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xiaozhengsheng
2025-08-19 09:49:41 +08:00
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commit 6df0f7d96e
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components/libraries/crypto/nrf_crypto_eddsa.c Normal file
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/**
* Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
*
* 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, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, 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.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
*
*/
#include "nrf_crypto_error.h"
#include "nrf_crypto_ecc.h"
#include "nrf_crypto_eddsa.h"
#include "nrf_crypto_mem.h"
#include "app_util.h"
#include "sdk_macros.h"
#if NRF_CRYPTO_ECC_ENABLED && NRF_CRYPTO_ECC_ED25519_ENABLED
ret_code_t nrf_crypto_eddsa_sign(nrf_crypto_eddsa_sign_context_t * p_context,
nrf_crypto_ecc_private_key_t const * p_private_key,
uint8_t const * p_message,
size_t message_size,
uint8_t * p_signature,
size_t * p_signature_size)
{
ret_code_t result = NRF_SUCCESS;
void * p_allocated_context = NULL;
// Get pointer to header
nrf_crypto_internal_ecc_key_header_t const * p_private_key_header =
(nrf_crypto_internal_ecc_key_header_t const *)p_private_key;
// Verify parameters (zero-length message is valid per RFC 8032)
if (message_size > 0)
{
VERIFY_TRUE(p_message != NULL, NRF_ERROR_CRYPTO_INPUT_NULL);
}
result = nrf_crypto_internal_ecc_key_input_check(
p_private_key_header,
NRF_CRYPTO_INTERNAL_ECC_PRIVATE_KEY_INIT_VALUE);
VERIFY_SUCCESS(result);
result = nrf_crypto_internal_ecc_raw_output_prepare(p_signature,
p_signature_size,
NRF_CRYPTO_EDDSA_ED25519_SIGNATURE_SIZE);
VERIFY_SUCCESS(result);
// Allocate context if not provided
if (p_context == NULL && NRF_CRYPTO_BACKEND_ED25519_SIGN_CONTEXT_SIZE > 0)
{
p_allocated_context = NRF_CRYPTO_ALLOC(NRF_CRYPTO_BACKEND_ED25519_SIGN_CONTEXT_SIZE);
VERIFY_TRUE(p_allocated_context != NULL, NRF_ERROR_CRYPTO_ALLOC_FAILED);
p_context = p_allocated_context;
}
// Execute backend implementation
result = nrf_crypto_backend_ed25519_sign(p_context,
p_private_key,
p_message,
message_size,
p_signature);
// Deallocate context if allocated
if (p_allocated_context != NULL)
{
NRF_CRYPTO_FREE(p_allocated_context);
}
return result;
}
ret_code_t nrf_crypto_eddsa_verify(nrf_crypto_eddsa_verify_context_t * p_context,
nrf_crypto_ecc_public_key_t const * p_public_key,
uint8_t const * p_message,
size_t message_size,
uint8_t const * p_signature,
size_t signature_size)
{
ret_code_t result = NRF_SUCCESS;
void * p_allocated_context = NULL;
// Get pointer to header
nrf_crypto_internal_ecc_key_header_t const * p_public_key_header =
(nrf_crypto_internal_ecc_key_header_t const *)p_public_key;
// Verify parameters (zero-length message is valid per RFC 8032)
if (message_size > 0)
{
VERIFY_TRUE(p_message != NULL, NRF_ERROR_CRYPTO_INPUT_NULL);
}
result = nrf_crypto_internal_ecc_key_input_check(
p_public_key_header,
NRF_CRYPTO_INTERNAL_ECC_PUBLIC_KEY_INIT_VALUE);
VERIFY_SUCCESS(result);
result = nrf_crypto_internal_ecc_raw_input_check(p_signature,
signature_size,
NRF_CRYPTO_EDDSA_ED25519_SIGNATURE_SIZE);
VERIFY_SUCCESS(result);
// Allocate context if not provided
if (p_context == NULL && NRF_CRYPTO_BACKEND_ED25519_VERIFY_CONTEXT_SIZE > 0)
{
p_allocated_context = NRF_CRYPTO_ALLOC(NRF_CRYPTO_BACKEND_ED25519_VERIFY_CONTEXT_SIZE);
VERIFY_TRUE(p_allocated_context != NULL, NRF_ERROR_CRYPTO_ALLOC_FAILED);
p_context = p_allocated_context;
}
// Execute backend implementation
result = nrf_crypto_backend_ed25519_verify(p_context,
p_public_key,
p_message,
message_size,
p_signature);
// Deallocate context if allocated
if (p_allocated_context != NULL)
{
NRF_CRYPTO_FREE(p_allocated_context);
}
return result;
}
#endif // NRF_CRYPTO_ECC_ENABLED && NRF_CRYPTO_ECC_ED25519_ENABLED