceStore.loadSession(BOB_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3);
String originalMessage = "L'homme est condamné à être libre";
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
CiphertextMessage outgoingMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(outgoingMessage.getType() == CiphertextMessage.PREKEY_TYPE);
PreKeyWhisperMessage incomingMessage = new PreKeyWhisperMessage(outgoingMessage.serialize());
assertTrue(!incomingMessage.getPreKeyId().isPresent());
bobStore.storePreKey(31337, new PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair));
bobStore.storeSignedPreKey(22, new SignedPreKeyRecord(22, System.currentTimeMillis(), bobSignedPreKeyPair, bobSignedPreKeySignature));
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
byte[] plaintext = bobSessionCipher.decrypt(incomingMessage);
assertTrue(bobStore.containsSession(ALICE_RECIPIENT_ID, 1));
assertTrue(bobStore.loadSession(ALICE_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3);
assertTrue(bobStore.loadSession(ALICE_RECIPIENT_ID, 1).getSessionState().getAliceBaseKey() != null);
assertTrue(originalMessage.equals(new String(plaintext)));
}
private void runInteraction(AxolotlStore aliceStore, AxolotlStore bobStore)
throws DuplicateMessageException, LegacyMessageException, InvalidMessageException, NoSessionException
{
SessionCipher aliceSessionCipher = new SessionCipher(aliceStore, BOB_RECIPIENT_ID, 1);
SessionCipher bobSessionCipher = new SessionCipher(bobStore, ALICE_RECIPIENT_ID, 1);
String originalMessage = "smert ze smert";
CiphertextMessage aliceMessage = aliceSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(aliceMessage.getType() == CiphertextMessage.WHISPER_TYPE);
byte[] plaintext = bobSessionCipher.decrypt(new WhisperMessage(aliceMessage.serialize()));
assertTrue(new String(plaintext).equals(originalMessage));
CiphertextMessage bobMessage = bobSessionCipher.encrypt(originalMessage.getBytes());
assertTrue(bobMessage.getType() == CiphertextMessage.WHISPER_TYPE);
plaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobMessage.serialize()));
assertTrue(new String(plaintext).equals(originalMessage));
for (int i=0;i<10;i++) {
String loopingMessage = ("What do we mean by saying that existence precedes essence? " +
"We mean that man first of all exists, encounters himself, " +
"surges up in the world--and defines himself aftward. " + i);
CiphertextMessage aliceLoopingMessage = aliceSessionCipher.encrypt(loopingMessage.getBytes());
byte[] loopingPlaintext = bobSessionCipher.decrypt(new WhisperMessage(aliceLoopingMessage.serialize()));
assertTrue(new String(loopingPlaintext).equals(loopingMessage));
}
for (int i=0;i<10;i++) {
String loopingMessage = ("What do we mean by saying that existence precedes essence? " +
"We mean that man first of all exists, encounters himself, " +
"surges up in the world--and defines himself aftward. " + i);
CiphertextMessage bobLoopingMessage = bobSessionCipher.encrypt(loopingMessage.getBytes());
byte[] loopingPlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobLoopingMessage.serialize()));
assertTrue(new String(loopingPlaintext).equals(loopingMessage));
}
Set<Pair<String, CiphertextMessage>> aliceOutOfOrderMessages = new HashSet<>();
for (int i=0;i<10;i++) {
String loopingMessage = ("What do we mean by saying that existence precedes essence? " +
"We mean that man first of all exists, encounters himself, " +
"surges up in the world--and defines himself aftward. " + i);
CiphertextMessage aliceLoopingMessage = aliceSessionCipher.encrypt(loopingMessage.getBytes());
aliceOutOfOrderMessages.add(new Pair<>(loopingMessage, aliceLoopingMessage));
}
for (int i=0;i<10;i++) {
String loopingMessage = ("What do we mean by saying that existence precedes essence? " +
"We mean that man first of all exists, encounters himself, " +
"surges up in the world--and defines himself aftward. " + i);
CiphertextMessage aliceLoopingMessage = aliceSessionCipher.encrypt(loopingMessage.getBytes());
byte[] loopingPlaintext = bobSessionCipher.decrypt(new WhisperMessage(aliceLoopingMessage.serialize()));
assertTrue(new String(loopingPlaintext).equals(loopingMessage));
}
for (int i=0;i<10;i++) {
String loopingMessage = ("You can only desire based on what you know: " + i);
CiphertextMessage bobLoopingMessage = bobSessionCipher.encrypt(loopingMessage.getBytes());
byte[] loopingPlaintext = aliceSessionCipher.decrypt(new WhisperMessage(bobLoopingMessage.serialize()));
assertTrue(new String(loopingPlaintext).equals(loopingMessage));
}
for (Pair<String, CiphertextMessage> aliceOutOfOrderMessage : aliceOutOfOrderMessages) {
byte[] outOfOrderPlaintext = bobSessionCipher.decrypt(new WhisperMessage(aliceOutOfOrderMessage.second().serialize()));
assertTrue(new String(outOfOrderPlaintext).equals(aliceOutOfOrderMessage.first()));
}
}
}
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