cryptix.provider.key
Class LOKI91KeyGenerator
java.lang.Object
xjava.security.KeyGenerator
cryptix.provider.key.RawKeyGenerator
cryptix.provider.key.LOKI91KeyGenerator
- All Implemented Interfaces:
- java.lang.Cloneable, ExtendedKeyGenerator, Parameterized
- public class LOKI91KeyGenerator
- extends RawKeyGenerator
A key generator for LOKI91.
LOKI91 keys have a fixed length of 64 bits.
Copyright © 1997
Systemics Ltd on behalf of the
Cryptix Development Team.
All rights reserved.
$Revision: 1.2 $
- Since:
- Cryptix 2.2.0a, 2.2.2
- Author:
- Raif S. Naffah, David Hopwood
Method Summary |
boolean |
isWeak(byte[] key)
Returns true iff the byte array key represents a
weak or semi-weak LOKI91 key. |
Methods inherited from class cryptix.provider.key.RawKeyGenerator |
engineGenerateKey, generateKey, generateKey, getDefaultKeyLength, getMaximumKeyLength, getMinimumKeyLength, initialize, initialize, isValidKeyLength, isWeakAllowed, setWeakAllowed |
Methods inherited from class xjava.security.KeyGenerator |
clone, engineGetParameter, engineSetParameter, getAlgorithm, getAlgorithms, getAlgorithms, getInstance, getInstance, getParameter, setParameter, toString |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
LOKI91KeyGenerator
public LOKI91KeyGenerator()
isWeak
public boolean isWeak(byte[] key)
- Returns true iff the byte array key represents a
weak or semi-weak LOKI91 key.
LOKI91 has four weak keys and twelve semi-weak keys. Here are
the lists of these keys (values given in hexadecimal form):
Weak Keys:
- 00000000 00000000
- FFFFFFFF FFFFFFFF
- 55555555 AAAAAAAA
- AAAAAAAA 55555555
Semi-Weak Keys:
- 00000000 55555555
- AAAAAAAA 00000000
- 00000000 AAAAAAAA
- 55555555 00000000
- 00000000 FFFFFFFF
- FFFFFFFF 00000000
- 55555555 55555555
- AAAAAAAA AAAAAAAA
- 55555555 FFFFFFFF
- FFFFFFFF AAAAAAAA
- AAAAAAAA FFFFFFFF
- FFFFFFFF 55555555
- Overrides:
isWeak
in class RawKeyGenerator
- Parameters:
key
- the byte array containing user key data.