Exemple #1
0
        public Pair <RootKey, ChainKey> createChain(ECPublicKey theirRatchetKey, ECKeyPair ourRatchetKey)
        {
            byte[]             sharedSecret       = Curve.calculateAgreement(theirRatchetKey, ourRatchetKey.getPrivateKey());
            byte[]             derivedSecretBytes = kdf.deriveSecrets(sharedSecret, key, Encoding.UTF8.GetBytes("WhisperRatchet"), DerivedRootSecrets.SIZE);
            DerivedRootSecrets derivedSecrets     = new DerivedRootSecrets(derivedSecretBytes);

            RootKey  newRootKey  = new RootKey(kdf, derivedSecrets.getRootKey());
            ChainKey newChainKey = new ChainKey(kdf, derivedSecrets.getChainKey(), 0);

            return(new Pair <RootKey, ChainKey>(newRootKey, newChainKey));
        }
Exemple #2
0
        public Pair<RootKey, ChainKey> createChain(ECPublicKey theirRatchetKey, ECKeyPair ourRatchetKey)
        {
            byte[] sharedSecret = Curve.calculateAgreement(theirRatchetKey, ourRatchetKey.getPrivateKey());
            byte[] derivedSecretBytes = kdf.deriveSecrets(sharedSecret, key, Encoding.UTF8.GetBytes("WhisperRatchet"), DerivedRootSecrets.SIZE);
            DerivedRootSecrets derivedSecrets = new DerivedRootSecrets(derivedSecretBytes);

            RootKey newRootKey = new RootKey(kdf, derivedSecrets.getRootKey());
            ChainKey newChainKey = new ChainKey(kdf, derivedSecrets.getChainKey(), 0);

            return new Pair<RootKey, ChainKey>(newRootKey, newChainKey);
        }
 internal DerivedKeys(RootKey rootKey, ChainKey chainKey)
 {
     this.rootKey  = rootKey;
     this.chainKey = chainKey;
 }
        public void testRootKeyDerivationV2()
        {
            byte[] rootKeySeed =
            {
                0x7b, 0xa6, 0xde, 0xbc, 0x2b,
                0xc1, 0xbb, 0xf9, 0x1a, 0xbb,
                0xc1, 0x36, 0x74, 0x04, 0x17,
                0x6c, 0xa6, 0x23, 0x09, 0x5b,
                0x7e, 0xc6, 0x6b, 0x45, 0xf6,
                0x02, 0xd9, 0x35, 0x38, 0x94,
                0x2d, 0xcc
            };

            byte[] alicePublic =
            {
                0x05, 0xee, 0x4f, 0xa6, 0xcd,
                0xc0, 0x30, 0xdf, 0x49, 0xec,
                0xd0, 0xba, 0x6c, 0xfc, 0xff,
                0xb2, 0x33, 0xd3, 0x65, 0xa2,
                0x7f, 0xad, 0xbe, 0xff, 0x77,
                0xe9, 0x63, 0xfc, 0xb1, 0x62,
                0x22, 0xe1, 0x3a
            };

            byte[] alicePrivate =
            {
                0x21, 0x68, 0x22, 0xec, 0x67,
                0xeb, 0x38, 0x04, 0x9e, 0xba,
                0xe7, 0xb9, 0x39, 0xba, 0xea,
                0xeb, 0xb1, 0x51, 0xbb, 0xb3,
                0x2d, 0xb8, 0x0f, 0xd3, 0x89,
                0x24, 0x5a, 0xc3, 0x7a, 0x94,
                0x8e, 0x50
            };

            byte[] bobPublic =
            {
                0x05, 0xab, 0xb8, 0xeb, 0x29,
                0xcc, 0x80, 0xb4, 0x71, 0x09,
                0xa2, 0x26, 0x5a, 0xbe, 0x97,
                0x98, 0x48, 0x54, 0x06, 0xe3,
                0x2d, 0xa2, 0x68, 0x93, 0x4a,
                0x95, 0x55, 0xe8, 0x47, 0x57,
                0x70, 0x8a, 0x30
            };

            byte[] nextRoot =
            {
                0xb1, 0x14, 0xf5, 0xde, 0x28,
                0x01, 0x19, 0x85, 0xe6, 0xeb,
                0xa2, 0x5d, 0x50, 0xe7, 0xec,
                0x41, 0xa9, 0xb0, 0x2f, 0x56,
                0x93, 0xc5, 0xc7, 0x88, 0xa6,
                0x3a, 0x06, 0xd2, 0x12, 0xa2,
                0xf7, 0x31
            };

            byte[] nextChain =
            {
                0x9d, 0x7d, 0x24, 0x69, 0xbc,
                0x9a, 0xe5, 0x3e, 0xe9, 0x80,
                0x5a, 0xa3, 0x26, 0x4d, 0x24,
                0x99, 0xa3, 0xac, 0xe8, 0x0f,
                0x4c, 0xca, 0xe2, 0xda, 0x13,
                0x43, 0x0c, 0x5c, 0x55, 0xb5,
                0xca, 0x5f
            };

            ECPublicKey alicePublicKey = Curve.decodePoint(alicePublic, 0);
            ECPrivateKey alicePrivateKey = Curve.decodePrivatePoint(alicePrivate);
            ECKeyPair aliceKeyPair = new ECKeyPair(alicePublicKey, alicePrivateKey);

            ECPublicKey bobPublicKey = Curve.decodePoint(bobPublic, 0);
            RootKey rootKey = new RootKey(HKDF.createFor(2), rootKeySeed);

            Pair<RootKey, ChainKey> rootKeyChainKeyPair = rootKey.createChain(bobPublicKey, aliceKeyPair);
            RootKey nextRootKey = rootKeyChainKeyPair.first();
            ChainKey nextChainKey = rootKeyChainKeyPair.second();

            CollectionAssert.AreEqual(rootKey.getKeyBytes(), rootKeySeed);
            CollectionAssert.AreEqual(nextRootKey.getKeyBytes(), nextRoot);
            CollectionAssert.AreEqual(nextChainKey.getKey(), nextChain);
        }
		public void setRootKey(RootKey rootKey)
		{
			this.sessionStructure = this.sessionStructure.ToBuilder()
														 .SetRootKey(ByteString.CopyFrom(rootKey.getKeyBytes()))
														 .Build();
		}
 internal DerivedKeys(RootKey rootKey, ChainKey chainKey)
 {
     this.rootKey = rootKey;
     this.chainKey = chainKey;
 }