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Break core ratchet out into libaxolotol.

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1) Break the core cryptography functions out into libaxolotol.

2) The objective for this code is a Java library that isn't
   dependent on any Android functions.  However, while the
   code has been separated from any Android functionality,
   it is still an 'android library project' because of the
   JNI.
This commit is contained in:
Moxie Marlinspike
2014-04-21 08:40:19 -07:00
parent fe3d91c40c
commit d902c12941
115 changed files with 2246 additions and 1017 deletions
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76
libaxolotl/src/androidTest/java/org/whispersystems/test/SessionCipherTest.java Normal file
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package org.whispersystems.test;
import android.test.AndroidTestCase;
import org.whispersystems.libaxolotl.DuplicateMessageException;
import org.whispersystems.libaxolotl.IdentityKey;
import org.whispersystems.libaxolotl.IdentityKeyPair;
import org.whispersystems.libaxolotl.InvalidKeyException;
import org.whispersystems.libaxolotl.InvalidMessageException;
import org.whispersystems.libaxolotl.LegacyMessageException;
import org.whispersystems.libaxolotl.SessionCipher;
import org.whispersystems.libaxolotl.SessionState;
import org.whispersystems.libaxolotl.SessionStore;
import org.whispersystems.libaxolotl.ecc.Curve;
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
import org.whispersystems.libaxolotl.protocol.CiphertextMessage;
import org.whispersystems.libaxolotl.ratchet.RatchetingSession;
import java.util.Arrays;
public class SessionCipherTest extends AndroidTestCase {
public void testBasicSession()
throws InvalidKeyException, DuplicateMessageException,
LegacyMessageException, InvalidMessageException
{
SessionState aliceSessionState = new InMemorySessionState();
SessionState bobSessionState = new InMemorySessionState();
initializeSessions(aliceSessionState, bobSessionState);
SessionStore aliceSessionStore = new InMemorySessionStore(aliceSessionState);
SessionStore bobSessionStore = new InMemorySessionStore(bobSessionState);
SessionCipher aliceCipher = new SessionCipher(aliceSessionStore);
SessionCipher bobCipher = new SessionCipher(bobSessionStore);
byte[] alicePlaintext = "This is a plaintext message.".getBytes();
CiphertextMessage message = aliceCipher.encrypt(alicePlaintext);
byte[] bobPlaintext = bobCipher.decrypt(message.serialize());
assertTrue(Arrays.equals(alicePlaintext, bobPlaintext));
byte[] bobReply = "This is a message from Bob.".getBytes();
CiphertextMessage reply = bobCipher.encrypt(bobReply);
byte[] receivedReply = aliceCipher.decrypt(reply.serialize());
assertTrue(Arrays.equals(bobReply, receivedReply));
}
private void initializeSessions(SessionState aliceSessionState, SessionState bobSessionState)
throws InvalidKeyException
{
ECKeyPair aliceIdentityKeyPair = Curve.generateKeyPair(false);
IdentityKeyPair aliceIdentityKey = new IdentityKeyPair(new IdentityKey(aliceIdentityKeyPair.getPublicKey()),
aliceIdentityKeyPair.getPrivateKey());
ECKeyPair aliceBaseKey = Curve.generateKeyPair(true);
ECKeyPair aliceEphemeralKey = Curve.generateKeyPair(true);
ECKeyPair bobIdentityKeyPair = Curve.generateKeyPair(false);
IdentityKeyPair bobIdentityKey = new IdentityKeyPair(new IdentityKey(bobIdentityKeyPair.getPublicKey()),
bobIdentityKeyPair.getPrivateKey());
ECKeyPair bobBaseKey = Curve.generateKeyPair(true);
ECKeyPair bobEphemeralKey = bobBaseKey;
RatchetingSession.initializeSession(aliceSessionState, aliceBaseKey, bobBaseKey.getPublicKey(),
aliceEphemeralKey, bobEphemeralKey.getPublicKey(),
aliceIdentityKey, bobIdentityKey.getPublicKey());
RatchetingSession.initializeSession(bobSessionState, bobBaseKey, aliceBaseKey.getPublicKey(),
bobEphemeralKey, aliceEphemeralKey.getPublicKey(),
bobIdentityKey, aliceIdentityKey.getPublicKey());
}
}