org.bouncycastle.crypto.engines
Class RC4Engine
java.lang.Object
org.bouncycastle.crypto.engines.RC4Engine
- StreamCipher
public class RC4Engine
extends java.lang.Object
String | getAlgorithmName() - Return the name of the algorithm the cipher implements.
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void | init(boolean forEncryption, CipherParameters params) - initialise a RC4 cipher.
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void | processBytes(byte[] in, int inOff, int len, byte[] out, int outOff) - process a block of bytes from in putting the result into out.
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void | reset() - reset the cipher.
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byte | returnByte(byte in) - encrypt/decrypt a single byte returning the result.
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getAlgorithmName
public String getAlgorithmName()
Return the name of the algorithm the cipher implements.
- getAlgorithmName in interface StreamCipher
- the name of the algorithm the cipher implements.
init
public void init(boolean forEncryption,
CipherParameters params)
initialise a RC4 cipher.
- init in interface StreamCipher
forEncryption
- whether or not we are for encryption.params
- the parameters required to set up the cipher.
processBytes
public void processBytes(byte[] in,
int inOff,
int len,
byte[] out,
int outOff)
process a block of bytes from in putting the result into out.
- 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 stars at.
reset
public void reset()
reset the cipher. This leaves it in the same state
it was at after the last init (if there was one).
- reset in interface StreamCipher
returnByte
public byte returnByte(byte in)
encrypt/decrypt a single byte returning the result.
- returnByte in interface StreamCipher
in
- the byte to be processed.
- the result of processing the input byte.