List of usage examples for java.math BigInteger modPow
public BigInteger modPow(BigInteger exponent, BigInteger m)
(thisexponent mod m). From source file:test.integ.be.fedict.commons.eid.client.JCATest.java
@Test public void testPSSPrefix() throws Exception { Security.addProvider(new BeIDProvider()); Security.addProvider(new BouncyCastleProvider()); KeyStore keyStore = KeyStore.getInstance("BeID"); keyStore.load(null);// www . ja v a 2 s.co m PrivateKey authnPrivateKey = (PrivateKey) keyStore.getKey("Authentication", null); X509Certificate authnCertificate = (X509Certificate) keyStore.getCertificate("Authentication"); PublicKey authnPublicKey = authnCertificate.getPublicKey(); Signature signature = Signature.getInstance("SHA1withRSAandMGF1"); signature.initSign(authnPrivateKey); byte[] toBeSigned = "hello world".getBytes(); signature.update(toBeSigned); byte[] signatureValue = signature.sign(); signature.initVerify(authnPublicKey); signature.update(toBeSigned); boolean result = signature.verify(signatureValue); assertTrue(result); RSAPublicKey rsaPublicKey = (RSAPublicKey) authnPublicKey; BigInteger signatureValueBigInteger = new BigInteger(signatureValue); BigInteger messageBigInteger = signatureValueBigInteger.modPow(rsaPublicKey.getPublicExponent(), rsaPublicKey.getModulus()); String paddedMessage = new String(Hex.encodeHex(messageBigInteger.toByteArray())); LOG.debug("padded message: " + paddedMessage); assertTrue(paddedMessage.endsWith("bc")); }
From source file:acp.sdk.SecureUtil.java
/** * /* www . jav a2s . co m*/ * @param tPIN * @param iPan * @param publicKey * @return */ public String assymEncrypt(String tPIN, String iPan, RSAPublicKey publicKey) { System.out.println("SampleHashMap::assymEncrypt([" + tPIN + "])"); System.out.println("SampleHashMap::assymEncrypt(PIN =[" + tPIN + "])"); try { int tKeyLength = 1024; int tBlockSize = tKeyLength / 8; byte[] tTemp = null; tTemp = SecureUtil.pin2PinBlockWithCardNO(tPIN, iPan); tTemp = addPKCS1Padding(tTemp, tBlockSize); BigInteger tPlainText = new BigInteger(tTemp); BigInteger tCipherText = tPlainText.modPow(publicKey.getPublicExponent(), publicKey.getModulus()); byte[] tCipherBytes = tCipherText.toByteArray(); int tCipherLength = tCipherBytes.length; if (tCipherLength > tBlockSize) { byte[] tTempBytes = new byte[tBlockSize]; System.arraycopy(tCipherBytes, tCipherLength - tBlockSize, tTempBytes, 0, tBlockSize); tCipherBytes = tTempBytes; } else if (tCipherLength < tBlockSize) { byte[] tTempBytes = new byte[tBlockSize]; for (int i = 0; i < tBlockSize - tCipherLength; i++) { tTempBytes[i] = 0x00; } System.arraycopy(tCipherBytes, 0, tTempBytes, tBlockSize - tCipherLength, tCipherLength); tCipherBytes = tTempBytes; } String tEncryptPIN = new String(SecureUtil.base64Encode(tCipherBytes)); System.out.println("SampleHashMap::assymEncrypt(EncryptCardNo =[" + tEncryptPIN + "])"); return tEncryptPIN; } catch (Exception e) { e.printStackTrace(System.out); return tPIN; } catch (Error e) { e.printStackTrace(System.out); return tPIN; } }
From source file:org.jmangos.realm.network.packet.auth.client.CMD_AUTH_LOGON_CHALLENGE.java
@Override protected void readImpl() throws BufferUnderflowException, RuntimeException { readC();//from w w w.ja v a2s . c om if (readC() == WoWAuthResponse.WOW_SUCCESS.getMessageId()) { final SecureRandom random = new SecureRandom(); MessageDigest sha = null; try { sha = MessageDigest.getInstance("SHA-1"); } catch (final NoSuchAlgorithmException e) { e.printStackTrace(); return; } final BigInteger k = new BigInteger("3"); final byte[] Bb = readB(32); final BigInteger g = new BigInteger(readB(readC())); final byte[] Nb = readB(readC()); final byte[] saltb = readB(32); /* byte[] unk3 = */readB(16); readC(); ArrayUtils.reverse(Bb); final BigInteger B = new BigInteger(1, Bb); ArrayUtils.reverse(Bb); ArrayUtils.reverse(Nb); final BigInteger N = new BigInteger(1, Nb); ArrayUtils.reverse(Nb); final BigInteger a = new BigInteger(1, random.generateSeed(19)); final byte[] passhash = sha.digest(this.config.AUTH_LOGIN.toUpperCase().concat(":") .concat(this.config.AUTH_PASSWORD.toUpperCase()).getBytes(Charset.forName("UTF-8"))); sha.update(saltb); sha.update(passhash); final byte[] xhash = sha.digest(); ArrayUtils.reverse(xhash); final BigInteger x = new BigInteger(1, xhash); logger.debug("x:" + x.toString(16).toUpperCase()); final BigInteger v = g.modPow(x, N); logger.debug("v:" + v.toString(16).toUpperCase()); final BigInteger A = g.modPow(a, N); logger.debug("A:" + A.toString(16).toUpperCase()); logger.debug("B:" + B.toString(16).toUpperCase()); this.ahash = A.toByteArray(); ArrayUtils.reverse(this.ahash); sha.update(this.ahash); sha.update(Bb); final byte[] hashu = sha.digest(); ArrayUtils.reverse(hashu); final BigInteger u = new BigInteger(1, hashu); logger.debug("u:" + u.toString(16).toUpperCase()); final BigInteger S = (B.subtract(k.multiply(g.modPow(x, N)))).modPow(a.add(u.multiply(x)), N); final byte[] full_S = S.toByteArray(); ArrayUtils.reverse(full_S); logger.debug("t:" + StringUtils.toHexString(full_S)); final byte[] s1_hash = new byte[16]; final byte[] s2_hash = new byte[16]; for (int i = 0; i < 16; i++) { s1_hash[i] = full_S[i * 2]; s2_hash[i] = full_S[(i * 2) + 1]; } final byte[] t1 = sha.digest(s1_hash); final byte[] t2 = sha.digest(s2_hash); final byte[] vK = new byte[40]; for (int i = 0; i < 20; i++) { vK[i * 2] = t1[i]; vK[(i * 2) + 1] = t2[i]; } byte[] hash = new byte[20]; logger.debug("N:" + N.toString(16).toUpperCase()); hash = sha.digest(Nb); logger.debug("hash:" + new BigInteger(1, hash).toString(16).toUpperCase()); byte[] gH = new byte[20]; sha.update(g.toByteArray()); gH = sha.digest(); for (int i = 0; i < 20; ++i) { hash[i] ^= gH[i]; } byte[] t4 = new byte[20]; t4 = sha.digest(this.config.AUTH_LOGIN.toUpperCase().getBytes(Charset.forName("UTF-8"))); sha.update(hash); logger.debug("hash:" + StringUtils.toHexString(hash)); sha.update(t4); logger.debug("t4:" + StringUtils.toHexString(t4)); sha.update(saltb); logger.debug("saltb:" + StringUtils.toHexString(saltb)); sha.update(this.ahash); logger.debug("ahash:" + StringUtils.toHexString(this.ahash)); sha.update(Bb); logger.debug("Bb:" + StringUtils.toHexString(Bb)); sha.update(vK); logger.debug("vK:" + StringUtils.toHexString(vK)); this.m1 = sha.digest(); sha.update(this.ahash); sha.update(this.m1); sha.update(vK); logger.debug("m1 value" + StringUtils.toHexString(this.m1)); @SuppressWarnings("unused") final byte[] m2 = sha.digest(); final ChannelPipeline pipeline = getClient().getChannel().getPipeline(); ((RealmToAuthChannelHandler) pipeline.getLast()).setSeed(vK); } else { getChannel().getPipeline().remove("handler"); getChannel().getPipeline().remove("eventlog"); getChannel().getPipeline().remove("executor"); getChannel().close(); getChannel().getFactory().releaseExternalResources(); } }
From source file:com.ferdi2005.secondgram.voip.VoIPService.java
private void startOutgoingCall() { configureDeviceForCall();//from w ww . j a va 2s . c om showNotification(); startConnectingSound(); dispatchStateChanged(STATE_REQUESTING); AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { NotificationCenter.getInstance().postNotificationName(NotificationCenter.didStartedCall); } }); final byte[] salt = new byte[256]; Utilities.random.nextBytes(salt); TLRPC.TL_messages_getDhConfig req = new TLRPC.TL_messages_getDhConfig(); req.random_length = 256; req.version = MessagesStorage.lastSecretVersion; callReqId = ConnectionsManager.getInstance().sendRequest(req, new RequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { callReqId = 0; if (error == null) { TLRPC.messages_DhConfig res = (TLRPC.messages_DhConfig) response; if (response instanceof TLRPC.TL_messages_dhConfig) { if (!Utilities.isGoodPrime(res.p, res.g)) { callFailed(); return; } MessagesStorage.secretPBytes = res.p; MessagesStorage.secretG = res.g; MessagesStorage.lastSecretVersion = res.version; MessagesStorage.getInstance().saveSecretParams(MessagesStorage.lastSecretVersion, MessagesStorage.secretG, MessagesStorage.secretPBytes); } final byte[] salt = new byte[256]; for (int a = 0; a < 256; a++) { salt[a] = (byte) ((byte) (Utilities.random.nextDouble() * 256) ^ res.random[a]); } BigInteger i_g_a = BigInteger.valueOf(MessagesStorage.secretG); i_g_a = i_g_a.modPow(new BigInteger(1, salt), new BigInteger(1, MessagesStorage.secretPBytes)); byte[] g_a = i_g_a.toByteArray(); if (g_a.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(g_a, 1, correctedAuth, 0, 256); g_a = correctedAuth; } TLRPC.TL_phone_requestCall reqCall = new TLRPC.TL_phone_requestCall(); reqCall.user_id = MessagesController.getInputUser(user); reqCall.protocol = new TLRPC.TL_phoneCallProtocol(); reqCall.protocol.udp_p2p = reqCall.protocol.udp_reflector = true; reqCall.protocol.min_layer = CALL_MIN_LAYER; reqCall.protocol.max_layer = CALL_MAX_LAYER; VoIPService.this.g_a = g_a; reqCall.g_a_hash = Utilities.computeSHA256(g_a, 0, g_a.length); reqCall.random_id = Utilities.random.nextInt(); ConnectionsManager.getInstance().sendRequest(reqCall, new RequestDelegate() { @Override public void run(final TLObject response, final TLRPC.TL_error error) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { if (error == null) { call = ((TLRPC.TL_phone_phoneCall) response).phone_call; a_or_b = salt; dispatchStateChanged(STATE_WAITING); if (endCallAfterRequest) { hangUp(); return; } if (pendingUpdates.size() > 0 && call != null) { for (TLRPC.PhoneCall call : pendingUpdates) { onCallUpdated(call); } pendingUpdates.clear(); } timeoutRunnable = new Runnable() { @Override public void run() { timeoutRunnable = null; TLRPC.TL_phone_discardCall req = new TLRPC.TL_phone_discardCall(); req.peer = new TLRPC.TL_inputPhoneCall(); req.peer.access_hash = call.access_hash; req.peer.id = call.id; req.reason = new TLRPC.TL_phoneCallDiscardReasonMissed(); ConnectionsManager.getInstance().sendRequest(req, new RequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { if (error != null) { FileLog.e( "error on phone.discardCall: " + error); } else { FileLog.d("phone.discardCall " + response); } AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { callFailed(); } }); } }, ConnectionsManager.RequestFlagFailOnServerErrors); } }; AndroidUtilities.runOnUIThread(timeoutRunnable, MessagesController.getInstance().callReceiveTimeout); } else { if (error.code == 400 && "PARTICIPANT_VERSION_OUTDATED".equals(error.text)) { callFailed(VoIPController.ERROR_PEER_OUTDATED); } else if (error.code == 403 && "USER_PRIVACY_RESTRICTED".equals(error.text)) { callFailed(VoIPController.ERROR_PRIVACY); } else if (error.code == 406) { callFailed(VoIPController.ERROR_LOCALIZED); } else { FileLog.e("Error on phone.requestCall: " + error); callFailed(); } } } }); } }, ConnectionsManager.RequestFlagFailOnServerErrors); } else { FileLog.e("Error on getDhConfig " + error); callFailed(); } } }, ConnectionsManager.RequestFlagFailOnServerErrors); }
From source file:com.ferdi2005.secondgram.voip.VoIPService.java
public void acceptIncomingCall() { stopRinging();/*w w w .j a v a 2s. c o m*/ showNotification(); configureDeviceForCall(); startConnectingSound(); dispatchStateChanged(STATE_EXCHANGING_KEYS); AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { NotificationCenter.getInstance().postNotificationName(NotificationCenter.didStartedCall); } }); TLRPC.TL_messages_getDhConfig req = new TLRPC.TL_messages_getDhConfig(); req.random_length = 256; req.version = MessagesStorage.lastSecretVersion; ConnectionsManager.getInstance().sendRequest(req, new RequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { if (error == null) { TLRPC.messages_DhConfig res = (TLRPC.messages_DhConfig) response; if (response instanceof TLRPC.TL_messages_dhConfig) { if (!Utilities.isGoodPrime(res.p, res.g)) { /*acceptingChats.remove(encryptedChat.id); declineSecretChat(encryptedChat.id);*/ FileLog.e("stopping VoIP service, bad prime"); callFailed(); return; } MessagesStorage.secretPBytes = res.p; MessagesStorage.secretG = res.g; MessagesStorage.lastSecretVersion = res.version; MessagesStorage.getInstance().saveSecretParams(MessagesStorage.lastSecretVersion, MessagesStorage.secretG, MessagesStorage.secretPBytes); } byte[] salt = new byte[256]; for (int a = 0; a < 256; a++) { salt[a] = (byte) ((byte) (Utilities.random.nextDouble() * 256) ^ res.random[a]); } a_or_b = salt; BigInteger g_b = BigInteger.valueOf(MessagesStorage.secretG); BigInteger p = new BigInteger(1, MessagesStorage.secretPBytes); g_b = g_b.modPow(new BigInteger(1, salt), p); g_a_hash = call.g_a_hash; byte[] g_b_bytes = g_b.toByteArray(); if (g_b_bytes.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(g_b_bytes, 1, correctedAuth, 0, 256); g_b_bytes = correctedAuth; } TLRPC.TL_phone_acceptCall req = new TLRPC.TL_phone_acceptCall(); req.g_b = g_b_bytes; //req.key_fingerprint = Utilities.bytesToLong(authKeyId); req.peer = new TLRPC.TL_inputPhoneCall(); req.peer.id = call.id; req.peer.access_hash = call.access_hash; req.protocol = new TLRPC.TL_phoneCallProtocol(); req.protocol.udp_p2p = req.protocol.udp_reflector = true; req.protocol.min_layer = CALL_MIN_LAYER; req.protocol.max_layer = CALL_MAX_LAYER; ConnectionsManager.getInstance().sendRequest(req, new RequestDelegate() { @Override public void run(final TLObject response, final TLRPC.TL_error error) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { if (error == null) { FileLog.w("accept call ok! " + response); call = ((TLRPC.TL_phone_phoneCall) response).phone_call; if (call instanceof TLRPC.TL_phoneCallDiscarded) { onCallUpdated(call); } /*else{ initiateActualEncryptedCall(); }*/ } else { FileLog.e("Error on phone.acceptCall: " + error); callFailed(); } } }); } }, ConnectionsManager.RequestFlagFailOnServerErrors); } else { //acceptingChats.remove(encryptedChat.id); callFailed(); } } }); }
From source file:com.ferdi2005.secondgram.voip.VoIPService.java
private void processAcceptedCall() { dispatchStateChanged(STATE_EXCHANGING_KEYS); BigInteger p = new BigInteger(1, MessagesStorage.secretPBytes); BigInteger i_authKey = new BigInteger(1, call.g_b); if (!Utilities.isGoodGaAndGb(i_authKey, p)) { FileLog.w("stopping VoIP service, bad Ga and Gb"); callFailed();/*from w w w .j a v a 2 s.c om*/ return; } i_authKey = i_authKey.modPow(new BigInteger(1, a_or_b), p); byte[] authKey = i_authKey.toByteArray(); if (authKey.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, authKey.length - 256, correctedAuth, 0, 256); authKey = correctedAuth; } else if (authKey.length < 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, 0, correctedAuth, 256 - authKey.length, authKey.length); for (int a = 0; a < 256 - authKey.length; a++) { authKey[a] = 0; } authKey = correctedAuth; } byte[] authKeyHash = Utilities.computeSHA1(authKey); byte[] authKeyId = new byte[8]; System.arraycopy(authKeyHash, authKeyHash.length - 8, authKeyId, 0, 8); long fingerprint = Utilities.bytesToLong(authKeyId); this.authKey = authKey; keyFingerprint = fingerprint; TLRPC.TL_phone_confirmCall req = new TLRPC.TL_phone_confirmCall(); req.g_a = g_a; req.key_fingerprint = fingerprint; req.peer = new TLRPC.TL_inputPhoneCall(); req.peer.id = call.id; req.peer.access_hash = call.access_hash; req.protocol = new TLRPC.TL_phoneCallProtocol(); req.protocol.max_layer = CALL_MAX_LAYER; req.protocol.min_layer = CALL_MIN_LAYER; req.protocol.udp_p2p = req.protocol.udp_reflector = true; ConnectionsManager.getInstance().sendRequest(req, new RequestDelegate() { @Override public void run(final TLObject response, final TLRPC.TL_error error) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { if (error != null) { callFailed(); } else { call = ((TLRPC.TL_phone_phoneCall) response).phone_call; initiateActualEncryptedCall(); } } }); } }); }
From source file:com.ferdi2005.secondgram.voip.VoIPService.java
public void onCallUpdated(TLRPC.PhoneCall call) { if (this.call == null) { pendingUpdates.add(call);/*from w w w.j a va2 s. c o m*/ return; } if (call == null) return; if (call.id != this.call.id) { if (BuildVars.DEBUG_VERSION) FileLog.w("onCallUpdated called with wrong call id (got " + call.id + ", expected " + this.call.id + ")"); return; } if (call.access_hash == 0) call.access_hash = this.call.access_hash; if (BuildVars.DEBUG_VERSION) { FileLog.d("Call updated: " + call); dumpCallObject(); } this.call = call; if (call instanceof TLRPC.TL_phoneCallDiscarded) { needSendDebugLog = call.need_debug; FileLog.d("call discarded, stopping service"); if (call.reason instanceof TLRPC.TL_phoneCallDiscardReasonBusy) { dispatchStateChanged(STATE_BUSY); playingSound = true; soundPool.play(spBusyId, 1, 1, 0, -1, 1); AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { soundPool.release(); if (isBtHeadsetConnected) ((AudioManager) ApplicationLoader.applicationContext.getSystemService(AUDIO_SERVICE)) .stopBluetoothSco(); } }, 2500); stopSelf(); } else { callEnded(); } if (call.need_rating) { startRatingActivity(); } } else if (call instanceof TLRPC.TL_phoneCall && authKey == null) { if (call.g_a_or_b == null) { FileLog.w("stopping VoIP service, Ga == null"); callFailed(); return; } if (!Arrays.equals(g_a_hash, Utilities.computeSHA256(call.g_a_or_b, 0, call.g_a_or_b.length))) { FileLog.w("stopping VoIP service, Ga hash doesn't match"); callFailed(); return; } g_a = call.g_a_or_b; BigInteger g_a = new BigInteger(1, call.g_a_or_b); BigInteger p = new BigInteger(1, MessagesStorage.secretPBytes); if (!Utilities.isGoodGaAndGb(g_a, p)) { FileLog.w("stopping VoIP service, bad Ga and Gb (accepting)"); callFailed(); return; } g_a = g_a.modPow(new BigInteger(1, a_or_b), p); byte[] authKey = g_a.toByteArray(); if (authKey.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, authKey.length - 256, correctedAuth, 0, 256); authKey = correctedAuth; } else if (authKey.length < 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, 0, correctedAuth, 256 - authKey.length, authKey.length); for (int a = 0; a < 256 - authKey.length; a++) { authKey[a] = 0; } authKey = correctedAuth; } byte[] authKeyHash = Utilities.computeSHA1(authKey); byte[] authKeyId = new byte[8]; System.arraycopy(authKeyHash, authKeyHash.length - 8, authKeyId, 0, 8); VoIPService.this.authKey = authKey; keyFingerprint = Utilities.bytesToLong(authKeyId); if (keyFingerprint != call.key_fingerprint) { FileLog.w("key fingerprints don't match"); callFailed(); return; } initiateActualEncryptedCall(); } else if (call instanceof TLRPC.TL_phoneCallAccepted && authKey == null) { processAcceptedCall(); } else { if (currentState == STATE_WAITING && call.receive_date != 0) { dispatchStateChanged(STATE_RINGING); FileLog.d("!!!!!! CALL RECEIVED"); if (spPlayID != 0) soundPool.stop(spPlayID); spPlayID = soundPool.play(spRingbackID, 1, 1, 0, -1, 1); if (timeoutRunnable != null) { AndroidUtilities.cancelRunOnUIThread(timeoutRunnable); timeoutRunnable = null; } timeoutRunnable = new Runnable() { @Override public void run() { timeoutRunnable = null; declineIncomingCall(DISCARD_REASON_MISSED, null); } }; AndroidUtilities.runOnUIThread(timeoutRunnable, MessagesController.getInstance().callRingTimeout); } } }
From source file:org.telegram.messenger.MessagesController.java
public void acceptSecretChat(final TLRPC.EncryptedChat encryptedChat) { if (acceptingChats.get(encryptedChat.id) != null) { return;/*from w w w .j a v a2 s .c om*/ } acceptingChats.put(encryptedChat.id, encryptedChat); TLRPC.TL_messages_getDhConfig req = new TLRPC.TL_messages_getDhConfig(); req.random_length = 256; req.version = MessagesStorage.lastSecretVersion; ConnectionsManager.Instance.performRpc(req, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { if (error == null) { TLRPC.messages_DhConfig res = (TLRPC.messages_DhConfig) response; if (response instanceof TLRPC.TL_messages_dhConfig) { if (!Utilities.isGoodPrime(res.p, res.g)) { acceptingChats.remove(encryptedChat.id); declineSecretChat(encryptedChat.id); return; } MessagesStorage.secretPBytes = res.p; MessagesStorage.secretG = res.g; MessagesStorage.lastSecretVersion = res.version; MessagesStorage.Instance.saveSecretParams(MessagesStorage.lastSecretVersion, MessagesStorage.secretG, MessagesStorage.secretPBytes); } byte[] salt = new byte[256]; for (int a = 0; a < 256; a++) { salt[a] = (byte) ((byte) (random.nextDouble() * 256) ^ res.random[a]); } encryptedChat.a_or_b = salt; BigInteger p = new BigInteger(1, MessagesStorage.secretPBytes); BigInteger g_b = BigInteger.valueOf(MessagesStorage.secretG); g_b = g_b.modPow(new BigInteger(1, salt), p); BigInteger g_a = new BigInteger(1, encryptedChat.g_a); if (!Utilities.isGoodGaAndGb(g_a, p)) { acceptingChats.remove(encryptedChat.id); declineSecretChat(encryptedChat.id); return; } byte[] g_b_bytes = g_b.toByteArray(); if (g_b_bytes.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(g_b_bytes, 1, correctedAuth, 0, 256); g_b_bytes = correctedAuth; } g_a = g_a.modPow(new BigInteger(1, salt), p); byte[] authKey = g_a.toByteArray(); if (authKey.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, authKey.length - 256, correctedAuth, 0, 256); authKey = correctedAuth; } else if (authKey.length < 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, 0, correctedAuth, 256 - authKey.length, authKey.length); for (int a = 0; a < 256 - authKey.length; a++) { authKey[a] = 0; } authKey = correctedAuth; } byte[] authKeyHash = Utilities.computeSHA1(authKey); byte[] authKeyId = new byte[8]; System.arraycopy(authKeyHash, authKeyHash.length - 8, authKeyId, 0, 8); encryptedChat.auth_key = authKey; TLRPC.TL_messages_acceptEncryption req2 = new TLRPC.TL_messages_acceptEncryption(); req2.g_b = g_b_bytes; req2.peer = new TLRPC.TL_inputEncryptedChat(); req2.peer.chat_id = encryptedChat.id; req2.peer.access_hash = encryptedChat.access_hash; req2.key_fingerprint = Utilities.bytesToLong(authKeyId); ConnectionsManager.Instance.performRpc(req2, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { acceptingChats.remove(encryptedChat.id); if (error == null) { final TLRPC.EncryptedChat newChat = (TLRPC.EncryptedChat) response; newChat.auth_key = encryptedChat.auth_key; newChat.user_id = encryptedChat.user_id; MessagesStorage.Instance.updateEncryptedChat(newChat); Utilities.RunOnUIThread(new Runnable() { @Override public void run() { encryptedChats.put(newChat.id, newChat); NotificationCenter.Instance.postNotificationName(encryptedChatUpdated, newChat); } }); } } }, null, true, RPCRequest.RPCRequestClassGeneric); } else { acceptingChats.remove(encryptedChat.id); } } }, null, true, RPCRequest.RPCRequestClassGeneric); }
From source file:org.telegram.messenger.MessagesController.java
public void startSecretChat(final Context context, final TLRPC.User user) { if (user == null) { return;/* www. jav a 2 s . c o m*/ } final ProgressDialog progressDialog = new ProgressDialog(context); progressDialog.setMessage(context.getString(R.string.Loading)); progressDialog.setCanceledOnTouchOutside(false); progressDialog.setCancelable(false); progressDialog.show(); TLRPC.TL_messages_getDhConfig req = new TLRPC.TL_messages_getDhConfig(); req.random_length = 256; req.version = MessagesStorage.lastSecretVersion; ConnectionsManager.Instance.performRpc(req, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { if (error == null) { TLRPC.messages_DhConfig res = (TLRPC.messages_DhConfig) response; if (response instanceof TLRPC.TL_messages_dhConfig) { if (!Utilities.isGoodPrime(res.p, res.g)) { Utilities.RunOnUIThread(new Runnable() { @Override public void run() { try { if (!((ActionBarActivity) context).isFinishing()) { progressDialog.dismiss(); } } catch (Exception e) { FileLog.e("tmessages", e); } } }); return; } MessagesStorage.secretPBytes = res.p; MessagesStorage.secretG = res.g; MessagesStorage.lastSecretVersion = res.version; MessagesStorage.Instance.saveSecretParams(MessagesStorage.lastSecretVersion, MessagesStorage.secretG, MessagesStorage.secretPBytes); } final byte[] salt = new byte[256]; for (int a = 0; a < 256; a++) { salt[a] = (byte) ((byte) (random.nextDouble() * 256) ^ res.random[a]); } BigInteger i_g_a = BigInteger.valueOf(MessagesStorage.secretG); i_g_a = i_g_a.modPow(new BigInteger(1, salt), new BigInteger(1, MessagesStorage.secretPBytes)); byte[] g_a = i_g_a.toByteArray(); if (g_a.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(g_a, 1, correctedAuth, 0, 256); g_a = correctedAuth; } TLRPC.TL_messages_requestEncryption req2 = new TLRPC.TL_messages_requestEncryption(); req2.g_a = g_a; req2.user_id = getInputUser(user); req2.random_id = (int) (random.nextDouble() * Integer.MAX_VALUE); ConnectionsManager.Instance.performRpc(req2, new RPCRequest.RPCRequestDelegate() { @Override public void run(final TLObject response, TLRPC.TL_error error) { if (error == null) { Utilities.RunOnUIThread(new Runnable() { @Override public void run() { if (!((ActionBarActivity) context).isFinishing()) { try { progressDialog.dismiss(); } catch (Exception e) { FileLog.e("tmessages", e); } } TLRPC.EncryptedChat chat = (TLRPC.EncryptedChat) response; chat.user_id = chat.participant_id; encryptedChats.put(chat.id, chat); chat.a_or_b = salt; TLRPC.TL_dialog dialog = new TLRPC.TL_dialog(); dialog.id = ((long) chat.id) << 32; dialog.unread_count = 0; dialog.top_message = 0; dialog.last_message_date = ConnectionsManager.Instance.getCurrentTime(); dialogs_dict.put(dialog.id, dialog); dialogs.add(dialog); dialogsServerOnly.clear(); Collections.sort(dialogs, new Comparator<TLRPC.TL_dialog>() { @Override public int compare(TLRPC.TL_dialog tl_dialog, TLRPC.TL_dialog tl_dialog2) { if (tl_dialog.last_message_date == tl_dialog2.last_message_date) { return 0; } else if (tl_dialog.last_message_date < tl_dialog2.last_message_date) { return 1; } else { return -1; } } }); for (TLRPC.TL_dialog d : dialogs) { if ((int) d.id != 0) { dialogsServerOnly.add(d); } } NotificationCenter.Instance.postNotificationName(dialogsNeedReload); MessagesStorage.Instance.putEncryptedChat(chat, user, dialog); NotificationCenter.Instance.postNotificationName(encryptedChatCreated, chat); } }); } else { Utilities.RunOnUIThread(new Runnable() { @Override public void run() { if (!((ActionBarActivity) context).isFinishing()) { try { progressDialog.dismiss(); } catch (Exception e) { FileLog.e("tmessages", e); } AlertDialog.Builder builder = new AlertDialog.Builder(context); builder.setTitle(context.getString(R.string.AppName)); builder.setMessage(String.format( context.getString(R.string.CreateEncryptedChatOutdatedError), user.first_name, user.first_name)); builder.setPositiveButton( ApplicationLoader.applicationContext.getString(R.string.OK), null); builder.show().setCanceledOnTouchOutside(true); } } }); } } }, null, true, RPCRequest.RPCRequestClassGeneric | RPCRequest.RPCRequestClassFailOnServerErrors); } else { Utilities.RunOnUIThread(new Runnable() { @Override public void run() { if (!((ActionBarActivity) context).isFinishing()) { try { progressDialog.dismiss(); } catch (Exception e) { FileLog.e("tmessages", e); } } } }); } } }, null, true, RPCRequest.RPCRequestClassGeneric | RPCRequest.RPCRequestClassFailOnServerErrors); }
From source file:org.telegram.messenger.MessagesController.java
public void processAcceptedSecretChat(final TLRPC.EncryptedChat encryptedChat) { BigInteger p = new BigInteger(1, MessagesStorage.secretPBytes); BigInteger i_authKey = new BigInteger(1, encryptedChat.g_a_or_b); if (!Utilities.isGoodGaAndGb(i_authKey, p)) { declineSecretChat(encryptedChat.id); return;//from w ww . j a va 2 s . c o m } i_authKey = i_authKey.modPow(new BigInteger(1, encryptedChat.a_or_b), p); byte[] authKey = i_authKey.toByteArray(); if (authKey.length > 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, authKey.length - 256, correctedAuth, 0, 256); authKey = correctedAuth; } else if (authKey.length < 256) { byte[] correctedAuth = new byte[256]; System.arraycopy(authKey, 0, correctedAuth, 256 - authKey.length, authKey.length); for (int a = 0; a < 256 - authKey.length; a++) { authKey[a] = 0; } authKey = correctedAuth; } byte[] authKeyHash = Utilities.computeSHA1(authKey); byte[] authKeyId = new byte[8]; System.arraycopy(authKeyHash, authKeyHash.length - 8, authKeyId, 0, 8); long fingerprint = Utilities.bytesToLong(authKeyId); if (encryptedChat.key_fingerprint == fingerprint) { encryptedChat.auth_key = authKey; MessagesStorage.Instance.updateEncryptedChat(encryptedChat); Utilities.RunOnUIThread(new Runnable() { @Override public void run() { encryptedChats.put(encryptedChat.id, encryptedChat); NotificationCenter.Instance.postNotificationName(encryptedChatUpdated, encryptedChat); } }); } else { final TLRPC.TL_encryptedChatDiscarded newChat = new TLRPC.TL_encryptedChatDiscarded(); newChat.id = encryptedChat.id; newChat.user_id = encryptedChat.user_id; newChat.auth_key = encryptedChat.auth_key; MessagesStorage.Instance.updateEncryptedChat(newChat); Utilities.RunOnUIThread(new Runnable() { @Override public void run() { encryptedChats.put(newChat.id, newChat); NotificationCenter.Instance.postNotificationName(encryptedChatUpdated, newChat); } }); declineSecretChat(encryptedChat.id); } }