sam.cipher
Class RC6
java.lang.Object
|
+--sam.cipher.Cipher
|
+--sam.cipher.RC6
- public class RC6
- extends Cipher
Implementation of the RC6
cipher.
Retrofitted for personal use by Guillaume Lacôte.
This program is part of an implementation of the block
cipher RC6(TM) that is being submitted to NIST as a
candidate for the AES.
Ronald L. Rivest and RSA Laboratories, the submitters of
RC6, retain all rights to RC6 and to this code, except for
those which NIST requires to be waived for submissions.
Copyright (C) 1998 RSA Data Security, Inc.
Parts Copyright (c) 1997, 1998 Systemics Ltd on behalf of
the Cryptix Development Team. All rights reserved.
Portions of this code are Copyright © 1997, 1998
Systemics Ltd on behalf of the
Cryptix DevelopmentTeam.
All rights reserved.
$Revision: $
Nested Class Summary |
static class |
RC6.Key
Key implementation that is adapted to the RC6 cipher. |
Constructor Summary |
RC6(sam.cipher.Key key)
|
Method Summary |
protected void |
decrypt(byte[] data,
int offset,
sam.cipher.Key key)
Decrypt exactly one block of ciphertext. |
protected void |
encrypt(byte[] data,
int offset,
sam.cipher.Key key)
Encrypt exactly one block of plaintext. |
int |
getPreferredSize(int size)
Specifiy preferred buffer size. |
Methods inherited from class sam.cipher.Cipher |
cipher, cipher, fill, main, store, store, storeReversed, streamTest, test, unstoreInt, unstoreLong, unstoreReversedLong |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
RC6
public RC6(sam.cipher.Key key)
getPreferredSize
public int getPreferredSize(int size)
- Description copied from class:
Cipher
- Specifiy preferred buffer size.
May return a fixed value, ignoring suggested size (e.g. return 16;
).
By default, this implementation simply returns its argument unchanged.
- Overrides:
getPreferredSize
in class Cipher
- Parameters:
size
- proposed buffer size (in bytes)
- Returns:
- The length in bytes of the Algorithm input block.
encrypt
protected void encrypt(byte[] data,
int offset,
sam.cipher.Key key)
- Encrypt exactly one block of plaintext.
- Specified by:
encrypt
in class Cipher
- Parameters:
data
- The plaintext.key
- The session key to use for encryption.
decrypt
protected void decrypt(byte[] data,
int offset,
sam.cipher.Key key)
- Decrypt exactly one block of ciphertext.
- Specified by:
decrypt
in class Cipher
- Parameters:
data
- The ciphertext.key
- The session key to use for decryption.