Package org.bouncycastle.crypto.engines
Class GOST28147Engine
- java.lang.Object
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- org.bouncycastle.crypto.engines.GOST28147Engine
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- All Implemented Interfaces:
BlockCipher
public class GOST28147Engine extends java.lang.Object implements BlockCipher
implementation of GOST 28147-89
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Field Summary
Fields Modifier and Type Field Description protected static int
BLOCK_SIZE
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Constructor Summary
Constructors Constructor Description GOST28147Engine()
standard constructor.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.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(java.lang.String sBoxName)
Return the S-Box associated with SBoxNamestatic java.lang.String
getSBoxName(byte[] sBox)
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.
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Field Detail
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BLOCK_SIZE
protected static final int BLOCK_SIZE
- See Also:
- Constant Field Values
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Method Detail
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init
public void init(boolean forEncryption, CipherParameters params)
initialise an GOST28147 cipher.- Specified by:
init
in interfaceBlockCipher
- 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.
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getAlgorithmName
public java.lang.String getAlgorithmName()
Description copied from interface:BlockCipher
Return the name of the algorithm the cipher implements.- Specified by:
getAlgorithmName
in interfaceBlockCipher
- Returns:
- the name of the algorithm the cipher implements.
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getBlockSize
public int getBlockSize()
Description copied from interface:BlockCipher
Return the block size for this cipher (in bytes).- Specified by:
getBlockSize
in interfaceBlockCipher
- Returns:
- the block size for this cipher in bytes.
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processBlock
public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
Description copied from interface:BlockCipher
Process one block of input from the array in and write it to the out array.- Specified by:
processBlock
in interfaceBlockCipher
- 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.
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reset
public void reset()
Description copied from interface:BlockCipher
Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).- Specified by:
reset
in interfaceBlockCipher
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getSBox
public static byte[] getSBox(java.lang.String sBoxName)
Return the S-Box associated with SBoxName- Parameters:
sBoxName
- name of the S-Box- Returns:
- byte array representing the S-Box
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getSBoxName
public static java.lang.String getSBoxName(byte[] sBox)
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