/**************************************************************************
* Copyright (c) 2001 by Punch Telematix. All rights reserved. *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions *
* are met: *
* 1. Redistributions of source code must retain the above copyright *
* notice, this list of conditions and the following disclaimer. *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* 3. Neither the name of Punch Telematix nor the names of *
* other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission.*
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED *
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. *
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**************************************************************************/
/*
** $Id: SignatureSpi.java,v 1.2 2006/04/18 11:35:28 cvs Exp $
*/
package java.security;
import java.security.spec.AlgorithmParameterSpec;
public abstract class SignatureSpi {
protected SecureRandom appRandom;
public SignatureSpi(){}
public Object clone() throws CloneNotSupportedException{
return super.clone();
}
/**
** @deprecated
*/
protected abstract Object engineGetParameter(String param) throws InvalidParameterException;
protected abstract void engineInitSign(PrivateKey privateKey) throws InvalidKeyException;
protected abstract void engineInitVerify(PublicKey publicKey) throws InvalidKeyException;
/**
** @deprecated Replaced by engineSetParameter.
*/
protected abstract void engineSetParameter(String param, Object value) throws InvalidParameterException;
protected abstract byte[] engineSign() throws SignatureException;
protected abstract void engineUpdate(byte b) throws SignatureException;
protected abstract void engineUpdate(byte[] b, int off, int len) throws SignatureException;
protected abstract boolean engineVerify(byte[] sigBytes) throws SignatureException;
/**
** method was added in 1.2. It should be abstract, but it cannot be for backworth compatibility.
** The implementation does nothing.
**
** @remark should be overridden
*/
protected void engineInitSign(PrivateKey privateKey, SecureRandom random) throws InvalidKeyException {}
/**
** method was added in 1.2. It should be abstract, but it cannot be for backworth compatibility.
** The implementation does nothing.
**
** @remark should be overridden
*/
protected void engineSetParameter(AlgorithmParameterSpec params) throws InvalidAlgorithmParameterException{
}
/**
** method was added in 1.2. It should be abstract, but it cannot be for backworth compatibility.
** The implementation does nothing. It simply returns 0.
**
** @remark should be overridden
*/
protected int engineSign(byte[] outbuf, int offset, int len) throws SignatureException{
return 0;
}
/**
* The default implementation throws a UnsupportOperationException
* @return the parameters used with this signature engine,
* or null not using any parameters
* @since 1.4
*/
protected AlgorithmParameters engineGetParameters() {
throw new UnsupportedOperationException();
}
/**
* @since 1.4
* @throws SignatureException by default...
*/
protected boolean engineVerify(byte[] sigBytes, int offset, int length)
throws SignatureException {
throw new SecurityException("Unsupported method !");
}
}