/usr/include/dar/crypto.hpp is in libdar-dev 2.5.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2052 Denis Corbin
//
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// to contact the author : http://dar.linux.free.fr/email.html
/*********************************************************************/
/// \file crypto.hpp
/// \brief the crypto algoritm definition
/// \ingroup API
#ifndef CRYPTO_HPP
#define CRYPTO_HPP
extern "C"
{
}
#include "/usr/include/dar/libdar_my_config.h"
#include <string>
#include "/usr/include/dar/datetime.hpp"
#include <list>
namespace libdar
{
/// \ingroup Private
/// @}
/// the different cypher available for encryption (strong or weak)
/// values to be used as argument of libdar API calls
/// \ingroup API
enum crypto_algo
{
crypto_none, ///< no encryption
crypto_scrambling, ///< scrambling weak encryption
crypto_blowfish, ///< blowfish strong encryption
crypto_aes256, ///< AES 256 strong encryption
crypto_twofish256, ///< twofish 256 strong encryption
crypto_serpent256, ///< serpent 256 strong encryption
crypto_camellia256 ///< camellia 256 strong encryption
};
struct signator
{
enum
{
good, //< good signature
bad, //< key correct bug signature tempered
unknown_key, //< no key found to check the signature
error //< signature failed to be checked for other error
} result; //< status of the signing
enum
{
valid, //< the key we have is neither expired nor revoked
expired, //< the key we have has expired
revoked //< the key we have has been revoked
} key_validity; //< validity of the key used to verify the signature
std::string fingerprint; //< fingerprint of the key
datetime signing_date; //< date of signature
datetime signature_expiration_date; //< date of expiration of this signature
bool operator < (const signator & ref) const { return fingerprint < ref.fingerprint; };
bool operator == (const signator & ref) const { return result == ref.result && key_validity == ref.key_validity && fingerprint == ref.fingerprint && signature_expiration_date == ref.signature_expiration_date; };
};
extern std::string crypto_algo_2_string(crypto_algo algo);
extern char crypto_algo_2_char(crypto_algo a);
extern crypto_algo char_2_crypto_algo(char a);
extern bool same_signatories(const std::list<signator> & a, const std::list<signator> & b);
/// @}
} // end of namespace
#endif
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