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/*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RNP_FINGERPRINT_HPP_
#define RNP_FINGERPRINT_HPP_
#include <array>
#include <vector>
#include <cstring>
#include "config.h"
#include <repgp/repgp_def.h>
typedef struct pgp_key_pkt_t pgp_key_pkt_t;
/* Size of the keyid */
#define PGP_KEY_ID_SIZE 8
/* Size of the fingerprint */
#define PGP_FINGERPRINT_V3_SIZE 16
#define PGP_FINGERPRINT_V4_SIZE 20
#define PGP_FINGERPRINT_V5_SIZE 32
#define PGP_MAX_FINGERPRINT_SIZE 32
#define PGP_FINGERPRINT_HEX_SIZE (PGP_MAX_FINGERPRINT_SIZE * 2) + 1
static_assert(PGP_MAX_FINGERPRINT_SIZE >= PGP_FINGERPRINT_V4_SIZE, "FP size mismatch.");
static_assert(PGP_MAX_FINGERPRINT_SIZE >= PGP_FINGERPRINT_V5_SIZE, "FP size mismatch.");
#if defined(ENABLE_CRYPTO_REFRESH)
#define PGP_FINGERPRINT_V6_SIZE 32
static_assert(PGP_MAX_FINGERPRINT_SIZE >= PGP_FINGERPRINT_V6_SIZE, "FP size mismatch.");
static_assert(PGP_FINGERPRINT_V5_SIZE == PGP_FINGERPRINT_V6_SIZE, "FP size mismatch.");
#endif
namespace pgp {
using KeyID = std::array<uint8_t, PGP_KEY_ID_SIZE>;
using KeyGrip = std::array<uint8_t, PGP_KEY_GRIP_SIZE>;
class Fingerprint {
std::vector<uint8_t> fp_;
KeyID keyid_;
public:
Fingerprint();
Fingerprint(const uint8_t *data, size_t size);
Fingerprint(const pgp_key_pkt_t &src);
bool operator==(const Fingerprint &src) const;
bool operator!=(const Fingerprint &src) const;
static bool size_valid(size_t size) noexcept;
const KeyID & keyid() const noexcept;
const std::vector<uint8_t> &vec() const noexcept;
const uint8_t * data() const noexcept;
size_t size() const noexcept;
};
using Fingerprints = std::vector<Fingerprint>;
} // namespace pgp
namespace std {
template <> struct hash<pgp::Fingerprint> {
std::size_t
operator()(pgp::Fingerprint const &fp) const noexcept
{
/* since fingerprint value is hash itself, we may use its low bytes */
size_t res = 0;
size_t cpy = std::min(sizeof(res), fp.size());
std::memcpy(&res, fp.data(), cpy);
return res;
}
};
} // namespace std
#endif