org.bouncycastle.crypto.engines
Class IDEAEngine
java.lang.Object
org.bouncycastle.crypto.engines.IDEAEngine
- BlockCipher
public class IDEAEngine
extends java.lang.Object
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.
BLOCK_SIZE
protected static final int BLOCK_SIZE
IDEAEngine
public IDEAEngine()
standard constructor.
init
public void init(boolean forEncryption,
CipherParameters params)
initialise an IDEA cipher.
- init in interface BlockCipher
forEncryption
- whether or not we are for encryption.params
- the parameters required to set up the cipher.
processBlock
public int processBlock(byte[] in,
int inOff,
byte[] out,
int outOff)
- processBlock in interface BlockCipher