aria2/src/messageDigest.cc

85 lines
3.1 KiB
C++

/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "messageDigest.h"
#include "Util.h"
namespace aria2 {
const std::string MessageDigestContext::SHA1("sha1");
const std::string MessageDigestContext::SHA256("sha256");
const std::string MessageDigestContext::MD5("md5");
static MessageDigestContext::DigestAlgoMap::value_type digests[] = {
#ifdef HAVE_LIBSSL
MessageDigestContext::DigestAlgoMap::value_type("md5", EVP_md5()),
MessageDigestContext::DigestAlgoMap::value_type("sha1", EVP_sha1()),
# ifdef HAVE_EVP_SHA256
MessageDigestContext::DigestAlgoMap::value_type("sha256", EVP_sha256()),
# endif // HAVE_EVP_SHA256
#elif HAVE_LIBGCRYPT
MessageDigestContext::DigestAlgoMap::value_type("md5", GCRY_MD_MD5),
MessageDigestContext::DigestAlgoMap::value_type("sha1", GCRY_MD_SHA1),
MessageDigestContext::DigestAlgoMap::value_type("sha256", GCRY_MD_SHA256),
#endif // HAVE_LIBGCRYPT
};
MessageDigestContext::DigestAlgoMap
MessageDigestContext::digestAlgos(&digests[0],
&digests[sizeof(digests)/sizeof(DigestAlgoMap::value_type)]);
std::string MessageDigestContext::digestFinal()
{
size_t length = digestLength(algo);
unsigned char* rawMD = new unsigned char[length];
digestFinal(rawMD);
std::string rawMDString(&rawMD[0], &rawMD[length]);
delete [] rawMD;
return rawMDString;
}
std::string MessageDigestContext::getSupportedAlgoString()
{
std::string algos;
for(DigestAlgoMap::const_iterator itr = digestAlgos.begin();
itr != digestAlgos.end(); ++itr) {
algos += (*itr).first+", ";
}
return Util::trim(algos, ", ");
}
} // namespace aria2