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java.lang.Object
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+--gnu.crypto.cipher.BaseCipher
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+--gnu.crypto.cipher.Rijndael
Rijndael --pronounced Reindaal-- is the AES. It is a variable block-size (128-, 192- and 256-bit), variable key-size (128-, 192- and 256-bit) symmetric key block cipher.
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 | |
Rijndael()
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. |
static int |
getRounds(int ks,
int bs)
Returns the number of rounds for a given Rijndael's key and block sizes. |
java.util.Iterator |
keySizes()
Returns an Iterator over the supported key sizes. |
java.lang.Object |
makeKey(byte[] k,
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 Rijndael()
| Method Detail |
static void()
public static int getRounds(int ks,
int bs)
Returns the number of rounds for a given Rijndael's key and block sizes.
ks - the size of the user key material in bytes.bs - the desired block size in bytes.public java.lang.Object clone()
IBlockCipherReturns a clone of this instance.
clone in class BaseCiphergnu.crypto.cipher.IBlockCipherpublic java.util.Iterator blockSizes()
IBlockCipherReturns an Iterator over the supported block sizes. Each
element returned by this object is an Integer.
gnu.crypto.cipher.IBlockCipherIterator over the supported block sizes.public java.util.Iterator keySizes()
IBlockCipherReturns an Iterator over the supported key sizes. Each element
returned by this object is an Integer.
gnu.crypto.cipher.IBlockCipherIterator over the supported key sizes.
public java.lang.Object makeKey(byte[] k,
int bs)
throws java.security.InvalidKeyException
k - the 128/192/256-bit user-key to use.bs - the block size in bytes of this Rijndael.java.lang.IllegalArgumentException - if the block size is not 16, 24 or 32.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)
IBlockCipherSpiEncrypts exactly one block of plaintext.
gnu.crypto.cipher.IBlockCipherSpiin - 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)
IBlockCipherSpiDecrypts exactly one block of ciphertext.
gnu.crypto.cipher.IBlockCipherSpiin - 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()
IBlockCipherA 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 BaseCiphergnu.crypto.cipher.IBlockCiphertrue if the implementation passes simple
correctness tests. Returns false otherwise.
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For the latest news and information visit The GNU Crypto project |
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