org.bouncycastle.util
Interface Memoable

All Known Subinterfaces:

SavableDigest

All Known Implementing Classes:

Blake3Digest, DSTU7564Digest, GeneralDigest, GOST3411_2012Digest, GOST3411Digest, LongDigest, MD2Digest, SkeinDigest, SkeinEngine, TigerDigest, WhirlpoolDigest, Zuc128CoreEngine

public interface Memoable

Interface for Memoable objects. Memoable objects allow the taking of a snapshot of their internal state via the copy() method and then resetting the object back to that state later using the reset() method.

Method Summary

Memoable	copy() Produce a copy of this object with its configuration and in its current state.
void	reset(Memoable other) Restore a copied object state into this object.

Method Detail

copy

public Memoable copy()

Produce a copy of this object with its configuration and in its current state.

The returned object may be used simply to store the state, or may be used as a similar object starting from the copied state.

reset

public void reset(Memoable other)

Restore a copied object state into this object.

Implementations of this method should try to avoid or minimise memory allocation to perform the reset.

Parameters:

other - an object originally copied from an object of the same type as this instance.

Throws:

java.lang.ClassCastException - if the provided object is not of the correct type.

MemoableResetException - if the other parameter is in some other way invalid.