128 lines
5.9 KiB
C
128 lines
5.9 KiB
C
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/**
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* Copyright (c) 2018 - 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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#ifndef NRF_CRYPTO_EDDSA_H__
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#define NRF_CRYPTO_EDDSA_H__
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/** @file
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*
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* @defgroup nrf_crypto_eddsa Edwards-curve Digital Signature Algorithm (EdDSA)
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* @{
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* @ingroup nrf_crypto
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*
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* @brief Provides functionality related to Edwards-curve Digital Signature Algorithm (EdDSA).
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include "nrf_crypto_error.h"
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#include "nrf_crypto_ecc.h"
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#include "nrf_crypto_eddsa_shared.h"
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#include "nrf_crypto_eddsa_backend.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**< @brief Size of the EdDSA Ed25519 signature. */
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#define NRF_CRYPTO_EDDSA_ED25519_SIGNATURE_SIZE (2 * 256 / 8)
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/**< @brief Context used to store temporary data during the signing with EdDSA Ed25519. */
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typedef nrf_crypto_backend_ed25519_sign_context_t nrf_crypto_eddsa_sign_context_t;
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/**< @brief Context used to store temporary data during the verification with EdDSA Ed25519. */
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typedef nrf_crypto_backend_ed25519_verify_context_t nrf_crypto_eddsa_verify_context_t;
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/** @brief Sign a message using Edwards-curve Digital Signature Algorithm (EdDSA).
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*
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* @param[in] p_context Pointer to the temporary structure that holds context information.
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* If it is NULL, the required data is allocated with
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* @ref NRF_CRYPTO_ALLOC and freed at the end of the function.
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* @param[in] p_private_key Pointer to the structure that holds a private key.
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* @param[in] p_message Pointer to the message to sign.
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* @param[in] message_size Number of bytes in p_message.
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* @param[out] p_signature Pointer to the array where EdDSA signature is to be put. Minimum bytes required: @ref NRF_CRYPTO_EDDSA_ED25519_SIGNATURE_SIZE.
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* @param[in,out] p_signature_size Pointer to the maximum number of bytes that @p p_signature buffer
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* can hold on input, and to the actual number of bytes used by the
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* data on output (@ref NRF_CRYPTO_EDDSA_ED25519_SIGNATURE_SIZE).
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*
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* @return NRF_SUCCESS on success.
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*/
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ret_code_t nrf_crypto_eddsa_sign(nrf_crypto_eddsa_sign_context_t * p_context,
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nrf_crypto_ecc_private_key_t const * p_private_key,
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uint8_t const * p_message,
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size_t message_size,
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uint8_t * p_signature,
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size_t * p_signature_size);
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/** @brief Verify a message using Edwards-curve Digital Signature Algorithm (EdDSA).
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*
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* @param[in] p_context Pointer to the temporary structure that holds context information.
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* If it is NULL, necessary data is allocated with
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* @ref NRF_CRYPTO_ALLOC and freed at the end of the function.
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* @param[in] p_public_key Pointer to the structure that holds a public key.
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* @param[in] p_message Pointer to the message to verify.
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* @param[in] message_size Number of bytes in p_message.
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* @param[in] p_signature Pointer to the array that contains EdDSA signature.
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* @param[in] signature_size Number of bytes in p_signature.
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*
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* @return NRF_SUCCESS on success.
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*/
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ret_code_t nrf_crypto_eddsa_verify(nrf_crypto_eddsa_verify_context_t * p_context,
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nrf_crypto_ecc_public_key_t const * p_public_key,
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uint8_t const * p_message,
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size_t message_size,
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uint8_t const * p_signature,
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size_t signature_size);
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#ifdef __cplusplus
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}
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#endif
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/** @}
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*/
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#endif // NRF_CRYPTO_EDDSA_H__
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