Java Code Examples for org.whispersystems.libsignal.SessionCipher#encrypt()

The following examples show how to use org.whispersystems.libsignal.SessionCipher#encrypt() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SignalServiceCipher.java    From bcm-android with GNU General Public License v3.0 6 votes vote down vote up 
public OutgoingPushMessage encrypt(SignalProtocolAddress destination, byte[] unpaddedMessage, PushPurpose pushPurpose)
    throws UntrustedIdentityException
{
  SessionCipher        sessionCipher        = new SessionCipher(signalProtocolStore, destination);
  PushTransportDetails transportDetails     = new PushTransportDetails(sessionCipher.getSessionVersion());
  CiphertextMessage    message              = sessionCipher.encrypt(transportDetails.getPaddedMessageBody(unpaddedMessage));
  int                  remoteRegistrationId = sessionCipher.getRemoteRegistrationId();
  String               body                 = Base64.encodeBytes(message.serialize());

  int type;

  switch (message.getType()) {
    case CiphertextMessage.PREKEY_TYPE:  type = Type.PREKEY_BUNDLE_VALUE; break;
    case CiphertextMessage.WHISPER_TYPE: type = Type.CIPHERTEXT_VALUE;    break;
    default: throw new AssertionError("Bad type: " + message.getType());
  }

  return new OutgoingPushMessage(type, destination.getDeviceId(), remoteRegistrationId, body, pushPurpose);
}
Example 2
Source File: SmsCipher.java    From Silence with GNU General Public License v3.0 6 votes vote down vote up 
public OutgoingTextMessage encrypt(OutgoingTextMessage message)
  throws NoSessionException, UntrustedIdentityException
{
  byte[] paddedBody      = transportDetails.getPaddedMessageBody(message.getMessageBody().getBytes());
  String recipientNumber = message.getRecipients().getPrimaryRecipient().getNumber();

  if (!signalProtocolStore.containsSession(new SignalProtocolAddress(recipientNumber, 1))) {
    throw new NoSessionException("No session for: " + recipientNumber);
  }

  SessionCipher     cipher            = new SessionCipher(signalProtocolStore, new SignalProtocolAddress(recipientNumber, 1));
  CiphertextMessage ciphertextMessage = cipher.encrypt(paddedBody);
  String            encodedCiphertext = new String(transportDetails.getEncodedMessage(ciphertextMessage.serialize()));

  if (ciphertextMessage.getType() == CiphertextMessage.PREKEY_TYPE) {
    return new OutgoingPrekeyBundleMessage(message, encodedCiphertext);
  } else {
    return message.withBody(encodedCiphertext);
  }
}
Example 3
Source File: MmsCipher.java    From Silence with GNU General Public License v3.0 5 votes vote down vote up 
public SendReq encrypt(Context context, SendReq message)
    throws NoSessionException, RecipientFormattingException, UndeliverableMessageException,
           UntrustedIdentityException
{
  EncodedStringValue[] encodedRecipient = message.getTo();
  String               recipientString  = encodedRecipient[0].getString();
  byte[]               pduBytes         = new PduComposer(context, message).make();

  if (pduBytes == null) {
    throw new UndeliverableMessageException("PDU composition failed, null payload");
  }

  if (!axolotlStore.containsSession(new SignalProtocolAddress(recipientString, 1))) {
    throw new NoSessionException("No session for: " + recipientString);
  }

  SessionCipher     cipher            = new SessionCipher(axolotlStore, new SignalProtocolAddress(recipientString, 1));
  CiphertextMessage ciphertextMessage = cipher.encrypt(pduBytes);
  byte[]            encryptedPduBytes = textTransport.getEncodedMessage(ciphertextMessage.serialize());

  PduBody body         = new PduBody();
  PduPart part         = new PduPart();

  part.setContentId((System.currentTimeMillis()+"").getBytes());
  part.setContentType(ContentType.TEXT_PLAIN.getBytes());
  part.setName((System.currentTimeMillis()+"").getBytes());
  part.setData(encryptedPduBytes);
  body.addPart(part);
  message.setSubject(new EncodedStringValue(WirePrefix.calculateEncryptedMmsSubject()));
  message.setBody(body);

  return message;
}