172 lines
5.2 KiB
C
172 lines
5.2 KiB
C
/**
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* Copyright (c) 2019 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/**@file
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* @defgroup nrf_oberon_ecjpake EC-JPAKE
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* @ingroup nrf_oberon
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* @{
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* @brief Type declaration and APIs for EC-JPAKE.
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*
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*/
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#ifndef OCRYPTO_ECJPAKE_P256_H
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#define OCRYPTO_ECJPAKE_P256_H
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* EC-JPAKE-P256 public key and zero knowledge proof generation.
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*
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* @param[out] X Public key.
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* @param[out] V ZKP ephemeral public key.
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* @param[out] r ZKP signature.
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* @param G Generator. May be NULL to use the default generator.
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* @param x Secret key. 0 < x < group order.
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* @param v ZKP ephemeral secret key. 0 < v < group order.
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* @param id Identity of originator.
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* @param id_len Identity length.
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*
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* @retval 0 If inputs are valid.
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* @retval -1 Otherwise.
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*/
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int ocrypto_ecjpake_get_key(
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uint8_t X[64],
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uint8_t V[64],
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uint8_t r[32],
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const uint8_t G[64],
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const uint8_t x[32],
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const uint8_t v[32],
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const char *id, size_t id_len);
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/**
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* EC-JPAKE-P256 zero knowledge proof verification.
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*
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* @param G Generator. May be NULL to use the default generator.
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* @param X Public key.
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* @param V ZKP ephemeral public key.
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* @param r ZKP signature.
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* @param id Identity of originator.
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* @param id_len Identity length.
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*
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* @retval 0 If proof is valid.
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* @retval -1 Otherwise.
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*/
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int ocrypto_ecjpake_verify_key(
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const uint8_t G[64],
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const uint8_t X[64],
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const uint8_t V[64],
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const uint8_t r[32],
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const char *id, size_t id_len);
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/**
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* EC-JPAKE-P256 generator derivation.
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*
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* @param[out] G Generator.
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* @param X1 Public key 1.
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* @param X2 Public key 2.
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* @param X3 Public key 3.
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*
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* @retval 0 If the generator is valid.
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* @retval -1 Otherwise.
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*/
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int ocrypto_ecjpake_get_generator(
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uint8_t G[64],
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const uint8_t X1[64],
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const uint8_t X2[64],
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const uint8_t X3[64]);
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/**
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* EC-JPAKE-P256 read shared secret.
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*
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* @param[out] rs Reduced shared secret.
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* @param secret Shared secret.
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* @param secret_len Secret length.
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*/
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void ocrypto_ecjpake_read_shared_secret(
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uint8_t rs[32],
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const uint8_t *secret, size_t secret_len);
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/**
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* EC-JPAKE-P256 shared secret handling.
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*
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* @param[out] xs Client/server secret key.
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* @param x2 Secret key 2.
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* @param rs Reduced shared secret.
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*
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* @retval 0 If the derived secret key is valid.
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* @retval -1 Otherwise.
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*/
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int ocrypto_ecjpake_process_shared_secret(
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uint8_t xs[32],
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const uint8_t x2[32],
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const uint8_t rs[32]);
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/**
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* EC-JPAKE-P256 secret key generation.
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*
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* @param[out] secret Resulting premaster secret.
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* @param Xr Remote client/server public key.
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* @param X2 Remote public key 2.
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* @param xs Client/server secret key.
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* @param x2 Secret key 2.
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*
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* @retval 0 If the key is valid.
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* @retval -1 Otherwise.
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*/
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int ocrypto_ecjpake_get_secret_key(
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uint8_t secret[32],
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const uint8_t Xr[64],
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const uint8_t X2[64],
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const uint8_t xs[32],
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const uint8_t x2[32]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* #ifndef OCRYPTO_ECJPAKE_P256_H */
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/** @} */
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