OpenSSLCryptoHash.hpp

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/*
 * Copyright 2002-2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * XSEC
 *
 * OpenSSLCryptoHash := OpenSSL Implementation of SHA1
 *
 * Author(s): Berin Lautenbach
 *
 * $Id: OpenSSLCryptoHash.hpp,v 1.8 2005/06/04 11:30:26 blautenb Exp $
 *
 */

#ifndef OPENSSLCRYPTOHASHSHA1_INCLUDE
#define OPENSSLCRYPTOHASHSHA1_INCLUDE

#include <xsec/framework/XSECDefs.hpp>
#include <xsec/enc/XSECCryptoHash.hpp>

// OpenSSL Includes

#if defined (HAVE_OPENSSL)

#   include <openssl/evp.h>

class DSIG_EXPORT OpenSSLCryptoHash : public XSECCryptoHash {

public :


    OpenSSLCryptoHash(XSECCryptoHash::HashType alg);
    virtual ~OpenSSLCryptoHash();
    

    
    virtual void        setKey(XSECCryptoKey * key) {}



    virtual void        reset(void);

    virtual void        hash(unsigned char * data, 
                             unsigned int length);
    virtual unsigned int finish(unsigned char * hash,
                                unsigned int maxLength);// Finish and get hash



    virtual HashType getHashType(void);



private:

    // Not implemented constructors
    OpenSSLCryptoHash();

    EVP_MD_CTX          m_mdctx;                        // Context for digest
    const EVP_MD        * mp_md;                        // Digest instance
    unsigned char       m_mdValue[EVP_MAX_MD_SIZE];     // Final output
    unsigned int        m_mdLen;                        // Length of digest
    HashType            m_hashType;                     // What type of hash is this?

};

#endif /* HAVE_OPENSSL */
#endif /* OPENSSLCRYPTOHASHSHA1_INCLUDE */

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