Package org.bouncycastle.crypto.modes
Class G3413OFBBlockCipher
- java.lang.Object
 - 
- org.bouncycastle.crypto.StreamBlockCipher
 - 
- org.bouncycastle.crypto.modes.G3413OFBBlockCipher
 
 
 
- 
- All Implemented Interfaces:
 BlockCipher,StreamCipher
public class G3413OFBBlockCipher extends StreamBlockCipher
An implementation of the OFB mode for GOST 3412 2015 cipher. See GOST R 3413 2015 
- 
- 
Constructor Summary
Constructors Constructor Description G3413OFBBlockCipher(BlockCipher cipher) 
- 
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected bytecalculateByte(byte in)java.lang.StringgetAlgorithmName()Return the name of the algorithm the cipher implements.intgetBlockSize()Return the block size for this cipher (in bytes).voidinit(boolean forEncryption, CipherParameters params)Initialise the cipher.intprocessBlock(byte[] in, int inOff, byte[] out, int outOff)Process one block of input from the array in and write it to the out array.voidreset()Reset the cipher.- 
Methods inherited from class org.bouncycastle.crypto.StreamBlockCipher
getUnderlyingCipher, processBytes, returnByte 
 - 
 
 - 
 
- 
- 
Constructor Detail
- 
G3413OFBBlockCipher
public G3413OFBBlockCipher(BlockCipher cipher)
- Parameters:
 cipher- base cipher
 
 - 
 
- 
Method Detail
- 
init
public void init(boolean forEncryption, CipherParameters params) throws java.lang.IllegalArgumentExceptionDescription copied from interface:BlockCipherInitialise the cipher.- Parameters:
 forEncryption- if true the cipher is initialised for encryption, if false for decryption.params- the key and other data required by the cipher.- Throws:
 java.lang.IllegalArgumentException- if the params argument is inappropriate.
 
- 
getAlgorithmName
public java.lang.String getAlgorithmName()
Description copied from interface:BlockCipherReturn the name of the algorithm the cipher implements.- Returns:
 - the name of the algorithm the cipher implements.
 
 
- 
getBlockSize
public int getBlockSize()
Description copied from interface:BlockCipherReturn the block size for this cipher (in bytes).- Returns:
 - the block size for this cipher in bytes.
 
 
- 
processBlock
public int processBlock(byte[] in, int inOff, byte[] out, int outOff) throws DataLengthException, java.lang.IllegalStateExceptionDescription copied from interface:BlockCipherProcess 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.
 - Throws:
 DataLengthException- if there isn't enough data in in, or space in out.java.lang.IllegalStateException- if the cipher isn't initialised.
 
- 
calculateByte
protected byte calculateByte(byte in)
- Specified by:
 calculateBytein classStreamBlockCipher
 
- 
reset
public void reset()
Description copied from interface:BlockCipherReset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one). 
 - 
 
 -