Method Detail

• init

  void init​(boolean forEncryption,
            CipherParameters param)

  initialise the cipher.

  Parameters:

  forEncryption - if true the cipher is initialised for encryption, if false for decryption.

  param - the key and other data required by the cipher.

• getInputBlockSize

  int getInputBlockSize()

  returns the largest size an input block can be.

  Returns:

  maximum size for an input block.

• getOutputBlockSize

  int getOutputBlockSize()

  returns the maximum size of the block produced by this cipher.

  Returns:

  maximum size of the output block produced by the cipher.

• processBlock

  byte[] processBlock​(byte[] in,
                      int inOff,
                      int len)
               throws InvalidCipherTextException

  process the block of len bytes stored in in from offset inOff.

  Parameters:

  in - the input data

  inOff - offset into the in array where the data starts

  len - the length of the block to be processed.

  Returns:

  the resulting byte array of the encryption/decryption process.

  Throws:

  InvalidCipherTextException - data decrypts improperly.

  DataLengthException - the input data is too large for the cipher.