org.bouncycastle.crypto.modes
Class CCMBlockCipher

java.lang.Object
  org.bouncycastle.crypto.modes.CCMBlockCipher

public class CCMBlockCipher

extends java.lang.Object

Implements the Counter with Cipher Block Chaining mode (CCM) detailed in NIST Special Publication 800-38C.

Note: this mode is a packet mode - it needs all the data up front.

Constructor Summary

CCMBlockCipher(BlockCipher c)
Basic constructor.

Method Summary

java.lang.String	getAlgorithmName()
byte[]	getMac() Returns a byte array containing the mac calculated as part of the last encrypt or decrypt operation.
BlockCipher	getUnderlyingCipher() return the underlying block cipher that we are wrapping.
void	init(boolean forEncryption, CipherParameters params)
byte[]	processPacket(byte[] in, int inOff, int inLen)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CCMBlockCipher

public CCMBlockCipher(BlockCipher c)

Basic constructor.

Parameters:

c - the block cipher to be used.

Method Detail

getUnderlyingCipher

public BlockCipher getUnderlyingCipher()

return the underlying block cipher that we are wrapping.

Returns:

the underlying block cipher that we are wrapping.

init

public void init(boolean forEncryption,
                 CipherParameters params)
          throws java.lang.IllegalArgumentException

Throws:

java.lang.IllegalArgumentException

getAlgorithmName

public java.lang.String getAlgorithmName()

getMac

public byte[] getMac()

Returns a byte array containing the mac calculated as part of the last encrypt or decrypt operation.

Returns:

the last mac calculated.

processPacket

public byte[] processPacket(byte[] in,
                            int inOff,
                            int inLen)
                     throws java.lang.IllegalStateException,
                            InvalidCipherTextException

Throws:

java.lang.IllegalStateException

InvalidCipherTextException