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- #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;
-
- nrf_crypto_internal_ecc_key_header_t const * p_private_key_header =
- (nrf_crypto_internal_ecc_key_header_t const *)p_private_key;
-
- 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);
-
- 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;
- }
-
- result = nrf_crypto_backend_ed25519_sign(p_context,
- p_private_key,
- p_message,
- message_size,
- p_signature);
-
- 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;
-
- nrf_crypto_internal_ecc_key_header_t const * p_public_key_header =
- (nrf_crypto_internal_ecc_key_header_t const *)p_public_key;
-
- 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);
-
- 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;
- }
-
- result = nrf_crypto_backend_ed25519_verify(p_context,
- p_public_key,
- p_message,
- message_size,
- p_signature);
-
- if (p_allocated_context != NULL)
- {
- NRF_CRYPTO_FREE(p_allocated_context);
- }
- return result;
- }
- #endif
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