public class

GOST28147Engine

extends Object
implements BlockCipher
java.lang.Object
   ↳ org.bouncycastle.crypto.engines.GOST28147Engine

Class Overview

implementation of GOST 28147-89

Summary

Constants
int BLOCK_SIZE
Public Constructors
GOST28147Engine()
standard constructor.
Public Methods
String getAlgorithmName()
Return the name of the algorithm the cipher implements.
int getBlockSize()
Return the block size for this cipher (in bytes).
static byte[] getSBox(String sBoxName)
Return the S-Box associated with SBoxName
void init(boolean forEncryption, CipherParameters params)
initialise an GOST28147 cipher.
int processBlock(byte[] in, int inOff, byte[] out, int outOff)
Process one block of input from the array in and write it to the out array.
void reset()
Reset the cipher.
[Expand]
Inherited Methods
From class java.lang.Object
From interface org.bouncycastle.crypto.BlockCipher

Constants

protected static final int BLOCK_SIZE

Constant Value: 8 (0x00000008)

Public Constructors

public GOST28147Engine ()

standard constructor.

Public Methods

public String getAlgorithmName ()

Return the name of the algorithm the cipher implements.

Returns
  • the name of the algorithm the cipher implements.

public int getBlockSize ()

Return the block size for this cipher (in bytes).

Returns
  • the block size for this cipher in bytes.

public static byte[] getSBox (String sBoxName)

Return the S-Box associated with SBoxName

Parameters
sBoxName name of the S-Box
Returns
  • byte array representing the S-Box

public void init (boolean forEncryption, CipherParameters params)

initialise an GOST28147 cipher.

Parameters
forEncryption whether or not we are for encryption.
params the parameters required to set up the cipher.
Throws
IllegalArgumentException if the params argument is inappropriate.

public int processBlock (byte[] in, int inOff, byte[] out, int outOff)

Process one block of input from the array in and write it to the out array.

Parameters
in the array containing the input data.
inOff offset into the in array the data starts at.
out the array the output data will be copied into.
outOff the offset into the out array the output will start at.
Returns
  • the number of bytes processed and produced.

public void reset ()

Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).