/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp 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,
+ libdcp 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.
-
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ 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.
*/
+
/** @file src/key.cc
- * @brief Key class.
+ * @brief Key class
*/
+
#include "key.h"
-#include "AS_DCP.h"
-#include "KM_prng.h"
-#include "KM_util.h"
-#include <sstream>
+#include "dcp_assert.h"
+#include <asdcp/AS_DCP.h>
+#include <asdcp/KM_prng.h>
+#include <asdcp/KM_util.h>
#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])
+
+Key::Key (int length)
+ : _value (new uint8_t[length])
+ , _length (length)
{
Kumu::FortunaRNG rng;
- rng.FillRandom (_value, ASDCP::KeyLen);
+ rng.FillRandom (_value, _length);
}
-Key::Key (uint8_t const * value)
- : _value (new uint8_t[ASDCP::KeyLen])
+
+Key::Key (uint8_t const * value, int length)
+ : _value (new uint8_t[length])
+ , _length (length)
{
- memcpy (_value, value, ASDCP::KeyLen);
+ memcpy (_value, value, _length);
}
+
Key::Key (string value)
- : _value (new uint8_t[ASDCP::KeyLen])
+ : _value (new uint8_t[value.length() / 2])
+ , _length (value.length() / 2)
{
- unsigned int length;
- Kumu::hex2bin (value.c_str(), _value, ASDCP::KeyLen, &length);
+ unsigned int length_done;
+ Kumu::hex2bin (value.c_str(), _value, _length, &length_done);
}
+
Key::Key (Key const & other)
- : _value (new uint8_t[ASDCP::KeyLen])
+ : _value (new uint8_t[other._length])
+ , _length (other._length)
{
- memcpy (_value, other._value, ASDCP::KeyLen);
+ memcpy (_value, other._value, _length);
}
+
Key::~Key ()
{
delete[] _value;
}
+
Key &
Key::operator= (Key const & other)
{
if (this == &other) {
return *this;
}
-
- memcpy (_value, other._value, ASDCP::KeyLen);
+
+ _length = other._length;
+ memcpy (_value, other._value, _length);
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]);
+ char buffer[_length * 2 + 1];
+
+ char* p = buffer;
+ for (int i = 0; i < _length; ++i) {
+#ifdef LIBDCP_WINDOWS
+ __mingw_snprintf (p, 3, "%02hhx", _value[i]);
+#else
+ snprintf (p, 3, "%02hhx", _value[i]);
+#endif
+ p += 2;
}
- return g.str ();
+ return buffer;
}
+
bool
dcp::operator== (Key const & a, Key const & b)
{
- return memcmp (a.value(), b.value(), ASDCP::KeyLen) == 0;
+ return a.length() == b.length() && memcmp(a.value(), b.value(), a.length()) == 0;
}
+
bool
dcp::operator!= (Key const & a, Key const & b)
{
return !(a == b);
}
-