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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_HASH_H__ #define NRF_CRYPTO_HASH_H__ /** @file * * @defgroup nrf_crypto_hash Cryptographic hash related functions * @{ * @ingroup nrf_crypto * * @brief Provides cryptographic hash related functionality through nrf_crypto. */ #include #include "nrf_crypto_types.h" #include "nrf_crypto_hash_shared.h" #include "nrf_crypto_hash_backend.h" #include "app_util.h" #ifdef __cplusplus extern "C" { #endif /**@brief External variable declaration to info structure for SHA-256 * * @note The variable is defined in the nrf_crypto backend that is * enabled in the @ref sdk_config. * */ extern const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info; /**@brief External variable declaration to info structure for SHA-512 * * @note The variable is defined in the nrf_crypto backend that is * enabled in the @ref sdk_config. * */ extern const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha512_info; /** * @brief Context type for Hash. * * @note The size of this type is scaled for the largest Hash backend context that is * enabled in @ref sdk_config. */ typedef nrf_crypto_backend_hash_context_t nrf_crypto_hash_context_t; /** @brief Type definition for an array holding a SHA-256 hash digest. */ typedef uint8_t nrf_crypto_hash_sha256_digest_t[NRF_CRYPTO_HASH_SIZE_SHA256]; /** @brief Type definition for an array holding a SHA-512 hash digest. */ typedef uint8_t nrf_crypto_hash_sha512_digest_t[NRF_CRYPTO_HASH_SIZE_SHA512]; /**@brief Function for initializing the context structure required to compute a hash digest from * arbitrary input data. * * @note The context structure is assumed to be an opaque type defined by the * nrf_crypto backend. * * @note The return codes @ref NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE and * NRF_ERROR_CRYPTO_INTERNAL only happens in cc310 backend. * * @param[in,out] p_context Pointer to structure holding context information for * the hash calculation. * @param[in] p_info Pointer to structure holding info about the hash algorithm * used to do the computed hash. * * @retval NRF_SUCCESS The hash initialization was successful. * @retval NRF_ERROR_CRYPTO_NOT_INITIALIZED @ref nrf_crypto_init was not called prior to * this crypto function. * @retval NRF_ERROR_CRYPTO_CONTEXT_NULL A NULL pointer was provided for the context * structure. * @retval NRF_ERROR_CRYPTO_INPUT_NULL The pointer to the info structure was NULL. * @retval NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE The function was called with a hash mode that * is unavailable. * @retval NRF_ERROR_CRYPTO_INTERNAL An internal error occurred when initializing * the constext in the nrf_crypto backend. */ ret_code_t nrf_crypto_hash_init(nrf_crypto_hash_context_t * const p_context, nrf_crypto_hash_info_t const * p_info); /**@brief Function for updating the hash calculation with partial arbitrary data. * * @details This function should be called one or more times until all arbituary input data * required for the hash calcuation is provided. * * @note @ref nrf_crypto_hash_init must be called prior to this function to configure the * context structure used as input parameter to this function. * * @note @ref nrf_crypto_hash_finalize must be called after all arbitruary input data * has been provided to get the calculated hash digest. * * @note The context object is assumed to be an opaque type defined by the * nrf_crypto backend. * * @note The return values @ref NRF_ERROR_CRYPTO_BUSY, @ref NRF_ERROR_CRYPTO_INPUT_LOCATION * and @ref NRF_ERROR_CRYPTO_INPUT_LOCATION can only occur in CC310 backend. * * @param[in,out] p_context Pointer to structure holding context information for * the hash calculation. * @param[in] p_data Pointer to data to be hashed. * @param[in] data_size Length of the data to be hashed. * * @retval NRF_SUCCESS The hash digest was computed successfully. * @retval NRF_ERROR_CRYPTO_NOT_INITIALIZED @ref nrf_crypto_init was not called prior to * this crypto function. * @retval NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED The context was not initialized prior to * this call or it was corrupted. Please call * @ref nrf_crypto_hash_init to initialize it. * @retval NRF_ERROR_CRYPTO_CONTEXT_NULL A NULL pointer was provided for the context * structure. * @retval NRF_ERROR_CRYPTO_INPUT_NULL p_data was NULL. * @retval NRF_ERROR_CRYPTO_INPUT_LOCATION Input data not in RAM. * @retval NRF_ERROR_CRYPTO_BUSY The function could not be called because the * nrf_crypto backend was busy. Please rerun the * cryptographic routine at a later time. * @retval NRF_ERROR_CRYPTO_INTERNAL An internal error occurred in the nrf_crypto * backend. */ ret_code_t nrf_crypto_hash_update(nrf_crypto_hash_context_t * const p_context, uint8_t const * p_data, size_t data_size); /**@brief Function for finalizing computation of a hash digest from arbitrary data. * * @details This function is called to get the calculated * * @note @ref nrf_crypto_hash_init must be called prior to this function to configure the * context structure used as input parameter to this function. * * @note The input data for the calculated hash digest must be provided by calling * @ref nrf_crypto_hash_update one or more times. * * @note The context object is assumed to be an opaque type defined by the * nrf_crypto backend. * * @note The return values @ref NRF_ERROR_CRYPTO_BUSY and @ref NRF_ERROR_CRYPTO_INPUT_LOCATION * can only occur in CC310 backend. * * * @param[in] p_context Pointer to structure holding context information for * the hash calculation. * @param[out] p_digest Pointer to buffer holding the calculated hash digest. * @param[in,out] p_digest_size Pointer to a variable holding the length of the calculated hash. * Set this to the length of buffer that p_digest is pointing to. * * @retval NRF_SUCCESS The hash digest was computed successfully. * @retval NRF_ERROR_CRYPTO_NOT_INITIALIZED @ref nrf_crypto_init was not called prior to * this crypto function. * @retval NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED The context was not initialized prior to * this call or it was corrupted. Please call * @ref nrf_crypto_hash_init to initialize it. * @retval NRF_ERROR_CRYPTO_CONTEXT_NULL A NULL pointer was provided for the context * structure. * @retval NRF_ERROR_CRYPTO_OUTPUT_NULL p_digest or p_digest_size was NULL. * @retval NRF_ERROR_CRYPTO_OUTPUT_LENGTH The length of p_digest was too small for * the hash digest result. * @retval NRF_ERROR_CRYPTO_BUSY The function could not be called because the * nrf_crypto backend was busy. Please rerun the * cryptographic routine at a later time. * @retval NRF_ERROR_CRYPTO_INTERNAL An internal error occurred in the nrf_crypto * backend. */ ret_code_t nrf_crypto_hash_finalize(nrf_crypto_hash_context_t * const p_context, uint8_t * p_digest, size_t * const p_digest_size); /**@brief Function for computing a hash from arbitrary data in a single integrated step. * * @details This function calculates the hash digest from arbitruary data in a single integrated step. * This means calling init, update and finalize in one step. * * @note The context object is assumed to be an opaque type defined by the * nrf_crypto backend. * * @note The return values @ref NRF_ERROR_CRYPTO_BUSY, @ref NRF_ERROR_CRYPTO_INPUT_LOCATION * and @ref NRF_ERROR_CRYPTO_INPUT_LOCATION can only occur in CC310 backend. * * @param[in,out] p_context Pointer to structure holding context information for * the hash calculation. If this * is set to NULL, it will be allocated by the user configurable * allocate/free function @ref NRF_CRYPTO_ALLOC and * @ref NRF_CRYPTO_FREE. * @param[in] p_info Pointer to structure holding info about hash algorithm * for the computed hash. * @param[in] p_data Pointer to data to be hashed. * @param[in] data_size Length of the data to be hashed. * @param[out] p_digest Pointer to buffer holding the calculated hash digest. * @param[in,out] p_digest_size Pointer to a variable holding the length of the calculated hash. * Set this to the length of buffer that p_digest is pointing to. * * @retval NRF_SUCCESS The hash initialization was successful. * @retval NRF_ERROR_CRYPTO_NOT_INITIALIZED @ref nrf_crypto_init was not called prior to * this crypto function. * @retval NRF_ERROR_CRYPTO_CONTEXT_NULL A NULL pointer was provided for the context * structure. * @retval NRF_ERROR_CRYPTO_INPUT_NULL p_info or p_data was NULL. * @retval NRF_ERROR_CRYPTO_INPUT_LOCATION Input data not in RAM. * @retval NRF_ERROR_CRYPTO_OUTPUT_NULL p_digest or p_digest_size was NULL. * @retval NRF_ERROR_CRYPTO_OUTPUT_LENGTH The length of p_digest was too small for * the hash digest result. * @retval NRF_ERROR_CRYPTO_BUSY The function could not be called because the * nrf_crypto backend was busy. Please rerun the * cryptographic routine at a later time. * @retval NRF_ERROR_CRYPTO_ALLOC_FAILED Unable to allocate memory for the context. * @retval NRF_ERROR_CRYPTO_INTERNAL An internal error occurred in the nrf_crypto * backend. */ ret_code_t nrf_crypto_hash_calculate(nrf_crypto_hash_context_t * const p_context, nrf_crypto_hash_info_t const * p_info, uint8_t const * p_data, size_t data_size, uint8_t * p_digest, size_t * const p_digest_size); #ifdef __cplusplus } #endif /**@} */ #endif // NRF_CRYPTO_HASH_H__