Constructor Detail

• GOST28147Mac

  public GOST28147Mac()

Method Detail

• init

  public void init​(CipherParameters params)
            throws java.lang.IllegalArgumentException

  Description copied from interface: Mac
  Initialise the MAC.

  Specified by:

  init in interface Mac

  Parameters:

  params - the key and other data required by the MAC.

  Throws:

  java.lang.IllegalArgumentException - if the params argument is inappropriate.

• getAlgorithmName

  public java.lang.String getAlgorithmName()

  Description copied from interface: Mac
  Return the name of the algorithm the MAC implements.

  Specified by:

  getAlgorithmName in interface Mac

  Returns:

  the name of the algorithm the MAC implements.

• getMacSize

  public int getMacSize()

  Description copied from interface: Mac
  Return the block size for this MAC (in bytes).

  Specified by:

  getMacSize in interface Mac

  Returns:

  the block size for this MAC in bytes.

• update

  public void update​(byte in)
              throws java.lang.IllegalStateException

  Description copied from interface: Mac
  add a single byte to the mac for processing.

  Specified by:

  update in interface Mac

  Parameters:

  in - the byte to be processed.

  Throws:

  java.lang.IllegalStateException - if the MAC is not initialised.

• update

  public void update​(byte[] in,
                     int inOff,
                     int len)
              throws DataLengthException,
                     java.lang.IllegalStateException

  Specified by:

  update in interface Mac

  Parameters:

  in - the array containing the input.

  inOff - the index in the array the data begins at.

  len - the length of the input starting at inOff.

  Throws:

  DataLengthException - if there isn't enough data in in.

  java.lang.IllegalStateException - if the MAC is not initialised.

• doFinal

  public int doFinal​(byte[] out,
                     int outOff)
              throws DataLengthException,
                     java.lang.IllegalStateException

  Description copied from interface: Mac
  Compute the final stage of the MAC writing the output to the out parameter.

  doFinal leaves the MAC in the same state it was after the last init.

  Specified by:

  doFinal in interface Mac

  Parameters:

  out - the array the MAC is to be output to.

  outOff - the offset into the out buffer the output is to start at.

  Throws:

  DataLengthException - if there isn't enough space in out.

  java.lang.IllegalStateException - if the MAC is not initialised.

• reset

  public void reset()

  Description copied from interface: Mac
  Reset the MAC. At the end of resetting the MAC should be in the in the same state it was after the last init (if there was one).

  Specified by:

  reset in interface Mac