org.bouncycastle.crypto

Interface OutputMACCalculator<T>

Type Parameters:

T - the parameters type for the MAC calculator.

All Known Implementing Classes:

FipsOutputMACCalculator

public interface OutputMACCalculator<T>

Base interface for a MAC calculator.

Method Summary

Modifier and Type	Method and Description
byte[]	getMAC() Return the MAC calculated on what has been written to the calculator's output stream.
int	getMAC(byte[] output, int off) Output the current MAC value for what has been written to the calculator's output stream.
int	getMACSize() Return the size of the MAC produced by this calculator in bytes.
UpdateOutputStream	getMACStream() Returns a stream that will accept data for the purpose of calculating a MAC.
T	getParameters() Return the parameters for this MAC calculator.
void	reset() Reset the calculator back to its initial state.

Method Detail

getParameters

T getParameters()

Return the parameters for this MAC calculator.

Returns:

the MAC calculator's parameters.

getMACSize

int getMACSize()

Return the size of the MAC produced by this calculator in bytes.

Returns:

MAC length in bytes.

getMACStream

UpdateOutputStream getMACStream()

Returns a stream that will accept data for the purpose of calculating a MAC. Use org.bouncycastle.util.io.TeeOutputStream if you want to accumulate the data on the fly as well.

Returns:

an UpdateOutputStream

getMAC

byte[] getMAC()

Return the MAC calculated on what has been written to the calculator's output stream.

Returns:

a MAC.

getMAC

int getMAC(byte[] output,
           int off)

Output the current MAC value for what has been written to the calculator's output stream.

Parameters:

output - output array to write the MAC to.

off - offset to start writing the MAC at.

Returns:

the number of bytes written

reset

void reset()

Reset the calculator back to its initial state.