diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_ecdsa.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_ecdsa.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_ecdsa.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_ecdsa.c new file mode 100644 index 0000000..5bbfc18 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_ecdsa.c @@ -0,0 +1,166 @@ +/** + * Copyright (c) 2018 - 2018, 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_OBERON) + +#include <stdint.h> +#include <stdbool.h> +#include <string.h> + +#include "nrf_crypto_ecc.h" +#include "nrf_crypto_rng.h" +#include "nrf_crypto_ecdsa.h" + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_SECP256R1) + +#include "occ_ecdsa_p256.h" + + +#define OBERON_HASH_SIZE_FOR_SECP256R1 (256 / 8) + + +ret_code_t nrf_crypto_backend_secp256r1_sign( + void * p_context, + void const * p_private_key, + uint8_t const * p_data, + size_t data_size, + uint8_t * p_signature) +{ + int result; + uint8_t session_key[32]; + + nrf_crypto_backend_secp256r1_private_key_t const * p_prv = + (nrf_crypto_backend_secp256r1_private_key_t const *)p_private_key; + + if (data_size < OBERON_HASH_SIZE_FOR_SECP256R1) + { + return NRF_ERROR_CRYPTO_INPUT_LENGTH; + } + + result = nrf_crypto_backend_oberon_ecc_secp256r1_rng(session_key); + if (result != NRF_SUCCESS) + { + return result; + } + + result = occ_ecdsa_p256_sign_hash(p_signature, p_data, p_prv->key, session_key); + + return result == 0 ? NRF_SUCCESS : NRF_ERROR_CRYPTO_INTERNAL; +} + + +ret_code_t nrf_crypto_backend_secp256r1_verify( + void * p_context, + void const * p_public_key, + uint8_t const * p_data, + size_t data_size, + uint8_t const * p_signature) +{ + int result; + + nrf_crypto_backend_secp256r1_public_key_t const * p_pub = + (nrf_crypto_backend_secp256r1_public_key_t const *)p_public_key; + + if (data_size < OBERON_HASH_SIZE_FOR_SECP256R1) + { + return NRF_ERROR_CRYPTO_INPUT_LENGTH; + } + + result = occ_ecdsa_p256_verify_hash(p_signature, p_data, p_pub->key); + + if (result != 0) + { + return NRF_ERROR_CRYPTO_ECDSA_INVALID_SIGNATURE; + } + return NRF_SUCCESS; +} + + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_SECP256R1) + + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_ED25519) + +#include "occ_ed25519.h" + + +ret_code_t nrf_crypto_backend_ed25519_sign( + void * p_context, + void const * p_private_key, + uint8_t const * p_data, + size_t data_size, + uint8_t * p_signature) +{ + nrf_crypto_backend_ed25519_private_key_t const * p_prv = + (nrf_crypto_backend_ed25519_private_key_t const *)p_private_key; + + occ_ed25519_sign(p_signature, p_data, data_size, p_prv->private_part, p_prv->public_part); + + return NRF_SUCCESS; +} + +ret_code_t nrf_crypto_backend_ed25519_verify( + void * p_context, + void const * p_public_key, + uint8_t const * p_data, + size_t data_size, + uint8_t const * p_signature) +{ + int result; + + nrf_crypto_backend_ed25519_public_key_t const * p_pub = + (nrf_crypto_backend_ed25519_public_key_t const *)p_public_key; + + result = occ_ed25519_verify(p_signature, p_data, data_size, p_pub->key); + + if (result != 0) + { + return NRF_ERROR_CRYPTO_ECDSA_INVALID_SIGNATURE; + } + return NRF_SUCCESS; +} + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_ED25519) + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON) + |