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- #include "sdk_config.h"
- #include "nordic_common.h"
- #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC)
- #include <string.h>
- #include "nrf_crypto_ecc_shared.h"
- #include "nrf_crypto_ecdh_shared.h"
- #include "nrf_crypto_ecdh.h"
- #include "nrf_crypto_shared.h"
- #include "micro_ecc_backend_ecc.h"
- #include "micro_ecc_backend_shared.h"
- #include "uECC.h"
- ret_code_t nrf_crypto_backend_micro_ecc_ecdh_compute(
- void * p_context,
- void const * p_private_key,
- void const * p_public_key,
- uint8_t * p_shared_secret)
- {
- int result;
- nrf_crypto_backend_micro_ecc_common_key_t const * p_prv =
- (nrf_crypto_backend_micro_ecc_common_key_t const *)p_private_key;
- nrf_crypto_backend_micro_ecc_common_key_t const * p_pub =
- (nrf_crypto_backend_micro_ecc_common_key_t const *)p_public_key;
- nrf_crypto_ecc_curve_info_t const * p_info = p_prv->header.p_info;
- uECC_Curve p_micro_ecc_curve = nrf_crypto_backend_micro_ecc_curve_get(p_prv);
-
- if (!uECC_valid_public_key((uint8_t *)(&p_pub->key[0]), p_micro_ecc_curve))
- {
- return NRF_ERROR_CRYPTO_INTERNAL;
- }
-
- result = uECC_shared_secret((uint8_t const *)(&p_pub->key[0]),
- (uint8_t const *)(&p_prv->key[0]),
- p_shared_secret,
- p_micro_ecc_curve);
- #if ECC_BACKEND_SWAP_BYTES
- nrf_crypto_internal_swap_endian_in_place(p_shared_secret, p_info->raw_private_key_size);
- #else
- UNUSED_PARAMETER(p_info);
- #endif
- if (result == 0)
- {
- return NRF_ERROR_CRYPTO_INTERNAL;
- }
-
-
-
- return NRF_SUCCESS;
- }
- #endif
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