diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.c new file mode 100644 index 0000000..14588d8 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.c @@ -0,0 +1,153 @@ +/** + * 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_common.h" +#if NRF_MODULE_ENABLED(NRF_CRYPTO) + +#include <stdbool.h> +#include "oberon_backend_chacha_poly_aead.h" + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_OBERON_CHACHA_POLY_AEAD) + +static ret_code_t backend_cc310_init(void * const p_context, uint8_t * p_key) +{ + nrf_crypto_backend_chacha_poly_context_t * p_ctx = + (nrf_crypto_backend_chacha_poly_context_t *)p_context; + + + if (p_ctx->header.p_info->key_size != NRF_CRYPTO_KEY_SIZE_256) + { + return NRF_ERROR_CRYPTO_KEY_SIZE; + } + + memcpy(p_ctx->key, p_key, sizeof(p_ctx->key)); + + return NRF_SUCCESS; +} + +static inline ret_code_t backend_cc310_uninit(void * const p_context) +{ + return NRF_SUCCESS; +} + +static ret_code_t backend_cc310_crypt(void * const p_context, + nrf_crypto_operation_t operation, + uint8_t * p_nonce, + uint8_t nonce_size, + uint8_t * p_adata, + size_t adata_size, + uint8_t * p_data_in, + size_t data_in_size, + uint8_t * p_data_out, + uint8_t * p_mac, + uint8_t mac_size) + +{ + int result; + + nrf_crypto_backend_chacha_poly_context_t * p_ctx = + (nrf_crypto_backend_chacha_poly_context_t *)p_context; + + if ((adata_size == 0) || (data_in_size == 0)) + { + return NRF_ERROR_CRYPTO_INPUT_LENGTH; + } + + if (mac_size != NRF_CRYPTO_CHACHA_POLY_MAC_SIZE) + { + return NRF_ERROR_CRYPTO_AEAD_MAC_SIZE; + } + + if (nonce_size != NRF_CRYPTO_CHACHA_POLY_NONCE_SIZE) + { + return NRF_ERROR_CRYPTO_AEAD_NONCE_SIZE; + } + + if (operation == NRF_CRYPTO_ENCRYPT) + { + occ_chacha20_poly1305_encrypt_aad(p_mac, + p_data_out, + p_data_in, + data_in_size, + p_adata, + adata_size, + p_nonce, + (size_t)nonce_size, + p_ctx->key); + } + else if (operation == NRF_CRYPTO_DECRYPT) + { + result = occ_chacha20_poly1305_decrypt_aad(p_mac, + p_data_out, + p_data_in, + data_in_size, + p_adata, + adata_size, + p_nonce, + (size_t)nonce_size, + p_ctx->key); + + if (result != 0) + { + return NRF_ERROR_CRYPTO_AEAD_INVALID_MAC; + } + } + else + { + return NRF_ERROR_CRYPTO_INVALID_PARAM; + } + + return NRF_SUCCESS; +} + +nrf_crypto_aead_info_t const g_nrf_crypto_chacha_poly_256_info = +{ + .key_size = NRF_CRYPTO_KEY_SIZE_256, + .mode = NRF_CRYPTO_AEAD_MODE_CHACHA_POLY, + + .init_fn = backend_cc310_init, + .uninit_fn = backend_cc310_uninit, + .crypt_fn = backend_cc310_crypt +}; + + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_CC310_CHACHA_POLY_AEAD) +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) + |