org.bouncycastle.crypto
Interface BlockCipher
- AESEngine, AESFastEngine, AESLightEngine, BlowfishEngine, CAST5Engine, CAST6Engine, CamelliaEngine, CBCBlockCipher, CFBBlockCipher, DESedeEngine, DESEngine, GOFBBlockCipher, GOST28147Engine, IDEAEngine, NoekeonEngine, NullEngine, OFBBlockCipher, OpenPGPCFBBlockCipher, PGPCFBBlockCipher, RC2Engine, RC532Engine, RC564Engine, RC6Engine, RijndaelEngine, SerpentEngine, SEEDEngine, SICBlockCipher, SkipjackEngine, TEAEngine, TwofishEngine, XTEAEngine
public interface BlockCipher
Block cipher engines are expected to conform to this interface.
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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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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getAlgorithmName
public String getAlgorithmName()
Return the name of the algorithm the cipher implements.
- the name of the algorithm the cipher implements.
getBlockSize
public int getBlockSize()
Return the block size for this cipher (in bytes).
- the block size for this cipher in bytes.
init
public void init(boolean forEncryption,
CipherParameters params)
throws IllegalArgumentException
Initialise the cipher.
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.
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).