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/*
Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/key.cc
* @brief Key class.
*/
#include "key.h"
#include "AS_DCP.h"
#include "KM_prng.h"
#include "KM_util.h"
#include <sstream>
#include <string>
#include <iomanip>
using std::string;
using std::stringstream;
using std::setw;
using std::setfill;
using namespace dcp;
Key::Key ()
: _value (new uint8_t[ASDCP::KeyLen])
{
Kumu::FortunaRNG rng;
rng.FillRandom (_value, ASDCP::KeyLen);
}
Key::Key (uint8_t const * value)
: _value (new uint8_t[ASDCP::KeyLen])
{
memcpy (_value, value, ASDCP::KeyLen);
}
Key::Key (string value)
: _value (new uint8_t[ASDCP::KeyLen])
{
unsigned int length;
Kumu::hex2bin (value.c_str(), _value, ASDCP::KeyLen, &length);
}
Key::Key (Key const & other)
: _value (new uint8_t[ASDCP::KeyLen])
{
memcpy (_value, other._value, ASDCP::KeyLen);
}
Key::~Key ()
{
delete[] _value;
}
Key &
Key::operator= (Key const & other)
{
if (this == &other) {
return *this;
}
memcpy (_value, other._value, ASDCP::KeyLen);
return *this;
}
string
Key::hex () const
{
stringstream g;
for (unsigned int i = 0; i < ASDCP::KeyLen; ++i) {
g << setw(2) << setfill('0') << std::hex << static_cast<int> (_value[i]);
}
return g.str ();
}
bool
dcp::operator== (Key const & a, Key const & b)
{
return memcmp (a.value(), b.value(), ASDCP::KeyLen) == 0;
}
bool
dcp::operator!= (Key const & a, Key const & b)
{
return !(a == b);
}
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