cryptix.provider.key
Class LOKI91KeyGenerator
java.lang.Object
|
+--xjava.security.KeyGenerator
|
+--cryptix.provider.key.RawKeyGenerator
|
+--cryptix.provider.key.LOKI91KeyGenerator
- 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.
Copyright (C) 1995-2000 The Cryptix Foundation Ltd. All rights reserved.