Examples of org.keyczar.interfaces.EncryptingStream

   * @param inputLength The length of the input.
   * @return Length of the ciphertext that would be produced.
   * @throws KeyczarException If the key set contains no primary encrypting key.
   */
  public int ciphertextSize(int inputLength) throws KeyczarException {
    EncryptingStream cryptStream = ENCRYPT_QUEUE.poll();
    if (cryptStream == null) {
      KeyczarKey encryptingKey = getPrimaryKey();
      if (encryptingKey == null) {
        throw new NoPrimaryKeyException();
      }
      cryptStream = (EncryptingStream) encryptingKey.getStream();
    }
    SigningStream signStream = cryptStream.getSigningStream();


    int outputSize = HEADER_SIZE + cryptStream.maxOutputSize(inputLength) +
        signStream.digestSize();
    ENCRYPT_QUEUE.add(cryptStream);
    return outputSize;
  }

    LOG.debug(Messages.getString("Encrypter.Encrypting", input.remaining()));
    KeyczarKey encryptingKey = getPrimaryKey();
    if (encryptingKey == null) {
      throw new NoPrimaryKeyException() ;
    }
    EncryptingStream cryptStream = ENCRYPT_QUEUE.poll();
    if (cryptStream == null) {
      cryptStream = (EncryptingStream) encryptingKey.getStream();
    }
    // Initialize the signing stream
    SigningStream signStream = cryptStream.getSigningStream();
    signStream.initSign();


    // Write the key header
    output.mark();
    ByteBuffer outputToSign = output.asReadOnlyBuffer();
    encryptingKey.copyHeader(output);


    // Write the IV. May be an empty array of zero length
    cryptStream.initEncrypt(output);


    ByteBuffer inputCopy = input.asReadOnlyBuffer();
    while (inputCopy.remaining() > ENCRYPT_CHUNK_SIZE) {
      ByteBuffer inputChunk = inputCopy.slice();
      inputChunk.limit(ENCRYPT_CHUNK_SIZE);
      cryptStream.updateEncrypt(inputChunk, output);
      inputCopy.position(inputCopy.position() + ENCRYPT_CHUNK_SIZE);


      outputToSign.limit(output.position());
      signStream.updateSign(outputToSign);
      outputToSign.position(output.position());
    }


    // Sign any remaining plaintext
    cryptStream.doFinalEncrypt(inputCopy, output);
    output.limit(output.position() + signStream.digestSize());


    // Set the limit on the output to sign
    outputToSign.limit(output.position());
    signStream.updateSign(outputToSign);

Examples of org.keyczar.interfaces.EncryptingStream

Related Classes of org.keyczar.interfaces.EncryptingStream