mirror of
https://github.com/pocoproject/poco.git
synced 2025-03-11 12:37:05 +01:00
106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
//
|
|
// 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
|
|
|