org.bouncycastle.crypto.modes
Class SICBlockCipher
java.lang.Object
org.bouncycastle.crypto.modes.SICBlockCipher
- BlockCipher
public class SICBlockCipher
extends java.lang.Object
Implements the Segmented Integer Counter (SIC) mode on top of a simple
block cipher. This mode is also known as CTR mode.
String | getAlgorithmName() - Return the name of the algorithm the cipher implements.
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int | getBlockSize() - Return the block size for this cipher (in bytes).
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BlockCipher | getUnderlyingCipher() - return the underlying block cipher that we are wrapping.
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void | init(boolean forEncryption, CipherParameters params) - Initialise the cipher.
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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.
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void | reset() - Reset the cipher.
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SICBlockCipher
public SICBlockCipher(BlockCipher c)
Basic constructor.
c
- the block cipher to be used.
getAlgorithmName
public String getAlgorithmName()
Return the name of the algorithm the cipher implements.
- getAlgorithmName in interface BlockCipher
- the name of the algorithm the cipher implements.
getBlockSize
public int getBlockSize()
Return the block size for this cipher (in bytes).
- getBlockSize in interface BlockCipher
- the block size for this cipher in bytes.
getUnderlyingCipher
public BlockCipher getUnderlyingCipher()
return the underlying block cipher that we are wrapping.
- the underlying block cipher that we are wrapping.
init
public void init(boolean forEncryption,
CipherParameters params)
throws IllegalArgumentException
Initialise the cipher.
- init in interface BlockCipher
forEncryption
- if true the cipher is initialised for
encryption, if false for decryption.params
- the key and other data required by the cipher.
processBlock
public int processBlock(byte[] in,
int inOff,
byte[] out,
int outOff)
throws DataLengthException,
IllegalStateException
Process one block of input from the array in and write it to
the out array.
- processBlock in interface BlockCipher
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.
- the number of bytes processed and produced.
reset
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).
- reset in interface BlockCipher