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Bouncy Castle Cryptography 1.28 | |||||||||
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java.lang.Objectorg.bouncycastle.crypto.engines.IDEAEngine
A class that provides a basic International Data Encryption Algorithm (IDEA) engine.
This implementation is based on the "HOWTO: INTERNATIONAL DATA ENCRYPTION ALGORITHM" implementation summary by Fauzan Mirza (F.U.Mirza@sheffield.ac.uk). (baring 1 typo at the end of the mulinv function!).
It can be found at ftp://ftp.funet.fi/pub/crypt/cryptography/symmetric/idea/
Note: This algorithm is patented in the USA, Japan, and Europe including at least Austria, France, Germany, Italy, Netherlands, Spain, Sweden, Switzerland and the United Kingdom. Non-commercial use is free, however any commercial products are liable for royalties. Please see www.mediacrypt.com for further details. This announcement has been included at the request of the patent holders.
| Field Summary | |
protected static int |
BLOCK_SIZE
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| Constructor Summary | |
IDEAEngine()
standard constructor. |
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| Method Summary | |
java.lang.String |
getAlgorithmName()
Return the name of the algorithm the cipher implements. |
int |
getBlockSize()
Return the block size for this cipher (in bytes). |
void |
init(boolean forEncryption,
CipherParameters params)
initialise an IDEA cipher. |
int |
processBlock(byte[] in,
int inOff,
byte[] out,
int outOff)
Process one block of input from the array in and write it to the out array. |
void |
reset()
Reset the cipher. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
protected static final int BLOCK_SIZE
| Constructor Detail |
public IDEAEngine()
| Method Detail |
public void init(boolean forEncryption,
CipherParameters params)
init in interface BlockCipherforEncryption - whether or not we are for encryption.params - the parameters required to set up the cipher.
java.lang.IllegalArgumentException - if the params argument is
inappropriate.public java.lang.String getAlgorithmName()
BlockCipher
getAlgorithmName in interface BlockCipherpublic int getBlockSize()
BlockCipher
getBlockSize in interface BlockCipher
public int processBlock(byte[] in,
int inOff,
byte[] out,
int outOff)
BlockCipher
processBlock in interface BlockCipherin - the array containing the input data.inOff - offset into the in array the data starts at.out - the array the output data will be copied into.outOff - the offset into the out array the output will start at.
public void reset()
BlockCipher
reset in interface BlockCipher
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Bouncy Castle Cryptography 1.28 | |||||||||
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