gnu.javax.crypto.cipher
Class Khazad
- Cloneable, IBlockCipher, gnu.javax.crypto.cipher.IBlockCipherSpi
Khazad is a 64-bit (legacy-level) block cipher that accepts a 128-bit key.
The cipher is a uniform substitution-permutation network whose inverse only
differs from the forward operation in the key schedule. The overall cipher
design follows the Wide Trail strategy, favours component reuse, and permits
a wide variety of implementation trade-offs.
References:
- The
Khazad Block Cipher.
Paulo S.L.M. Barreto and Vincent Rijmen.
Khazad()- Trivial 0-arguments constructor.
|
Iterator<E> | blockSizes()- Returns an
Iterator over the supported block sizes.
|
Object | clone()- Returns a clone of this instance.
|
void | decrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
|
void | encrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
|
Iterator<E> | keySizes()- Returns an
Iterator over the supported key sizes.
|
Object | makeKey(byte[] uk, int bs)- Expands a user-supplied key material into a session key for a designated
block size.
|
boolean | selfTest()- A correctness test that consists of basic symmetric encryption /
decryption test(s) for all supported block and key sizes, as well as one
(1) variable key Known Answer Test (KAT).
|
clone, currentBlockSize, decryptBlock, defaultBlockSize, defaultKeySize, encryptBlock, init, name, reset, selfTest, testKat, testKat |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
Khazad
public Khazad()
Trivial 0-arguments constructor.
decrypt
public void decrypt(byte[] in,
int i,
byte[] out,
int j,
Object k,
int bs)- decrypt in interface gnu.javax.crypto.cipher.IBlockCipherSpi
encrypt
public void encrypt(byte[] in,
int i,
byte[] out,
int j,
Object k,
int bs)- encrypt in interface gnu.javax.crypto.cipher.IBlockCipherSpi
makeKey
public Object makeKey(byte[] uk,
int bs)
throws InvalidKeyException Expands a user-supplied key material into a session key for a designated
block size.
- makeKey in interface gnu.javax.crypto.cipher.IBlockCipherSpi
uk - the 128-bit user-supplied key material.bs - the desired block size in bytes.
- an Object encapsulating the session key.
selfTest
public boolean selfTest()
A correctness test that consists of basic symmetric encryption /
decryption test(s) for all supported block and key sizes, as well as one
(1) variable key Known Answer Test (KAT).
- selfTest in interface IBlockCipher
- selfTest in interface gnu.javax.crypto.cipher.IBlockCipherSpi
- selfTest in interface BaseCipher
true if the implementation passes simple
correctness tests. Returns false otherwise.
Khazad.java --
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