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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 CRYPTO_KEM_COMBINER_H_
#define CRYPTO_KEM_COMBINER_H_
#include <repgp/repgp_def.h>
#include "types.h"
#include "config.h"
namespace rnp {
class PqcKemCombiner {
/* KDF for PQC key combiner according to
private:
/* The value domSep is a constant set to the UTF-8 encoding of the
string "OpenPGPCompositeKDFv1", i.e.
domSep := 4F 70 65 6E 50 47 50 43 6F 6D 70 6F 73 69 74 65 4B 44 46 76 31
len(domSep) = 0x15
We also concatenate len(domSep) here
*/
static std::vector<uint8_t>
domSeparation()
{
return std::vector<uint8_t>({0x4F, 0x70, 0x65, 0x6E, 0x50, 0x47, 0x50, 0x43,
0x6F, 0x6D, 0x70, 0x6F, 0x73, 0x69, 0x74, 0x65,
0x4B, 0x44, 0x46, 0x76, 0x31, 0x15});
}
public:
/* PQC KEM Combiner interface for OpenPGP PQC composite algorithms */
static std::vector<uint8_t> compute(const std::vector<uint8_t> &mlkem_key_share,
const std::vector<uint8_t> &ecc_key_share,
const std::vector<uint8_t> &ecc_ciphertext,
const std::vector<uint8_t> &ecc_pub_key,
const pgp_pubkey_alg_t alg_id);
};
} // namespace rnp
#endif