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Bouncy Castle Cryptography 1.46 | ||||||||
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java.lang.Object org.bouncycastle.crypto.engines.Grain128Engine
public class Grain128Engine
Implementation of Martin Hell's, Thomas Johansson's and Willi Meier's stream cipher, Grain-128.
Constructor Summary | |
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Grain128Engine()
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Method Summary | |
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java.lang.String |
getAlgorithmName()
Return the name of the algorithm the cipher implements. |
void |
init(boolean forEncryption,
CipherParameters params)
Initialize a Grain-128 cipher. |
void |
processBytes(byte[] in,
int inOff,
int len,
byte[] out,
int outOff)
process a block of bytes from in putting the result into out. |
void |
reset()
reset the cipher. |
byte |
returnByte(byte in)
encrypt/decrypt a single byte returning the result. |
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 Grain128Engine()
Method Detail |
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public java.lang.String getAlgorithmName()
StreamCipher
getAlgorithmName
in interface StreamCipher
public void init(boolean forEncryption, CipherParameters params) throws java.lang.IllegalArgumentException
init
in interface StreamCipher
forEncryption
- 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 void processBytes(byte[] in, int inOff, int len, byte[] out, int outOff) throws DataLengthException
StreamCipher
processBytes
in interface StreamCipher
in
- the input byte array.inOff
- the offset into the in array where the data to be processed starts.len
- the number of bytes to be processed.out
- the output buffer the processed bytes go into.outOff
- the offset into the output byte array the processed data starts at.
DataLengthException
- if the output buffer is too small.public void reset()
StreamCipher
reset
in interface StreamCipher
public byte returnByte(byte in)
StreamCipher
returnByte
in interface StreamCipher
in
- the byte to be processed.
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