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Bouncy Castle Cryptography 1.11 API Specification: Class RC4Engine
org.bouncycastle.crypto.engines
Class RC4Engine
java.lang.Object
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+--org.bouncycastle.crypto.engines.RC4Engine
- All Implemented Interfaces:
- StreamCipher
- public class RC4Engine
- extends java.lang.Object
- implements StreamCipher
Method Summary |
java.lang.String |
getAlgorithmName()
Return the name of the algorithm the cipher implements. |
void |
init(boolean forEncryption,
CipherParameters params)
initialise a RC4 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 |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
RC4Engine
public RC4Engine()
init
public void init(boolean forEncryption,
CipherParameters params)
- initialise a RC4 cipher.
- Specified by:
init in interface StreamCipher
- Parameters:
forEncryption - whether or not we are for encryption.params - the parameters required to set up the cipher.- Throws:
java.lang.IllegalArgumentException - if the params argument is
inappropriate.
getAlgorithmName
public java.lang.String getAlgorithmName()
- Description copied from interface:
StreamCipher
- Return the name of the algorithm the cipher implements.
- Specified by:
getAlgorithmName in interface StreamCipher
- Following copied from interface:
org.bouncycastle.crypto.StreamCipher
- Returns:
- the name of the algorithm the cipher implements.
returnByte
public byte returnByte(byte in)
- Description copied from interface:
StreamCipher
- encrypt/decrypt a single byte returning the result.
- Specified by:
returnByte in interface StreamCipher
- Following copied from interface:
org.bouncycastle.crypto.StreamCipher
- Parameters:
in - the byte to be processed.- Returns:
- the result of processing the input byte.
processBytes
public void processBytes(byte[] in,
int inOff,
int len,
byte[] out,
int outOff)
- Description copied from interface:
StreamCipher
- process a block of bytes from in putting the result into out.
- Specified by:
processBytes in interface StreamCipher
- Following copied from interface:
org.bouncycastle.crypto.StreamCipher
- Parameters:
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 stars at.- Throws:
DataLengthException - if the output buffer is too small.
reset
public void reset()
- Description copied from interface:
StreamCipher
- reset the cipher. This leaves it in the same state
it was at after the last init (if there was one).
- Specified by:
reset in interface StreamCipher
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