org.bouncycastle.crypto.fips

Class FipsOutputDigestCalculator<T>

java.lang.Object

org.bouncycastle.crypto.fips.FipsOutputDigestCalculator<T>

Type Parameters:

T - the parameters type associated with the final implementation of this calculator.

All Implemented Interfaces:

java.lang.Cloneable, OutputDigestCalculator<T>

public abstract class FipsOutputDigestCalculator<T>
extends java.lang.Object
implements OutputDigestCalculator<T>

Base class for the approved mode OutputDigestCalculator implementations.

Method Summary

Modifier and Type	Method and Description
abstract FipsOutputDigestCalculator<T>	clone() Return a clone of this calculator.
byte[]	getDigest() Return the digest calculated on what has been written to the calculator's output stream.
abstract int	getDigest(byte[] output, int offSet) Output the current digest value for what has been written to the calculator's output stream.
abstract int	getDigestBlockSize() Return the size, in bytes, of the internal block used by the digest in this calculator.
abstract int	getDigestSize() Return the size of the digest produced by this calculator in bytes.
abstract UpdateOutputStream	getDigestStream() Returns a stream that will accept data for the purpose of calculating a digest.
abstract T	getParameters() Return the parameters for this digest calculator.
abstract void	reset() Reset the calculator back to its initial state.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getDigest

public final byte[] getDigest()

Description copied from interface: OutputDigestCalculator

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

Specified by:

getDigest in interface OutputDigestCalculator<T>

Returns:

a digest.

getParameters

public abstract T getParameters()

Description copied from interface: OutputDigestCalculator

Return the parameters for this digest calculator.

Specified by:

getParameters in interface OutputDigestCalculator<T>

Returns:

the digest calculator's parameters.

getDigestSize

public abstract int getDigestSize()

Description copied from interface: OutputDigestCalculator

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

Specified by:

getDigestSize in interface OutputDigestCalculator<T>

Returns:

digest length in bytes.

getDigestBlockSize

public abstract int getDigestBlockSize()

Description copied from interface: OutputDigestCalculator

Return the size, in bytes, of the internal block used by the digest in this calculator.

Specified by:

getDigestBlockSize in interface OutputDigestCalculator<T>

Returns:

internal block size in bytes.

getDigestStream

public abstract UpdateOutputStream getDigestStream()

Description copied from interface: OutputDigestCalculator

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

Specified by:

getDigestStream in interface OutputDigestCalculator<T>

Returns:

an OutputStream

getDigest

public abstract int getDigest(byte[] output,
                              int offSet)

Description copied from interface: OutputDigestCalculator

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

Specified by:

getDigest in interface OutputDigestCalculator<T>

Parameters:

output - output array to write the digest to.

offSet - offset to start writing the digest at..

Returns:

the number of bytes written.

reset

public abstract void reset()

Description copied from interface: OutputDigestCalculator

Reset the calculator back to its initial state.

Specified by:

reset in interface OutputDigestCalculator<T>

clone

public abstract FipsOutputDigestCalculator<T> clone()
                                             throws java.lang.CloneNotSupportedException

Description copied from interface: OutputDigestCalculator

Return a clone of this calculator.

Specified by:

clone in interface OutputDigestCalculator<T>

Overrides:

clone in class java.lang.Object

Returns:

a clone of the digest calculator.

Throws:

java.lang.CloneNotSupportedException - if cloning is not possible.