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java.lang.Objectcom.opensymphony.module.random.Rijndael_Algorithm
public final class Rijndael_Algorithm
DOCUMENT ME!
Constructor Summary | |
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Rijndael_Algorithm()
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Method Summary | |
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static byte[] |
blockDecrypt(byte[] in,
int inOffset,
Object sessionKey)
Convenience method to decrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit). |
static byte[] |
blockDecrypt(byte[] in,
int inOffset,
Object sessionKey,
int blockSize)
Decrypt exactly one block of ciphertext. |
static byte[] |
blockEncrypt(byte[] in,
int inOffset,
Object sessionKey)
Convenience method to encrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit). |
static byte[] |
blockEncrypt(byte[] in,
int inOffset,
Object sessionKey,
int blockSize)
Encrypt exactly one block of plaintext. |
static int |
blockSize()
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static int |
getRounds(int keySize,
int blockSize)
Return The number of rounds for a given Rijndael's key and block sizes. |
static void |
main(String[] args)
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static Object |
makeKey(byte[] k)
Convenience method to expand a user-supplied key material into a session key, assuming Rijndael's default block size (128-bit). |
static Object |
makeKey(byte[] k,
int blockSize)
Expand a user-supplied key material into a session key. |
static boolean |
self_test()
A basic symmetric encryption/decryption test. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Rijndael_Algorithm()
Method Detail |
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public static int getRounds(int keySize, int blockSize)
keySize
- The size of the user key material in bytes.blockSize
- The desired block size in bytes.
public static byte[] blockDecrypt(byte[] in, int inOffset, Object sessionKey)
in
- The ciphertext.inOffset
- Index of in from which to start considering data.sessionKey
- The session key to use for decryption.
public static byte[] blockDecrypt(byte[] in, int inOffset, Object sessionKey, int blockSize)
in
- The ciphertext.inOffset
- Index of in from which to start considering data.sessionKey
- The session key to use for decryption.blockSize
- The block size in bytes of this Rijndael.
public static byte[] blockEncrypt(byte[] in, int inOffset, Object sessionKey)
in
- The plaintext.inOffset
- Index of in from which to start considering data.sessionKey
- The session key to use for encryption.
public static byte[] blockEncrypt(byte[] in, int inOffset, Object sessionKey, int blockSize)
in
- The plaintext.inOffset
- Index of in from which to start considering data.sessionKey
- The session key to use for encryption.blockSize
- The block size in bytes of this Rijndael.
public static int blockSize()
public static void main(String[] args)
public static Object makeKey(byte[] k) throws InvalidKeyException
k
- The 128/192/256-bit user-key to use.
InvalidKeyException
- If the key is invalid.public static Object makeKey(byte[] k, int blockSize) throws InvalidKeyException
k
- The 128/192/256-bit user-key to use.blockSize
- The block size in bytes of this Rijndael.
InvalidKeyException
- If the key is invalid.public static boolean self_test()
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