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/*
* Copyright (c) 2010 SURFnet bv
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
OSSLEVPHashAlgorithm.h
Base class for OpenSSL hash algorithm classes
*****************************************************************************/
#ifndef _SOFTHSM_V2_OSSLEVPHASHALGORITHM_H
#define _SOFTHSM_V2_OSSLEVPHASHALGORITHM_H
#include "config.h"
#include "HashAlgorithm.h"
#include <openssl/evp.h>
class OSSLEVPHashAlgorithm : public HashAlgorithm
{
public:
// Base constructors
OSSLEVPHashAlgorithm() : HashAlgorithm() {
curCTX = NULL;
}
// Destructor
~OSSLEVPHashAlgorithm();
// Hashing functions
virtual bool hashInit();
virtual bool hashUpdate(const ByteString& data);
virtual bool hashFinal(ByteString& hashedData);
virtual int getHashSize() = 0;
protected:
virtual const EVP_MD* getEVPHash() const = 0;
private:
// Current hashing context
EVP_MD_CTX* curCTX;
};
#endif // !_SOFTHSM_V2_OSSLEVPHASHALGORITHM_H
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