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java.lang.Object | +--gnu.crypto.cipher.BaseCipher | +--gnu.crypto.cipher.Anubis
Anubis is a 128-bit block cipher that accepts a variable-length key. The cipher is a uniform substitution-permutation network whose inverse only differs from the forward operation in the key schedule. The design of both the round transformation and the key schedule is based upon the Wide Trail strategy and permits a wide variety of implementation trade-offs.
References:
Fields inherited from class gnu.crypto.cipher.BaseCipher |
currentBlockSize, currentKey, defaultBlockSize, defaultKeySize, lock, name |
Fields inherited from interface gnu.crypto.cipher.IBlockCipher |
CIPHER_BLOCK_SIZE, KEY_MATERIAL |
Constructor Summary | |
Anubis()
Trivial 0-arguments constructor. |
Method Summary | |
(package private) static void |
|
java.util.Iterator |
blockSizes()
Returns an Iterator over the supported block sizes. |
java.lang.Object |
clone()
Returns a clone of this instance. |
void |
decrypt(byte[] in,
int i,
byte[] out,
int j,
java.lang.Object k,
int bs)
Decrypts exactly one block of ciphertext. |
void |
encrypt(byte[] in,
int i,
byte[] out,
int j,
java.lang.Object k,
int bs)
Encrypts exactly one block of plaintext. |
java.util.Iterator |
keySizes()
Returns an Iterator over the supported key sizes. |
java.lang.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). |
Methods inherited from class gnu.crypto.cipher.BaseCipher |
currentBlockSize, decryptBlock, defaultBlockSize, defaultKeySize, encryptBlock, init, name, reset, testKat |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public Anubis()
Method Detail |
static void()
public java.lang.Object clone()
IBlockCipher
Returns a clone of this instance.
clone
in class BaseCipher
gnu.crypto.cipher.IBlockCipher
public java.util.Iterator blockSizes()
IBlockCipher
Returns an Iterator
over the supported block sizes. Each
element returned by this object is an Integer
.
gnu.crypto.cipher.IBlockCipher
Iterator
over the supported block sizes.public java.util.Iterator keySizes()
IBlockCipher
Returns an Iterator
over the supported key sizes. Each element
returned by this object is an Integer
.
gnu.crypto.cipher.IBlockCipher
Iterator
over the supported key sizes.public java.lang.Object makeKey(byte[] uk, int bs) throws java.security.InvalidKeyException
Expands a user-supplied key material into a session key for a designated block size.
uk
- the 32N-bit user-supplied key material; 4 <= N <= 10.bs
- the desired block size in bytes.java.lang.IllegalArgumentException
- if the block size is not 16 (128-bit).java.security.InvalidKeyException
- if the key data is invalid.public void encrypt(byte[] in, int i, byte[] out, int j, java.lang.Object k, int bs)
IBlockCipherSpi
Encrypts exactly one block of plaintext.
gnu.crypto.cipher.IBlockCipherSpi
in
- the plaintext.inOffset
- index of in
from which to start considering
data.out
- the ciphertext.outOffset
- index of out
from which to store the result.k
- the session key to use.bs
- the block size to use.java.lang.IllegalArgumentException
- if the block size is invalid.ArrayIndexOutOfBoundsException
- if there is not enough room in
either the plaintext or ciphertext buffers.public void decrypt(byte[] in, int i, byte[] out, int j, java.lang.Object k, int bs)
IBlockCipherSpi
Decrypts exactly one block of ciphertext.
gnu.crypto.cipher.IBlockCipherSpi
in
- the ciphertext.inOffset
- index of in
from which to start considering
data.out
- the plaintext.outOffset
- index of out
from which to store the result.k
- the session key to use.bs
- the block size to use.java.lang.IllegalArgumentException
- if the block size is invalid.ArrayIndexOutOfBoundsException
- if there is not enough room in
either the plaintext or ciphertext buffers.public boolean selfTest()
IBlockCipher
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 class BaseCipher
gnu.crypto.cipher.IBlockCipher
true
if the implementation passes simple
correctness tests. Returns false
otherwise.
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