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added DigestEngine::digestFromHex(const std::string& digest) method

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Marian Krivos
2012-04-28 09:32:25 +00:00
parent bd59670069
commit a4931bb9af
2 changed files with 232 additions and 193 deletions
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172
Foundation/src/DigestEngine.cpp
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@@ -1,68 +1,104 @@
//
// DigestEngine.cpp
//
// $Id: //poco/1.4/Foundation/src/DigestEngine.cpp#1 $
//
// Library: Foundation
// Package: Crypt
// Module: DigestEngine
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/DigestEngine.h"
namespace Poco {
DigestEngine::DigestEngine()
{
}
DigestEngine::~DigestEngine()
{
}
std::string DigestEngine::digestToHex(const Digest& bytes)
{
static const char digits[] = "0123456789abcdef";
std::string result;
result.reserve(bytes.size()*2);
for (Digest::const_iterator it = bytes.begin(); it != bytes.end(); ++it)
{
unsigned char c = *it;
result += digits[(c >> 4) & 0xF];
result += digits[c & 0xF];
}
return result;
}
} // namespace Poco
//
// DigestEngine.cpp
//
// $Id: //poco/1.4/Foundation/src/DigestEngine.cpp#1 $
//
// Library: Foundation
// Package: Crypt
// Module: DigestEngine
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/DigestEngine.h"
#include "Poco/Exception.h"
namespace Poco {
DigestEngine::DigestEngine()
{
}
DigestEngine::~DigestEngine()
{
}
std::string DigestEngine::digestToHex(const Digest& bytes)
{
static const char digits[] = "0123456789abcdef";
std::string result;
result.reserve(bytes.size()*2);
for (Digest::const_iterator it = bytes.begin(); it != bytes.end(); ++it)
{
unsigned char c = *it;
result += digits[(c >> 4) & 0xF];
result += digits[c & 0xF];
}
return result;
}
DigestEngine::Digest DigestEngine::digestFromHex(const std::string& digest)
{
if (digest.size() % 2 != 0)
throw DataFormatException();
Digest result;
result.reserve(digest.size()/2);
for (std::size_t i = 0; i < digest.size(); ++i)
{
int c = 0;
// first upper 4 bits
if (digest[i] >= '0' && digest[i] <= '9')
c = digest[i] - '0';
else if (digest[i] >= 'a' && digest[i] <= 'f')
c = digest[i] - 'a'+10;
else if (digest[i] >= 'A' && digest[i] <= 'F')
c = digest[i] - 'A'+10;
else
throw DataFormatException();
c <<= 4;
++i;
if (digest[i] >= '0' && digest[i] <= '9')
c += digest[i] - '0';
else if (digest[i] >= 'a' && digest[i] <= 'f')
c += digest[i] - 'a'+10;
else if (digest[i] >= 'A' && digest[i] <= 'F')
c += digest[i] - 'A'+10;
else
throw DataFormatException();
result.push_back(static_cast<unsigned char>(c));
}
return result;
}
} // namespace Poco