Interface BlockCipher
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- All Implemented Interfaces:
public interface BlockCipher
Block cipher engines are expected to conform to this interface.
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Method Summary
Modifier and Type Method Description abstract void
init(boolean forEncryption, CipherParameters params)
Initialise the cipher. abstract String
getAlgorithmName()
Return the name of the algorithm the cipher implements. abstract int
getBlockSize()
Return the block size for this cipher (in bytes). abstract int
processBlock(Array<byte> in, int inOff, Array<byte> out, int outOff)
Process one block of input from the array in and write it to the out array. abstract void
reset()
Reset the cipher. -
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Method Detail
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init
abstract void init(boolean forEncryption, CipherParameters params)
Initialise 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.
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getAlgorithmName
abstract String getAlgorithmName()
Return the name of the algorithm the cipher implements.
- Returns:
the name of the algorithm the cipher implements.
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getBlockSize
abstract int getBlockSize()
Return the block size for this cipher (in bytes).
- Returns:
the block size for this cipher in bytes.
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processBlock
abstract int processBlock(Array<byte> in, int inOff, Array<byte> out, int outOff)
Process 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.
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reset
abstract 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).
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