/** * Copyright (c) 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. * */ #ifndef NRF_CRYPTO_AEAD_SHARED_H__ #define NRF_CRYPTO_AEAD_SHARED_H__ /** @file * * @defgroup nrf_crypto_aead_shared AEAD related functions * @{ * @ingroup nrf_crypto * * @brief Provides AEAD related functionality through nrf_crypto. */ #include #include "nrf_crypto_types.h" #ifdef __cplusplus extern "C" { #endif /**@internal @brief Magic value to signal that the nrf_crypto_hash context structure is initialized. */ #define NRF_CRYPTO_AEAD_INIT_MAGIC_VALUE (0x44414541) // ASCII "AEAD" #define NRF_CRYPTO_AES_CCM_STAR_MAC_BITMASK (0x1C) /* [0, 4, 8, 16] allowed MAC size in CCM mode */ #define NRF_CRYPTO_AES_CCM_MAC_MIN (4u) /* MAC min value in CCM mode */ #define NRF_CRYPTO_AES_CCM_MAC_MAX (16u) /* MAC max value in CCM mode */ #define NRF_CRYPTO_AES_GCM_MAC_MIN (4u) /* MAC min value in GCM mode */ #define NRF_CRYPTO_AES_GCM_MAC_MAX (16u) /* MAC max value in GCM mode */ #define NRF_CRYPTO_AES_CCM_NONCE_SIZE_MIN (7u) /* [7...13] allowed nonce size in CCM mode */ #define NRF_CRYPTO_AES_CCM_NONCE_SIZE_MAX (13u) /* [7...13] allowed nonce size in CCM mode */ #define NRF_CRYPTO_AES_CCM_STAR_NONCE_SIZE (13u) /* [13] allowed nonce size in CCM* mode */ #define NRF_CRYPTO_CHACHA_POLY_NONCE_SIZE (12u) /* [12] allowed nonce size in chacha-poly mode */ #define NRF_CRYPTO_CHACHA_POLY_MAC_SIZE (16u) /* [16] allowed MAC size in chacha-poly mode */ /**@internal @brief Enumeration of supported modes of operation in nrf_crypto_aead. */ typedef enum { NRF_CRYPTO_AEAD_MODE_AES_CCM, // supported by: MBEDTLS & CC310 NRF_CRYPTO_AEAD_MODE_AES_CCM_STAR, // supported by: CC310 NRF_CRYPTO_AEAD_MODE_AES_EAX, // supported by: CIFRA NRF_CRYPTO_AEAD_MODE_AES_GCM, // supported by: MBEDTLS NRF_CRYPTO_AEAD_MODE_CHACHA_POLY // supported by: CC310 & OBERON } nrf_crypto_aead_mode_t; /**@internal @brief Type declaration to perform AEAD initialization in the nrf_crypto backend. * * This is internal API. See @ref nrf_crypto_aead_init for documentation. */ typedef ret_code_t (*aead_init_fn_t)(void * const p_context, uint8_t * p_key); /**@internal @brief Type declaration to perform AEAD uninitialization in the nrf_crypto backend. * * This is internal API. See @ref nrf_crypto_aead_uninit for documentation. */ typedef ret_code_t (*aead_uninit_fn_t)(void * const p_context); /**@internal @brief Type declaration to perform AEAD encryption in nrf_crypto backend. * * This is internal API. See @ref nrf_crypto_aead_crypt for documentation. */ typedef ret_code_t (*aead_crypt_fn_t)(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); /**@internal @brief Type declaration for the nrf_crypto_aead info structure. * * @details This structure contains the calling interface and any metadata required * to call the nrf_crypto_aead API functions. */ typedef struct { nrf_crypto_aead_mode_t const mode; nrf_crypto_key_size_id_t const key_size; aead_init_fn_t const init_fn; aead_uninit_fn_t const uninit_fn; aead_crypt_fn_t const crypt_fn; } nrf_crypto_aead_info_t; /**@internal @brief Type declaration of internal representation of an AEAD context structure. * * @details This is an internal type that should not be used directly. */ typedef struct { uint32_t init_value; nrf_crypto_aead_info_t const * p_info; } nrf_crypto_aead_internal_context_t; /** @} */ #ifdef __cplusplus } #endif #endif // #ifndef NRF_CRYPTO_AEAD_SHARED_H__