Package org.apache.sshd.common.cipher

Class BaseRC4Cipher

java.lang.Object

org.apache.sshd.common.cipher.BaseCipher

org.apache.sshd.common.cipher.BaseRC4Cipher

All Implemented Interfaces:

AlgorithmNameProvider, Cipher, CipherInformation, KeySizeIndicator

public class BaseRC4Cipher
extends BaseCipher

Author:

Apache MINA SSHD Project

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.sshd.common.cipher.Cipher

Cipher.Mode

Field Summary

Fields

Modifier and Type	Field	Description
static final int	SKIP_SIZE

Fields inherited from class org.apache.sshd.common.cipher.BaseCipher

mode

Constructor Summary

Constructors

Constructor	Description
BaseRC4Cipher(int ivsize, int kdfSize, int keySize, int blkSize)

Method Summary

Modifier and Type	Method	Description
protected Cipher	createCipherInstance(Cipher.Mode mode, byte[] key, byte[] iv)
protected byte[]	initializeIVData(Cipher.Mode mode, byte[] iv, int reqLen)
void	update(byte[] input, int inputOffset, int inputLen)	Performs in-place encryption or decryption on the given data.

Methods inherited from class org.apache.sshd.common.cipher.BaseCipher

determineNewParameters, getAlgorithm, getAuthenticationTagSize, getCipherBlockSize, getCipherInstance, getIVSize, getKdfSize, getKeySize, getTransformation, init, initializeKeyData, reInit, resize, toString, updateAAD

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.sshd.common.cipher.Cipher

update, updateAAD, updateWithAAD

Field Details

SKIP_SIZE

public static final int SKIP_SIZE

See Also:

• Constant Field Values

Constructor Details

BaseRC4Cipher

public BaseRC4Cipher(int ivsize,
 int kdfSize,
 int keySize,
 int blkSize)

Method Details

initializeIVData

protected byte[] initializeIVData(Cipher.Mode mode,
 byte[] iv,
 int reqLen)

Overrides:

initializeIVData in class BaseCipher

createCipherInstance

protected Cipher createCipherInstance(Cipher.Mode mode,
 byte[] key,
 byte[] iv)
                               throws Exception

Overrides:

createCipherInstance in class BaseCipher

Throws:

Exception

update

public void update(byte[] input,
 int inputOffset,
 int inputLen)
            throws Exception

Description copied from interface: Cipher

Performs in-place encryption or decryption on the given data.

Specified by:

update in interface Cipher

Overrides:

update in class BaseCipher

Parameters:

input - The input/output bytes

inputOffset - The offset of the data in the data buffer

inputLen - The number of bytes to update, starting at the given offset; must be a multiple of the cipher's block size

Throws:

Exception - If failed to execute