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OpenSSLCryptoHash.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  * Copyright (c) 2002 Berin Lautenbach.  All rights reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  *
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer.
00012  *
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in
00015  *    the documentation and/or other materials provided with the
00016  *    distribution.
00017  *
00018  * 3. The end-user documentation included with the redistribution,
00019  *    if any, must include the following acknowledgment:
00020  *       "This product includes software developed by
00021  *                   Berin Lautenbach"
00022  *    Alternately, this acknowledgment may appear in the software itself,
00023  *    if and wherever such third-party acknowledgments normally appear.
00024  *
00025  * 4. The names "XSEC", "xml-security-c" and Berin Lautenbach must
00026  *    not be used to endorse or promote products derived from this
00027  *    software without prior written permission. For written
00028  *    permission, please contact berin@users.sourceforge.net.
00029  *
00030  * 5. Products derived from this software may not be called "xml-security-c",
00031  *    nor may "xml-security-c" appear in their name, without prior written
00032  *    permission of Berin Lautenbach.
00033  *
00034  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00035  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00036  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00037  * DISCLAIMED.  IN NO EVENT SHALL BERIN LAUTENBACH OR OTHER
00038  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00039  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00040  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00041  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00042  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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00044  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00045  * SUCH DAMAGE.
00046  * ====================================================================
00047  */
00048 
00049 /*
00050  * XSEC
00051  *
00052  * OpenSSLCryptoHash := OpenSSL Implementation of SHA1
00053  *
00054  */
00055 
00056 #ifndef OPENSSLCRYPTOHASHSHA1_INCLUDE
00057 #define OPENSSLCRYPTOHASHSHA1_INCLUDE
00058 
00059 #include <xsec/framework/XSECDefs.hpp>
00060 #include <xsec/enc/XSECCryptoHash.hpp>
00061 
00062 // OpenSSL Includes
00063 
00064 #include <openssl/evp.h>
00065 
00066 class DSIG_EXPORT OpenSSLCryptoHash : public XSECCryptoHash {
00067 
00068 
00069 public :
00070 
00071     // Constructors/Destructors
00072     
00073     OpenSSLCryptoHash(XSECCryptoHash::HashType alg);
00074     virtual ~OpenSSLCryptoHash();
00075 
00076     // Key activities
00077     virtual void        setKey(XSECCryptoKey * key) {}
00078 
00079     // Hashing Activities
00080     virtual void        reset(void);                    // Reset the hash
00081     virtual void        hash(unsigned char * data, 
00082                              unsigned int length);      // Hash some data
00083     virtual unsigned int finish(unsigned char * hash,
00084                                 unsigned int maxLength);// Finish and get hash
00085 
00086     // Get information
00087     virtual HashType getHashType(void);
00088 
00089 private:
00090 
00091     // Not implemented constructors
00092     OpenSSLCryptoHash();
00093 
00094     EVP_MD_CTX          m_mdctx;                        // Context for digest
00095     const EVP_MD        * mp_md;                        // Digest instance
00096     unsigned char       m_mdValue[EVP_MAX_MD_SIZE];     // Final output
00097     unsigned int        m_mdLen;                        // Length of digest
00098     HashType            m_hashType;                     // What type of hash is this?
00099 
00100 };
00101 
00102 #endif /* OPENSSLCRYPTOHASHSHA1_INCLUDE */

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