Bouncy Castle Provider 1.77 · org.bouncycastle.crypto.BlockCipher

Method Summary

Modifier and Type	Method and Description
public String	Returns: the name of the algorithm the cipher implements. getAlgorithmName() Return the name of the algorithm the cipher implements.
public int	Returns: the block size for this cipher in bytes. getBlockSize() Return the block size for this cipher (in bytes).
public void	init(boolean if true the cipher is initialised for encryption, if false for decryption. forEncryption, CipherParameters the key and other data required by the cipher. params) Initialise the cipher.
public int	Returns: the number of bytes processed and produced. processBlock(byte[] the array containing the input data. input, int offset into the in array the data starts at. inOff, byte[] the array the output data will be copied into. output, int the offset into the out array the output will start at. outOff) Process one block of input from the array in and write it to the out array.
public void	reset() Reset the cipher.

getAlgorithmName	back to summary
public String getAlgorithmName() Return the name of the algorithm the cipher implements. Returns:String the name of the algorithm the cipher implements.

getAlgorithmName

public String getAlgorithmName()

Return the name of the algorithm the cipher implements.

getBlockSize	back to summary
public int getBlockSize() Return the block size for this cipher (in bytes). Returns:int the block size for this cipher in bytes.

getBlockSize

public int getBlockSize()

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

init	back to summary
public void init(boolean forEncryption, CipherParameters params) throws IllegalArgumentException Initialise the cipher. Parameters forEncryption:boolean if true the cipher is initialised for encryption, if false for decryption. params:CipherParameters the key and other data required by the cipher. Exceptions IllegalArgumentException: if the params argument is inappropriate.

init

public void init(boolean forEncryption, CipherParameters params) throws IllegalArgumentException

Initialise the cipher.

Parameters

forEncryption:boolean: if true the cipher is initialised for encryption, if false for decryption.
params:CipherParameters: the key and other data required by the cipher.

Exceptions

processBlock	back to summary
public int processBlock(byte[] input, int inOff, byte[] output, int outOff) throws DataLengthException, IllegalStateException Process one block of input from the array in and write it to the out array. Parameters input:byte[] the array containing the input data. inOff:int offset into the in array the data starts at. output:byte[] the array the output data will be copied into. outOff:int the offset into the out array the output will start at. Returns:int the number of bytes processed and produced. Exceptions DataLengthException: if there isn't enough data in input , or space in out. IllegalStateException: if the cipher isn't initialised.

processBlock

public int processBlock(byte[] input, int inOff, byte[] output, int outOff) throws DataLengthException, IllegalStateException

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

Parameters

Returns:int

the number of bytes processed and produced.

Exceptions

DataLengthException:: if there isn't enough data in input , or space in out.
IllegalStateException:: if the cipher isn't initialised.

reset	back to summary
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).