Esempio n. 1
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        /**
         * Encrypt a message.
         *
         * @param  paddedMessage The plaintext message bytes, optionally padded to a constant multiple.
         * @return A ciphertext message encrypted to the recipient+device tuple.
         */
        public CiphertextMessage Encrypt(byte[] paddedMessage)
        {
            lock (SessionLock)
            {
                SessionRecord sessionRecord   = _sessionStore.LoadSession(_remoteAddress);
                SessionState  sessionState    = sessionRecord.GetSessionState();
                ChainKey      chainKey        = sessionState.GetSenderChainKey();
                MessageKeys   messageKeys     = chainKey.GetMessageKeys();
                IEcPublicKey  senderEphemeral = sessionState.GetSenderRatchetKey();
                uint          previousCounter = sessionState.GetPreviousCounter();
                uint          sessionVersion  = sessionState.GetSessionVersion();

                byte[]            ciphertextBody    = GetCiphertext(sessionVersion, messageKeys, paddedMessage);
                CiphertextMessage ciphertextMessage = new SignalMessage(sessionVersion, messageKeys.GetMacKey(),
                                                                        senderEphemeral, chainKey.GetIndex(),
                                                                        previousCounter, ciphertextBody,
                                                                        sessionState.GetLocalIdentityKey(),
                                                                        sessionState.GetRemoteIdentityKey());

                if (sessionState.HasUnacknowledgedPreKeyMessage())
                {
                    SessionState.UnacknowledgedPreKeyMessageItems items = sessionState.GetUnacknowledgedPreKeyMessageItems();
                    uint localRegistrationId = sessionState.GetLocalRegistrationId();

                    ciphertextMessage = new PreKeySignalMessage(sessionVersion, localRegistrationId, items.GetPreKeyId(),
                                                                items.GetSignedPreKeyId(), items.GetBaseKey(),
                                                                sessionState.GetLocalIdentityKey(),
                                                                (SignalMessage)ciphertextMessage);
                }

                sessionState.SetSenderChainKey(chainKey.GetNextChainKey());
                _sessionStore.StoreSession(_remoteAddress, sessionRecord);
                return(ciphertextMessage);
            }
        }
        public void T_GetRandomKey_WithParams()
        {
            WordGenerator gen    = InitSimpleWordGen();
            ChainMap      subMap = new ChainMap();
            ChainKey      key1   = new ChainKey(new string[] { "key1", "key2", "key3" });
            ChainKey      key2   = new ChainKey(new string[] { "key1", "key2", "key4" });

            subMap.AddToChain(key1, "val1");
            subMap.AddToChain(key2, "val2");
            bool key1Found, key2Found;

            key1Found = key2Found = false;

            for (int i = 0; i < 10; i++)
            {
                ChainKey currKey = gen.GetRandomKey(subMap);
                if (key1.Equals(currKey))
                {
                    key1Found = true;
                }
                else if (key2.Equals(currKey))
                {
                    key2Found = true;
                }
                else
                {
                    Assert.Fail("Invalid key returned");
                }
            }
            if (!(key1Found && key2Found))
            {
                Assert.Fail("GetRandomKey is not random");
            }
        }
Esempio n. 3
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        private MessageKeys GetOrCreateMessageKeys(SessionState sessionState,
                                                   IEcPublicKey theirEphemeral,
                                                   ChainKey chainKey, uint counter)

        {
            if (chainKey.GetIndex() > counter)
            {
                if (sessionState.HasMessageKeys(theirEphemeral, counter))
                {
                    return(sessionState.RemoveMessageKeys(theirEphemeral, counter));
                }
                else
                {
                    throw new DuplicateMessageException($"Received message with old counter: {chainKey.GetIndex()}  , {counter}");
                }
            }

            //Avoiding a uint overflow
            uint chainKeyIndex = chainKey.GetIndex();

            if ((counter > chainKeyIndex) && (counter - chainKeyIndex > 2000))
            {
                throw new InvalidMessageException("Over 2000 messages into the future!");
            }

            while (chainKey.GetIndex() < counter)
            {
                MessageKeys messageKeys = chainKey.GetMessageKeys();
                sessionState.SetMessageKeys(theirEphemeral, messageKeys);
                chainKey = chainKey.GetNextChainKey();
            }

            sessionState.SetReceiverChainKey(theirEphemeral, chainKey.GetNextChainKey());
            return(chainKey.GetMessageKeys());
        }
Esempio n. 4
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        private byte[] decrypt(SessionState sessionState, WhisperMessage ciphertextMessage)
        {
            if (!sessionState.hasSenderChain())
            {
                throw new InvalidMessageException("Uninitialized session!");
            }

            if (ciphertextMessage.getMessageVersion() != sessionState.getSessionVersion())
            {
                throw new InvalidMessageException($"Message version {ciphertextMessage.getMessageVersion()}, but session version {sessionState.getSessionVersion()}");
            }

            uint        messageVersion = ciphertextMessage.getMessageVersion();
            ECPublicKey theirEphemeral = ciphertextMessage.getSenderRatchetKey();
            uint        counter        = ciphertextMessage.getCounter();
            ChainKey    chainKey       = getOrCreateChainKey(sessionState, theirEphemeral);
            MessageKeys messageKeys    = getOrCreateMessageKeys(sessionState, theirEphemeral,
                                                                chainKey, counter);

            ciphertextMessage.verifyMac(messageVersion,
                                        sessionState.getRemoteIdentityKey(),
                                        sessionState.getLocalIdentityKey(),
                                        messageKeys.getMacKey());

            byte[] plaintext = getPlaintext(messageVersion, messageKeys, ciphertextMessage.getBody());

            sessionState.clearUnacknowledgedPreKeyMessage();

            return(plaintext);
        }
Esempio n. 5
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        private MessageKeys getOrCreateMessageKeys(SessionState sessionState,
                                                   ECPublicKey theirEphemeral,
                                                   ChainKey chainKey, uint counter)

        {
            if (chainKey.getIndex() > counter)
            {
                if (sessionState.hasMessageKeys(theirEphemeral, counter))
                {
                    return(sessionState.removeMessageKeys(theirEphemeral, counter));
                }
                else
                {
                    throw new DuplicateMessageException($"Received message with old counter: {chainKey.getIndex()}  , {counter}");
                }
            }

            if (counter - chainKey.getIndex() > 2000)
            {
                throw new InvalidMessageException("Over 2000 messages into the future!");
            }

            while (chainKey.getIndex() < counter)
            {
                MessageKeys messageKeys = chainKey.getMessageKeys();
                sessionState.setMessageKeys(theirEphemeral, messageKeys);
                chainKey = chainKey.getNextChainKey();
            }

            sessionState.setReceiverChainKey(theirEphemeral, chainKey.getNextChainKey());
            return(chainKey.getMessageKeys());
        }
Esempio n. 6
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        /**
         * Encrypt a message.
         *
         * @param  paddedMessage The plaintext message bytes, optionally padded to a constant multiple.
         * @return A ciphertext message encrypted to the recipient+device tuple.
         */
        public CiphertextMessage encrypt(byte[] paddedMessage)
        {
            lock (SESSION_LOCK)
            {
                SessionRecord sessionRecord   = sessionStore.loadSession(remoteAddress);
                SessionState  sessionState    = sessionRecord.getSessionState();
                ChainKey      chainKey        = sessionState.getSenderChainKey();
                MessageKeys   messageKeys     = chainKey.getMessageKeys();
                ECPublicKey   senderEphemeral = sessionState.getSenderRatchetKey();
                uint          previousCounter = sessionState.getPreviousCounter();
                uint          sessionVersion  = sessionState.getSessionVersion();

                byte[]            ciphertextBody    = getCiphertext(sessionVersion, messageKeys, paddedMessage);
                CiphertextMessage ciphertextMessage = new WhisperMessage(sessionVersion, messageKeys.getMacKey(),
                                                                         senderEphemeral, chainKey.getIndex(),
                                                                         previousCounter, ciphertextBody,
                                                                         sessionState.getLocalIdentityKey(),
                                                                         sessionState.getRemoteIdentityKey());

                if (sessionState.hasUnacknowledgedPreKeyMessage())
                {
                    SessionState.UnacknowledgedPreKeyMessageItems items = sessionState.getUnacknowledgedPreKeyMessageItems();
                    uint localRegistrationId = sessionState.getLocalRegistrationId();

                    ciphertextMessage = new PreKeyWhisperMessage(sessionVersion, localRegistrationId, items.getPreKeyId(),
                                                                 items.getSignedPreKeyId(), items.getBaseKey(),
                                                                 sessionState.getLocalIdentityKey(),
                                                                 (WhisperMessage)ciphertextMessage);
                }

                sessionState.setSenderChainKey(chainKey.getNextChainKey());
                sessionStore.storeSession(remoteAddress, sessionRecord);
                return(ciphertextMessage);
            }
        }
Esempio n. 7
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        public void T_GetHashCode_SimpleDifferent()
        {
            ChainKey ck1 = new ChainKey(new string[] { "", "this" });
            ChainKey ck2 = new ChainKey(new string[] { "do", "this" });

            Assert.AreNotEqual(ck1.GetHashCode(), ck2.GetHashCode());
        }
Esempio n. 8
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        private byte[] Decrypt(SessionState sessionState, SignalMessage ciphertextMessage)
        {
            if (!sessionState.HasSenderChain())
            {
                throw new InvalidMessageException("Uninitialized session!");
            }

            if (sessionState.GetStructure().SenderChain.SenderRatchetKey.Length <= 0)
            {
                throw new InvalidMessageException("SenderRatchetKey is empty!");
            }

            if (ciphertextMessage.GetMessageVersion() != sessionState.GetSessionVersion())
            {
                throw new InvalidMessageException($"Message version {ciphertextMessage.GetMessageVersion()}, but session version {sessionState.GetSessionVersion()}");
            }

            IEcPublicKey theirEphemeral = ciphertextMessage.GetSenderRatchetKey();
            uint         counter        = ciphertextMessage.GetCounter();
            ChainKey     chainKey       = GetOrCreateChainKey(sessionState, theirEphemeral);
            MessageKeys  messageKeys    = GetOrCreateMessageKeys(sessionState, theirEphemeral,
                                                                 chainKey, counter);

            ciphertextMessage.VerifyMac(sessionState.GetRemoteIdentityKey(),
                                        sessionState.GetLocalIdentityKey(),
                                        messageKeys.GetMacKey());

            byte[] plaintext = GetPlaintext(messageKeys, ciphertextMessage.GetBody());

            sessionState.ClearUnacknowledgedPreKeyMessage();

            return(plaintext);
        }
Esempio n. 9
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 /// <summary>
 /// Ratchets the a chain key.
 /// Does this by appending 0x02 to and hashing the current key
 /// And icrementing the chainkeyIndex
 /// </summary>
 /// <param name="key">Key.</param>
 public static void RatchetChainKey(ChainKey key)
 {
     lock (key)
     {
         key.key = AdvanceKey(key.key);
         key.index++;
     }
 }
Esempio n. 10
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 /// <summary>
 /// Initializes a new instance of the <see cref="T:Coflnet.EndToEncEncrypt"/> class.
 /// </summary>
 /// <param name="sessionReceiveKey">Session receive key.</param>
 /// <param name="sessionSendKey">Session send key.</param>
 /// <param name="identifier">Identifier of the other resource.</param>
 /// <param name="isServer">If set to <c>true</c> the current machine is the server (didn't start the connection).</param>
 /// <param name="hasReceived">If set to <c>true</c> has received.</param>
 public EndToEndEncrypt(ChainKey sessionReceiveKey, ChainKey sessionSendKey, EntityId identifier, bool isServer, bool hasReceived)
 {
     this.sessionReceiveKey = sessionReceiveKey;
     this.sessionSendKey    = sessionSendKey;
     this.identifier        = identifier;
     this.isServer          = isServer;
     this.hasReceived       = hasReceived;
 }
Esempio n. 11
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 public void AppendChain(ChainKey child, int clock)
 {
     //int parentLength = this.Length;
     foreach (KeyValuePair <int, DffBitRecord> bitKeyEntry in child)
     {
         this.keys[bitKeyEntry.Key + clock] = bitKeyEntry.Value;
     }
 }
        public void testChainKeyDerivationV3()
        {
            byte[] seed =
            {
                0x8a, 0xb7, 0x2d, 0x6f, 0x4c,
                0xc5, 0xac, 0x0d, 0x38, 0x7e,
                0xaf, 0x46, 0x33, 0x78, 0xdd,
                0xb2, 0x8e, 0xdd, 0x07, 0x38,
                0x5b, 0x1c, 0xb0, 0x12, 0x50,
                0xc7, 0x15, 0x98, 0x2e, 0x7a,
                0xd4, 0x8f
            };

            byte[] messageKey =
            {
                /* 0x02*/
                0xbf, 0x51, 0xe9, 0xd7,
                0x5e, 0x0e, 0x31, 0x03, 0x10,
                0x51, 0xf8, 0x2a, 0x24, 0x91,
                0xff, 0xc0, 0x84, 0xfa, 0x29,
                0x8b, 0x77, 0x93, 0xbd, 0x9d,
                0xb6, 0x20, 0x05, 0x6f, 0xeb,
                0xf4, 0x52, 0x17
            };

            byte[] macKey =
            {
                0xc6, 0xc7, 0x7d, 0x6a, 0x73,
                0xa3, 0x54, 0x33, 0x7a, 0x56,
                0x43, 0x5e, 0x34, 0x60, 0x7d,
                0xfe, 0x48, 0xe3, 0xac, 0xe1,
                0x4e, 0x77, 0x31, 0x4d, 0xc6,
                0xab, 0xc1, 0x72, 0xe7, 0xa7,
                0x03, 0x0b
            };

            byte[] nextChainKey =
            {
                0x28, 0xe8, 0xf8, 0xfe, 0xe5,
                0x4b, 0x80, 0x1e, 0xef, 0x7c,
                0x5c, 0xfb, 0x2f, 0x17, 0xf3,
                0x2c, 0x7b, 0x33, 0x44, 0x85,
                0xbb, 0xb7, 0x0f, 0xac, 0x6e,
                0xc1, 0x03, 0x42, 0xa2, 0x46,
                0xd1, 0x5d
            };

            ChainKey chainKey = new ChainKey(HKDF.createFor(3), seed, 0);

            CollectionAssert.AreEqual(seed, chainKey.getKey());
            CollectionAssert.AreEqual(messageKey, chainKey.getMessageKeys().getCipherKey());
            CollectionAssert.AreEqual(macKey, chainKey.getMessageKeys().getMacKey());
            CollectionAssert.AreEqual(nextChainKey, chainKey.getNextChainKey().getKey());
            Assert.AreEqual <uint>(0, chainKey.getIndex());
            Assert.AreEqual <uint>(0, chainKey.getMessageKeys().getCounter());
            Assert.AreEqual <uint>(1, chainKey.getNextChainKey().getIndex());
            Assert.AreEqual <uint>(1, chainKey.getNextChainKey().getMessageKeys().getCounter());
        }
Esempio n. 13
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        public void testChainKeyDerivationV3()
        {
            byte[] seed =
            {
                (byte)0x8a, (byte)0xb7, (byte)0x2d, (byte)0x6f, (byte)0x4c,
                (byte)0xc5, (byte)0xac, (byte)0x0d, (byte)0x38, (byte)0x7e,
                (byte)0xaf, (byte)0x46, (byte)0x33, (byte)0x78, (byte)0xdd,
                (byte)0xb2, (byte)0x8e, (byte)0xdd, (byte)0x07, (byte)0x38,
                (byte)0x5b, (byte)0x1c, (byte)0xb0, (byte)0x12, (byte)0x50,
                (byte)0xc7, (byte)0x15, (byte)0x98, (byte)0x2e, (byte)0x7a,
                (byte)0xd4, (byte)0x8f
            };

            byte[] messageKey =
            {
                /* (byte) 0x02*/
                (byte)0xbf, (byte)0x51, (byte)0xe9, (byte)0xd7,
                (byte)0x5e, (byte)0x0e, (byte)0x31, (byte)0x03,(byte)0x10,
                (byte)0x51, (byte)0xf8, (byte)0x2a, (byte)0x24,(byte)0x91,
                (byte)0xff, (byte)0xc0, (byte)0x84, (byte)0xfa,(byte)0x29,
                (byte)0x8b, (byte)0x77, (byte)0x93, (byte)0xbd,(byte)0x9d,
                (byte)0xb6, (byte)0x20, (byte)0x05, (byte)0x6f,(byte)0xeb,
                (byte)0xf4, (byte)0x52, (byte)0x17
            };

            byte[] macKey =
            {
                (byte)0xc6, (byte)0xc7, (byte)0x7d, (byte)0x6a, (byte)0x73,
                (byte)0xa3, (byte)0x54, (byte)0x33, (byte)0x7a, (byte)0x56,
                (byte)0x43, (byte)0x5e, (byte)0x34, (byte)0x60, (byte)0x7d,
                (byte)0xfe, (byte)0x48, (byte)0xe3, (byte)0xac, (byte)0xe1,
                (byte)0x4e, (byte)0x77, (byte)0x31, (byte)0x4d, (byte)0xc6,
                (byte)0xab, (byte)0xc1, (byte)0x72, (byte)0xe7, (byte)0xa7,
                (byte)0x03, (byte)0x0b
            };

            byte[] nextChainKey =
            {
                (byte)0x28, (byte)0xe8, (byte)0xf8, (byte)0xfe, (byte)0xe5,
                (byte)0x4b, (byte)0x80, (byte)0x1e, (byte)0xef, (byte)0x7c,
                (byte)0x5c, (byte)0xfb, (byte)0x2f, (byte)0x17, (byte)0xf3,
                (byte)0x2c, (byte)0x7b, (byte)0x33, (byte)0x44, (byte)0x85,
                (byte)0xbb, (byte)0xb7, (byte)0x0f, (byte)0xac, (byte)0x6e,
                (byte)0xc1, (byte)0x03, (byte)0x42, (byte)0xa2, (byte)0x46,
                (byte)0xd1, (byte)0x5d
            };

            ChainKey chainKey = new ChainKey(HKDF.createFor(3), seed, 0);

            Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(chainKey.getKey(), seed));
            Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(chainKey.getMessageKeys().getCipherKey(), messageKey));
            Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(chainKey.getMessageKeys().getMacKey(), macKey));
            Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(chainKey.getNextChainKey().getKey(), nextChainKey));
            Assert.IsTrue(chainKey.getIndex() == 0);
            Assert.IsTrue(chainKey.getMessageKeys().getCounter() == 0);
            Assert.IsTrue(chainKey.getNextChainKey().getIndex() == 1);
            Assert.IsTrue(chainKey.getNextChainKey().getMessageKeys().getCounter() == 1);
        }
Esempio n. 14
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        public void T_Equal()
        {
            ChainKey ck        = new ChainKey(new string[] { "word1", "word2" });
            ChainKey ckEqual   = new ChainKey(new string[] { "word1", "word2" });
            ChainKey ckReverse = new ChainKey(new string[] { "word2", "word1" });

            Assert.AreEqual(ck, ckEqual);
            Assert.AreNotEqual(ck, ckReverse);
        }
        public void testChainKeyDerivationV2()
        {
            byte[] seed =
            {
                0x8a, 0xb7, 0x2d, 0x6f, 0x4c,
                0xc5, 0xac, 0x0d, 0x38, 0x7e,
                0xaf, 0x46, 0x33, 0x78, 0xdd,
                0xb2, 0x8e, 0xdd, 0x07, 0x38,
                0x5b, 0x1c, 0xb0, 0x12, 0x50,
                0xc7, 0x15, 0x98, 0x2e, 0x7a,
                0xd4, 0x8f
            };

            byte[] messageKey =
            {
                0x02, 0xa9, 0xaa, 0x6c, 0x7d,
                0xbd, 0x64, 0xf9, 0xd3, 0xaa,
                0x92, 0xf9, 0x2a, 0x27, 0x7b,
                0xf5, 0x46, 0x09, 0xda, 0xdf,
                0x0b, 0x00, 0x82, 0x8a, 0xcf,
                0xc6, 0x1e, 0x3c, 0x72, 0x4b,
                0x84, 0xa7
            };

            byte[] macKey =
            {
                0xbf, 0xbe, 0x5e, 0xfb, 0x60,
                0x30, 0x30, 0x52, 0x67, 0x42,
                0xe3, 0xee, 0x89, 0xc7, 0x02,
                0x4e, 0x88, 0x4e, 0x44, 0x0f,
                0x1f, 0xf3, 0x76, 0xbb, 0x23,
                0x17, 0xb2, 0xd6, 0x4d, 0xeb,
                0x7c, 0x83
            };

            byte[] nextChainKey =
            {
                0x28, 0xe8, 0xf8, 0xfe, 0xe5,
                0x4b, 0x80, 0x1e, 0xef, 0x7c,
                0x5c, 0xfb, 0x2f, 0x17, 0xf3,
                0x2c, 0x7b, 0x33, 0x44, 0x85,
                0xbb, 0xb7, 0x0f, 0xac, 0x6e,
                0xc1, 0x03, 0x42, 0xa2, 0x46,
                0xd1, 0x5d
            };

            ChainKey chainKey = new ChainKey(HKDF.createFor(2), seed, 0);

            Assert.AreEqual(seed, chainKey.getKey());
            CollectionAssert.AreEqual(messageKey, chainKey.getMessageKeys().getCipherKey());
            CollectionAssert.AreEqual(macKey, chainKey.getMessageKeys().getMacKey());
            CollectionAssert.AreEqual(nextChainKey, chainKey.getNextChainKey().getKey());
            Assert.AreEqual <uint>(0, chainKey.getIndex());
            Assert.AreEqual <uint>(0, chainKey.getMessageKeys().getCounter());
            Assert.AreEqual <uint>(1, chainKey.getNextChainKey().getIndex());
            Assert.AreEqual <uint>(1, chainKey.getNextChainKey().getMessageKeys().getCounter());
        }
Esempio n. 16
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        public void T_GetHashCode_OrderMatters()
        {
            ChainKey ck        = new ChainKey(new string[] { "word1", "word2" });
            ChainKey ckEqual   = new ChainKey(new string[] { "word1", "word2" });
            ChainKey ckReverse = new ChainKey(new string[] { "word2", "word1" });

            Assert.AreEqual(ck.GetHashCode(), ckEqual.GetHashCode());
            Assert.AreNotEqual(ck.GetHashCode(), ckReverse.GetHashCode());
        }
        public void SetSenderChainKey(ChainKey nextChainKey)
        {
            SessionStructure.Types.Chain.Types.ChainKey chainKey = new SessionStructure.Types.Chain.Types.ChainKey
            {
                Key   = ByteString.CopyFrom(nextChainKey.GetKey()),
                Index = nextChainKey.GetIndex()
            };

            _sessionStructure.SenderChain.ChainKey = chainKey;
        }
Esempio n. 18
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        public void setSenderChainKey(ChainKey nextChainKey)
        {
            Chain.Types.ChainKey chainKey = Chain.Types.ChainKey.CreateBuilder()
                                            .SetKey(ByteString.CopyFrom(nextChainKey.getKey()))
                                            .SetIndex(nextChainKey.getIndex())
                                            .Build();

            Chain chain = sessionStructure.SenderChain.ToBuilder()
                          .SetChainKey(chainKey).Build();

            this.sessionStructure = this.sessionStructure.ToBuilder().SetSenderChain(chain).Build();
        }
Esempio n. 19
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        public void SetSenderChainKey(ChainKey nextChainKey)
        {
            StorageProtos.SessionStructure.Types.Chain.Types.ChainKey chainKey = StorageProtos.SessionStructure.Types.Chain.Types.ChainKey.CreateBuilder()
                                                                                 .SetKey(ByteString.CopyFrom(nextChainKey.GetKey()))
                                                                                 .SetIndex(nextChainKey.GetIndex())
                                                                                 .Build();

            StorageProtos.SessionStructure.Types.Chain chain = _sessionStructure.SenderChain.ToBuilder()
                                                               .SetChainKey(chainKey).Build();

            _sessionStructure = _sessionStructure.ToBuilder().SetSenderChain(chain).Build();
        }
Esempio n. 20
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        public void SetSenderChain(EcKeyPair senderRatchetKeyPair, ChainKey chainKey)
        {
            StorageProtos.SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = StorageProtos.SessionStructure.Types.Chain.Types.ChainKey.CreateBuilder()
                                                                                          .SetKey(ByteString.CopyFrom(chainKey.GetKey()))
                                                                                          .SetIndex(chainKey.GetIndex())
                                                                                          .Build();

            StorageProtos.SessionStructure.Types.Chain senderChain = StorageProtos.SessionStructure.Types.Chain.CreateBuilder()
                                                                     .SetSenderRatchetKey(ByteString.CopyFrom(senderRatchetKeyPair.GetPublicKey().Serialize()))
                                                                     .SetSenderRatchetKeyPrivate(ByteString.CopyFrom(senderRatchetKeyPair.GetPrivateKey().Serialize()))
                                                                     .SetChainKey(chainKeyStructure)
                                                                     .Build();

            _sessionStructure = _sessionStructure.ToBuilder().SetSenderChain(senderChain).Build();
        }
Esempio n. 21
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        public void setSenderChain(ECKeyPair senderRatchetKeyPair, ChainKey chainKey)
        {
            Chain.Types.ChainKey chainKeyStructure = Chain.Types.ChainKey.CreateBuilder()
                                                     .SetKey(ByteString.CopyFrom(chainKey.getKey()))
                                                     .SetIndex(chainKey.getIndex())
                                                     .Build();

            Chain senderChain = Chain.CreateBuilder()
                                .SetSenderRatchetKey(ByteString.CopyFrom(senderRatchetKeyPair.getPublicKey().serialize()))
                                .SetSenderRatchetKeyPrivate(ByteString.CopyFrom(senderRatchetKeyPair.getPrivateKey().serialize()))
                                .SetChainKey(chainKeyStructure)
                                .Build();

            this.sessionStructure = this.sessionStructure.ToBuilder().SetSenderChain(senderChain).Build();
        }
        public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey)
        {
            Pair <Chain, uint> chainAndIndex = getReceiverChain(senderEphemeral);
            Chain chain = chainAndIndex.first();

            Chain.Types.ChainKey chainKeyStructure = new Chain.Types.ChainKey
            {
                Key   = ByteString.CopyFrom(chainKey.getKey()),
                Index = chainKey.getIndex()
            };

            chain.ChainKey = chainKeyStructure;

            sessionStructure.ReceiverChains[(int)chainAndIndex.second()] = chain;
        }
        public void SetReceiverChainKey(IEcPublicKey senderEphemeral, ChainKey chainKey)
        {
            Pair <SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);

            SessionStructure.Types.Chain chain = chainAndIndex.First();

            SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = new SessionStructure.Types.Chain.Types.ChainKey
            {
                Key   = ByteString.CopyFrom(chainKey.GetKey()),
                Index = chainKey.GetIndex()
            };

            chain.ChainKey = chainKeyStructure;

            _sessionStructure.ReceiverChains[(int)chainAndIndex.Second()] = chain;
        }
Esempio n. 24
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        public void setReceiverChainKey(ECPublicKey senderEphemeral, ChainKey chainKey)
        {
            Pair <Chain, uint> chainAndIndex = getReceiverChain(senderEphemeral);
            Chain chain = chainAndIndex.first();

            Chain.Types.ChainKey chainKeyStructure = Chain.Types.ChainKey.CreateBuilder()
                                                     .SetKey(ByteString.CopyFrom(chainKey.getKey()))
                                                     .SetIndex(chainKey.getIndex())
                                                     .Build();

            Chain updatedChain = chain.ToBuilder().SetChainKey(chainKeyStructure).Build();

            this.sessionStructure = this.sessionStructure.ToBuilder()
                                    .SetReceiverChains((int)chainAndIndex.second(), updatedChain)                      // TODO: conv
                                    .Build();
        }
        public void SetSenderChain(EcKeyPair senderRatchetKeyPair, ChainKey chainKey)
        {
            SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = new SessionStructure.Types.Chain.Types.ChainKey
            {
                Key   = ByteString.CopyFrom(chainKey.GetKey()),
                Index = chainKey.GetIndex()
            };

            SessionStructure.Types.Chain senderChain = new SessionStructure.Types.Chain
            {
                SenderRatchetKey        = ByteString.CopyFrom(senderRatchetKeyPair.GetPublicKey().Serialize()),
                SenderRatchetKeyPrivate = ByteString.CopyFrom(senderRatchetKeyPair.GetPrivateKey().Serialize()),
                ChainKey = chainKeyStructure
            };

            _sessionStructure.SenderChain = senderChain;
        }
Esempio n. 26
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        public void SetReceiverChainKey(IEcPublicKey senderEphemeral, ChainKey chainKey)
        {
            Pair <StorageProtos.SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);

            StorageProtos.SessionStructure.Types.Chain chain = chainAndIndex.First();

            StorageProtos.SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = StorageProtos.SessionStructure.Types.Chain.Types.ChainKey.CreateBuilder()
                                                                                          .SetKey(ByteString.CopyFrom(chainKey.GetKey()))
                                                                                          .SetIndex(chainKey.GetIndex())
                                                                                          .Build();

            StorageProtos.SessionStructure.Types.Chain updatedChain = chain.ToBuilder().SetChainKey(chainKeyStructure).Build();

            _sessionStructure = _sessionStructure.ToBuilder()
                                .SetReceiverChains((int)chainAndIndex.Second(), updatedChain)                                                                                  // TODO: conv
                                .Build();
        }
        public void setSenderChain(ECKeyPair senderRatchetKeyPair, ChainKey chainKey)
        {
            Chain.Types.ChainKey chainKeyStructure = new Chain.Types.ChainKey
            {
                Key   = ByteString.CopyFrom(chainKey.getKey()),
                Index = chainKey.getIndex()
            };

            Chain senderChain = new Chain
            {
                SenderRatchetKey        = ByteString.CopyFrom(senderRatchetKeyPair.getPublicKey().serialize()),
                SenderRatchetKeyPrivate = ByteString.CopyFrom(senderRatchetKeyPair.getPrivateKey().serialize()),
                ChainKey = chainKeyStructure
            };

            this.sessionStructure.SenderChain = senderChain;
        }
Esempio n. 28
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        public void addReceiverChain(ECPublicKey senderRatchetKey, ChainKey chainKey)
        {
            Chain.Types.ChainKey chainKeyStructure = Chain.Types.ChainKey.CreateBuilder()
                                                     .SetKey(ByteString.CopyFrom(chainKey.getKey()))
                                                     .SetIndex(chainKey.getIndex())
                                                     .Build();

            Chain chain = Chain.CreateBuilder()
                          .SetChainKey(chainKeyStructure)
                          .SetSenderRatchetKey(ByteString.CopyFrom(senderRatchetKey.serialize()))
                          .Build();

            this.sessionStructure = this.sessionStructure.ToBuilder().AddReceiverChains(chain).Build();

            if (this.sessionStructure.ReceiverChainsList.Count > 5)
            {
                this.sessionStructure = this.sessionStructure.ToBuilder() /*.ClearReceiverChains()*/.Build(); //RemoveReceiverChains(0) TODO: why does it work without
            }
        }
        public void addReceiverChain(ECPublicKey senderRatchetKey, ChainKey chainKey)
        {
            Chain.Types.ChainKey chainKeyStructure = Chain.Types.ChainKey.CreateBuilder()
                                                     .SetKey(ByteString.CopyFrom(chainKey.getKey()))
                                                     .SetIndex(chainKey.getIndex())
                                                     .Build();

            Chain chain = Chain.CreateBuilder()
                          .SetChainKey(chainKeyStructure)
                          .SetSenderRatchetKey(ByteString.CopyFrom(senderRatchetKey.serialize()))
                          .Build();

            sessionStructure = sessionStructure.ToBuilder().AddReceiverChains(chain).Build();

            if (sessionStructure.ReceiverChainsList.Count > 5)
            {
                sessionStructure = sessionStructure.ToBuilder().Build();
            }
        }
        /**
         * Encrypt a message.
         *
         * @param  paddedMessage The plaintext message bytes, optionally padded to a constant multiple.
         * @return A ciphertext message encrypted to the recipient+device tuple.
         */
        public CiphertextMessage encrypt(byte[] paddedMessage)
        {
            lock (SESSION_LOCK)
            {
                SessionRecord sessionRecord   = sessionStore.LoadSession(remoteAddress);
                SessionState  sessionState    = sessionRecord.getSessionState();
                ChainKey      chainKey        = sessionState.getSenderChainKey();
                MessageKeys   messageKeys     = chainKey.getMessageKeys();
                ECPublicKey   senderEphemeral = sessionState.getSenderRatchetKey();
                uint          previousCounter = sessionState.getPreviousCounter();
                uint          sessionVersion  = sessionState.getSessionVersion();

                byte[]            ciphertextBody    = getCiphertext(messageKeys, paddedMessage);
                CiphertextMessage ciphertextMessage = new SignalMessage(sessionVersion, messageKeys.getMacKey(),
                                                                        senderEphemeral, chainKey.getIndex(),
                                                                        previousCounter, ciphertextBody,
                                                                        sessionState.getLocalIdentityKey(),
                                                                        sessionState.getRemoteIdentityKey());

                if (sessionState.hasUnacknowledgedPreKeyMessage())
                {
                    SessionState.UnacknowledgedPreKeyMessageItems items = sessionState.getUnacknowledgedPreKeyMessageItems();
                    uint localRegistrationId = sessionState.GetLocalRegistrationId();

                    ciphertextMessage = new PreKeySignalMessage(sessionVersion, localRegistrationId, items.getPreKeyId(),
                                                                items.getSignedPreKeyId(), items.getBaseKey(),
                                                                sessionState.getLocalIdentityKey(),
                                                                (SignalMessage)ciphertextMessage);
                }

                sessionState.setSenderChainKey(chainKey.getNextChainKey());

                if (!identityKeyStore.IsTrustedIdentity(remoteAddress, sessionState.getRemoteIdentityKey(), Direction.SENDING))
                {
                    throw new UntrustedIdentityException(remoteAddress.Name, sessionState.getRemoteIdentityKey());
                }

                identityKeyStore.SaveIdentity(remoteAddress, sessionState.getRemoteIdentityKey());

                sessionStore.StoreSession(remoteAddress, sessionRecord);
                return(ciphertextMessage);
            }
        }