org.bouncycastle.crypto.engines
Class RFC3394WrapEngine

java.lang.Object
  org.bouncycastle.crypto.engines.RFC3394WrapEngine

All Implemented Interfaces:

Wrapper

Direct Known Subclasses:

AESWrapEngine, ARIAWrapEngine, CamelliaWrapEngine, SEEDWrapEngine

public class RFC3394WrapEngine

extends java.lang.Object

implements Wrapper

an implementation of the AES Key Wrapper from the NIST Key Wrap Specification as described in RFC 3394.

For further details see: https://www.ietf.org/rfc/rfc3394.txt and https://csrc.nist.gov/encryption/kms/key-wrap.pdf.

Constructor Summary

RFC3394WrapEngine(BlockCipher engine)
Create a RFC 3394 WrapEngine specifying the encrypt for wrapping, decrypt for unwrapping.

RFC3394WrapEngine(BlockCipher engine, boolean useReverseDirection)
Create a RFC 3394 WrapEngine specifying the direction for wrapping and unwrapping..

Method Summary

java.lang.String	getAlgorithmName() Return the name of the algorithm the wrapper implements.
void	init(boolean forWrapping, CipherParameters param)
byte[]	unwrap(byte[] in, int inOff, int inLen)
byte[]	wrap(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

RFC3394WrapEngine

public RFC3394WrapEngine(BlockCipher engine)

Create a RFC 3394 WrapEngine specifying the encrypt for wrapping, decrypt for unwrapping.

Parameters:

engine - the block cipher to be used for wrapping.

RFC3394WrapEngine

public RFC3394WrapEngine(BlockCipher engine,
                         boolean useReverseDirection)

Create a RFC 3394 WrapEngine specifying the direction for wrapping and unwrapping..

Parameters:

engine - the block cipher to be used for wrapping.

useReverseDirection - true if engine should be used in decryption mode for wrapping, false otherwise.

Method Detail

init

public void init(boolean forWrapping,
                 CipherParameters param)

Specified by:

init in interface Wrapper

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from interface: Wrapper

Return the name of the algorithm the wrapper implements.

Specified by:

getAlgorithmName in interface Wrapper

Returns:

the name of the algorithm the wrapper implements.

wrap

public byte[] wrap(byte[] in,
                   int inOff,
                   int inLen)

Specified by:

wrap in interface Wrapper

unwrap

public byte[] unwrap(byte[] in,
                     int inOff,
                     int inLen)
              throws InvalidCipherTextException

Specified by:

unwrap in interface Wrapper

Throws:

InvalidCipherTextException