Package com.coderslagoon.crypto.estreamj.framework

Interface ICipherMAC

All Superinterfaces:

ICipher

All Known Implementing Classes:

Nil

public interface ICipherMAC
extends ICipher

Stream ciphers which also do MAC computation implement this interface.

Field Summary

Fields inherited from interface com.coderslagoon.crypto.estreamj.framework.ICipher

MODE_DECRYPT, MODE_ENCRYPT

Method Summary

Modifier and Type	Method	Description
void	finalize(byte[] macBuf, int macOfs)	Finalize and compute the MAC.
int	getMacSize()
void	processAAD(byte[] buf, int ofs, int len)	Processes AAD (additional authentication data).

Methods inherited from interface com.coderslagoon.crypto.estreamj.framework.ICipher

erase, getKeySize, getNonceSize, getWordSize, isPatented, process, reset, setupKey, setupNonce

Method Details

getMacSize

int getMacSize()

Returns:

MAC size in bytes

processAAD

void processAAD(byte[] buf,
 int ofs,
 int len)
         throws ESJException

Processes AAD (additional authentication data).

Parameters:

buf - input buffer

ofs - where to start reading from the input buffer

len - number of bytes to process, must be aligned to the cipher's word size except on the last call where an arbitrary size can be used

Throws:

ESJException - in any error occurred

finalize

void finalize(byte[] macBuf,
 int macOfs)
       throws ESJException

Finalize and compute the MAC.

Parameters:

macBuf - MAC buffer

macOfs - where to write MAC

Throws:

ESJException - if any error occurred