AsymmetricBlockCipher
public class ElGamalEngine extends java.lang.Object implements AsymmetricBlockCipher
Constructor | Description |
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ElGamalEngine() |
Modifier and Type | Method | Description |
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int |
getInputBlockSize() |
Return the maximum size for an input block to this engine.
|
int |
getOutputBlockSize() |
Return the maximum size for an output block to this engine.
|
void |
init(boolean forEncryption,
CipherParameters param) |
initialise the ElGamal engine.
|
byte[] |
processBlock(byte[] in,
int inOff,
int inLen) |
Process a single block using the basic ElGamal algorithm.
|
public void init(boolean forEncryption, CipherParameters param)
init
in interface AsymmetricBlockCipher
forEncryption
- true if we are encrypting, false otherwise.param
- the necessary ElGamal key parameters.public int getInputBlockSize()
getInputBlockSize
in interface AsymmetricBlockCipher
public int getOutputBlockSize()
getOutputBlockSize
in interface AsymmetricBlockCipher
public byte[] processBlock(byte[] in, int inOff, int inLen)
processBlock
in interface AsymmetricBlockCipher
in
- the input array.inOff
- the offset into the input buffer where the data starts.inLen
- the length of the data to be processed.DataLengthException
- the input block is too large.