gnu.crypto.prng
Class ARCFour
- Cloneable, IRandom
RC4 is a stream cipher developed by Ron Rivest. Until 1994 RC4 was a
trade secret of RSA Data Security, Inc., when it was released
anonymously to a mailing list. This version is a descendent of that
code, and since there is no proof that the leaked version was in fact
RC4 and because "RC4" is a trademark, it is called "ARCFOUR", short for
"Allegedly RC4".
This class only implements the
keystream of ARCFOUR. To use
this as a stream cipher, one would say:
out = in ^ arcfour.nextByte();
This operation works for encryption and decryption.
References:
- Schneier, Bruce: Applied Cryptography: Protocols, Algorithms,
and Source Code in C, Second Edition. (1996 John Wiley and Sons),
pp. 397--398. ISBN 0-471-11709-9
- K. Kaukonen and R. Thayer, "A Stream Cipher Encryption Algorithm
'Arcfour'", Internet Draft (expired), draft-kaukonen-cipher-arcfour-03.txt
Version:
ARCFour() - Default 0-arguments constructor.
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ARCFOUR_KEY_MATERIAL
public static final String ARCFOUR_KEY_MATERIAL
The attributes property name for the key bytes.
ARCFOUR_SBOX_SIZE
public static final int ARCFOUR_SBOX_SIZE
The size of the internal S-box.
- 256
ARCFour
public ARCFour()
Default 0-arguments constructor.
clone
public Object clone()
Returns a clone copy of this instance.
- clone in interface IRandom
- clone in interface BasePRNG
- a clone copy of this instance.
setup
public void setup(Map attributes)
- setup in interface BasePRNG
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Free Software Foundation,
Inc. All Rights Reserved.