Md5.hxx
上传用户:sy_wanhua
上传日期:2013-07-25
资源大小:3048k
文件大小:5k
- #ifndef MD5_HXX_
- #define MD5_HXX_
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. 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. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const Md5_hxx_version =
- "$Id: Md5.hxx,v 1.1 2001/03/26 10:35:31 icahoon Exp $";
- #include "Data.hxx"
- #include "vmd5.h"
- /** Infrastructure common to VOCAL.
- */
- namespace Vocal
- {
- /** Infrastructure common to VOCAL to do cryptographic things.
- */
- namespace Crypto
- {
- /** class to implement the MD5 message digest algorithm.
- */
- class Md5
- {
- public:
- /// constructor
- Md5();
- /// copy constructor -- returns the same state as the original
- Md5(const Md5& src);
- /// initialize and take a data
- Md5(const Data& data);
- /// equality operator
- bool operator==(const Md5& src) const;
- /// less than operator
- bool operator<(const Md5& src) const;
- /// greater than operator
- bool operator>(const Md5& src) const;
- /// set the digest in an empty md5
- void digest(const Data& data);
- /// hash function
- size_t hashfn() const;
- /// destructor
- ~Md5();
- private:
- MD5Context myContext;
- unsigned char myDigest[16];
- };
- inline
- Md5::Md5()
- {
- memset(myDigest, 0, 16);
- }
- inline
- Md5::Md5(const Md5& src)
- {
- memcpy(myDigest, src.myDigest, 16);
- }
- inline
- Md5::Md5(const Data& data)
- {
- MD5Init(&myContext);
- MD5Update(&myContext,
- reinterpret_cast<const unsigned char*>(data.getDataBuf()),
- static_cast<unsigned int>(data.length()));
- MD5Final(myDigest, &myContext);
- }
- inline void
- Md5::digest(const Data& data)
- {
- MD5Init(&myContext);
- MD5Update(&myContext,
- reinterpret_cast<const unsigned char*>(data.getDataBuf()),
- static_cast<unsigned int>(data.length()));
- MD5Final(myDigest, &myContext);
- }
- inline size_t
- Md5::hashfn() const
- {
- return *reinterpret_cast<size_t const*>(myDigest);
- }
- inline
- Md5::~Md5()
- {
- }
- inline bool
- Md5::operator==(const Md5& src) const
- {
- if(&src == this)
- {
- return true;
- }
- else
- {
- return (memcmp(&myDigest, &src.myDigest, 16) == 0);
- }
- }
- inline bool
- Md5::operator<(const Md5& src) const
- {
- if(&src == this)
- {
- return false;
- }
- else
- {
- return (memcmp(&myDigest, &src.myDigest, 16) < 0);
- }
- }
- inline bool
- Md5::operator>(const Md5& src) const
- {
- if(&src == this)
- {
- return false;
- }
- else
- {
- return (memcmp(&myDigest, &src.myDigest, 16) > 0);
- }
- }
- } // namespace Crypto
- } // namespace Vocal
- #endif