123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341 |
- /**
- * 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 "sdk_config.h"
- #include "nordic_common.h"
- #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC)
- #include <stdbool.h>
- #include <string.h>
- #include <stddef.h>
- #include "app_util.h"
- #include "nrf_crypto_ecc.h"
- #include "nrf_crypto_rng.h"
- #include "nrf_crypto_shared.h"
- #include "micro_ecc_backend_ecc.h"
- #include "micro_ecc_backend_shared.h"
- #include "uECC.h"
- typedef uECC_Curve (*micro_ecc_curve_fn_t)(void);
- int nrf_crypto_backend_micro_ecc_rng_callback(uint8_t * dest, unsigned size)
- {
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_RNG)
- ret_code_t result;
- result = nrf_crypto_rng_vector_generate(dest, size);
- // Return values compatible with mbed TLS
- if (result != NRF_SUCCESS)
- {
- return 0;
- }
- return 1;
- #else
- UNUSED_PARAMETER(dest);
- UNUSED_PARAMETER(size);
- return 0;
- #endif
- }
- uECC_Curve nrf_crypto_backend_micro_ecc_curve_get(
- nrf_crypto_backend_micro_ecc_common_key_t const * p_key)
- {
- nrf_crypto_internal_ecc_key_header_t const * p_key_header =
- (nrf_crypto_internal_ecc_key_header_t const *)p_key;
- //lint -save -e611 (Suspicious cast)
- micro_ecc_curve_fn_t micro_ecc_curve_fn =
- (micro_ecc_curve_fn_t)p_key_header->p_info->p_backend_data;
- //lint -restore
- uECC_Curve p_micro_ecc_curve = micro_ecc_curve_fn();
- return p_micro_ecc_curve;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_key_pair_generate(
- void * p_context,
- void * p_private_key,
- void * p_public_key)
- {
- int result;
- nrf_crypto_backend_micro_ecc_common_key_t * p_prv =
- (nrf_crypto_backend_micro_ecc_common_key_t *)p_private_key;
- nrf_crypto_backend_micro_ecc_common_key_t * p_pub =
- (nrf_crypto_backend_micro_ecc_common_key_t *)p_public_key;
- uECC_Curve p_micro_ecc_curve = nrf_crypto_backend_micro_ecc_curve_get(p_prv);
- uECC_set_rng(nrf_crypto_backend_micro_ecc_rng_callback);
- result = uECC_make_key((uint8_t *)(&p_pub->key[0]),
- (uint8_t *)(&p_prv->key[0]),
- p_micro_ecc_curve);
- if (result == 0)
- {
- return NRF_ERROR_CRYPTO_INTERNAL;
- }
- return NRF_SUCCESS;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_public_key_calculate(
- void * p_context,
- void const * p_private_key,
- void * p_public_key)
- {
- 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 * p_pub =
- (nrf_crypto_backend_micro_ecc_common_key_t *)p_public_key;
- uECC_Curve p_micro_ecc_curve = nrf_crypto_backend_micro_ecc_curve_get(p_prv);
- result = uECC_compute_public_key((uint8_t *)(&p_prv->key[0]),
- (uint8_t *)(&p_pub->key[0]),
- p_micro_ecc_curve);
- if (result == 0)
- {
- return NRF_ERROR_CRYPTO_INTERNAL;
- }
- return NRF_SUCCESS;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_private_key_from_raw(
- void * p_private_key,
- uint8_t const * p_raw_data)
- {
- nrf_crypto_backend_micro_ecc_common_key_t * p_prv =
- (nrf_crypto_backend_micro_ecc_common_key_t *)p_private_key;
- nrf_crypto_ecc_curve_info_t const * p_info = p_prv->header.p_info;
- #if ECC_BACKEND_SWAP_BYTES
- nrf_crypto_internal_swap_endian((uint8_t *)(&p_prv->key[0]),
- p_raw_data,
- p_info->raw_private_key_size);
- #else
- memcpy(&p_prv->key[0], p_raw_data, p_info->raw_private_key_size);
- #endif
- return NRF_SUCCESS;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_private_key_to_raw(
- void const * p_private_key,
- uint8_t * p_raw_data)
- {
- 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_ecc_curve_info_t const * p_info = p_prv->header.p_info;
- #if ECC_BACKEND_SWAP_BYTES
- nrf_crypto_internal_swap_endian(p_raw_data,
- (uint8_t *)(&p_prv->key[0]),
- p_info->raw_private_key_size);
- #else
- memcpy(p_raw_data, &p_prv->key[0], p_info->raw_private_key_size);
- #endif
- return NRF_SUCCESS;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_public_key_from_raw(
- void * p_public_key,
- uint8_t const * p_raw_data)
- {
- nrf_crypto_backend_micro_ecc_common_key_t * p_pub =
- (nrf_crypto_backend_micro_ecc_common_key_t *)p_public_key;
- nrf_crypto_ecc_curve_info_t const * p_info = p_pub->header.p_info;
- #if ECC_BACKEND_SWAP_BYTES
- nrf_crypto_internal_double_swap_endian((uint8_t *)(&p_pub->key[0]),
- p_raw_data,
- p_info->raw_private_key_size);
- #else
- memcpy(&p_pub->key[0], p_raw_data, p_info->raw_public_key_size);
- #endif
- return NRF_SUCCESS;
- }
- ret_code_t nrf_crypto_backend_micro_ecc_public_key_to_raw(
- void const * p_public_key,
- uint8_t * p_raw_data)
- {
- 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_pub->header.p_info;
- #if ECC_BACKEND_SWAP_BYTES
- nrf_crypto_internal_double_swap_endian(p_raw_data,
- (uint8_t *)(&p_pub->key[0]),
- p_info->raw_private_key_size);
- #else
- memcpy(p_raw_data, &p_pub->key[0], p_info->raw_public_key_size);
- #endif
- return NRF_SUCCESS;
- }
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC_ECC_SECP192R1)
- // Make sure that common key structure match secp192r1 (NIST 192-bit) key structure to safely cast types.
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp192r1_private_key_t, key),
- "Common uECC private key structure does not match secp192r1 (NIST 192-bit) one.");
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp192r1_public_key_t, key),
- "Common ECC public key structure does not match secp192r1 (NIST 192-bit) one.");
- const nrf_crypto_ecc_curve_info_t g_nrf_crypto_ecc_secp192r1_curve_info =
- {
- .public_key_size = sizeof(nrf_crypto_backend_secp192r1_public_key_t),
- .private_key_size = sizeof(nrf_crypto_backend_secp192r1_private_key_t),
- .curve_type = NRF_CRYPTO_ECC_SECP192R1_CURVE_TYPE,
- .raw_private_key_size = NRF_CRYPTO_ECC_SECP192R1_RAW_PRIVATE_KEY_SIZE,
- .raw_public_key_size = NRF_CRYPTO_ECC_SECP192R1_RAW_PUBLIC_KEY_SIZE,
- //lint -save -e611 -e546 (Suspicious cast, Suspicious use of &)
- .p_backend_data = (void *)&uECC_secp192r1,
- //lint -restore
- };
- #endif
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC_ECC_SECP224R1)
- // Make sure that common key structure match secp224r1 (NIST 224-bit) key structure to safely cast types.
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp224r1_private_key_t, key),
- "Common uECC private key structure does not match secp224r1 (NIST 224-bit) one.");
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp224r1_public_key_t, key),
- "Common ECC public key structure does not match secp224r1 (NIST 224-bit) one.");
- const nrf_crypto_ecc_curve_info_t g_nrf_crypto_ecc_secp224r1_curve_info =
- {
- .public_key_size = sizeof(nrf_crypto_backend_secp224r1_public_key_t),
- .private_key_size = sizeof(nrf_crypto_backend_secp224r1_private_key_t),
- .curve_type = NRF_CRYPTO_ECC_SECP224R1_CURVE_TYPE,
- .raw_private_key_size = NRF_CRYPTO_ECC_SECP224R1_RAW_PRIVATE_KEY_SIZE,
- .raw_public_key_size = NRF_CRYPTO_ECC_SECP224R1_RAW_PUBLIC_KEY_SIZE,
- //lint -save -e611 -e546 (Suspicious cast, Suspicious use of &)
- .p_backend_data = (void *)&uECC_secp224r1,
- //lint -restore
- };
- #endif
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC_ECC_SECP256R1)
- // Make sure that common key structure match secp256r1 (NIST 256-bit) key structure to safely cast types.
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp256r1_private_key_t, key),
- "Common uECC private key structure does not match secp256r1 (NIST 256-bit) one.");
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp256r1_public_key_t, key),
- "Common ECC public key structure does not match secp256r1 (NIST 256-bit) one.");
- const nrf_crypto_ecc_curve_info_t g_nrf_crypto_ecc_secp256r1_curve_info =
- {
- .public_key_size = sizeof(nrf_crypto_backend_secp256r1_public_key_t),
- .private_key_size = sizeof(nrf_crypto_backend_secp256r1_private_key_t),
- .curve_type = NRF_CRYPTO_ECC_SECP256R1_CURVE_TYPE,
- .raw_private_key_size = NRF_CRYPTO_ECC_SECP256R1_RAW_PRIVATE_KEY_SIZE,
- .raw_public_key_size = NRF_CRYPTO_ECC_SECP256R1_RAW_PUBLIC_KEY_SIZE,
- //lint -save -e611 -e546 (Suspicious cast, Suspicious use of &)
- .p_backend_data = (void *)&uECC_secp256r1,
- //lint -restore
- };
- #endif
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC_ECC_SECP256K1)
- // Make sure that common key structure match secp256k1 (Koblitz 256-bit) key structure to safely cast types.
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp256k1_private_key_t, key),
- "Common uECC private key structure does not match secp256k1 (Koblitz 256-bit) one.");
- STATIC_ASSERT(offsetof(nrf_crypto_backend_micro_ecc_common_key_t, key) ==
- offsetof(nrf_crypto_backend_secp256k1_public_key_t, key),
- "Common ECC public key structure does not match secp256k1 (Koblitz 256-bit) one.");
- const nrf_crypto_ecc_curve_info_t g_nrf_crypto_ecc_secp256k1_curve_info =
- {
- .public_key_size = sizeof(nrf_crypto_backend_secp256k1_public_key_t),
- .private_key_size = sizeof(nrf_crypto_backend_secp256k1_private_key_t),
- .curve_type = NRF_CRYPTO_ECC_SECP256K1_CURVE_TYPE,
- .raw_private_key_size = NRF_CRYPTO_ECC_SECP256K1_RAW_PRIVATE_KEY_SIZE,
- .raw_public_key_size = NRF_CRYPTO_ECC_SECP256K1_RAW_PUBLIC_KEY_SIZE,
- //lint -save -e611 -e546 (Suspicious cast, Suspicious use of &)
- .p_backend_data = (void *)&uECC_secp256k1,
- //lint -restore
- };
- #endif
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MICRO_ECC)
|