/* * mbed Microcontroller Library * Copyright (c) 2019 Cypress Semiconductor Corporation * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * \file crypto_common.c * \version 1.0 * * \brief Source file for common mbedtls acceleration functions * */ #include <string.h> #include "crypto_common.h" #include "cy_crypto_common.h" #include "cy_crypto_core_hw.h" #include "cy_crypto_core_mem.h" #define CY_CRYPTO_CHECK_PARAM(cond) do { \ if( !(cond) ) \ return; \ } while( 0 ) /******************************************************************************* * Crypto object manage functions *******************************************************************************/ bool cy_hw_crypto_reserve(cy_hw_crypto_t *obj, cyhal_crypto_feature_t feature) { cy_rslt_t status; CY_ASSERT( obj != NULL ); status = cyhal_crypto_reserve(&(obj->base), &(obj->resource), feature); if (CY_RSLT_SUCCESS == status) { obj->feature = feature; } return (CY_RSLT_SUCCESS == status); } void cy_hw_crypto_release(cy_hw_crypto_t *obj) { CY_ASSERT( obj != NULL ); if (obj->resource.type == CYHAL_RSC_CRYPTO) { cyhal_crypto_free(obj->base, &(obj->resource), obj->feature); } } void cy_hw_zeroize(void *data, uint32_t dataSize) { cy_hw_crypto_t obj; CY_CRYPTO_CHECK_PARAM( data != NULL ); CY_CRYPTO_CHECK_PARAM( dataSize > 0u ); if (cy_hw_crypto_reserve(&obj, CYHAL_CRYPTO_COMMON)) { Cy_Crypto_Core_MemSet(obj.base, data, 0u, (uint16_t)dataSize); } cy_hw_crypto_release(&obj); } void cy_hw_sha_init(void *ctx, uint32_t ctxSize) { CY_CRYPTO_CHECK_PARAM( ctx != NULL ); CY_CRYPTO_CHECK_PARAM( ctxSize > 0u ); cy_hw_zeroize(ctx, ctxSize); (void)cy_hw_crypto_reserve((cy_hw_crypto_t *)ctx, CYHAL_CRYPTO_COMMON); } void cy_hw_sha_free(void *ctx, uint32_t ctxSize) { CY_CRYPTO_CHECK_PARAM( ctx != NULL ); CY_CRYPTO_CHECK_PARAM( ctxSize > 0u); cy_hw_crypto_release((cy_hw_crypto_t *)ctx); cy_hw_zeroize(ctx, ctxSize); } int cy_hw_sha_start(cy_hw_crypto_t *obj, cy_stc_crypto_sha_state_t *hashState, cy_en_crypto_sha_mode_t shaMode, void *shaBuffers) { cy_en_crypto_status_t status; if ((hashState == NULL) || (shaBuffers == NULL)) return (-1); status = Cy_Crypto_Core_Sha_Init(obj->base, hashState, shaMode, shaBuffers); if (CY_CRYPTO_SUCCESS != status) return (-1); status = Cy_Crypto_Core_Sha_Start(obj->base, hashState); if (CY_CRYPTO_SUCCESS != status) return (-1); return (0); } int cy_hw_sha_update(cy_hw_crypto_t *obj, cy_stc_crypto_sha_state_t *hashState, const uint8_t *in, uint32_t inlen) { cy_en_crypto_status_t status; if ((hashState == NULL) || (in == NULL)) return (-1); if (hashState->blockSize == 0) return (-1); status = Cy_Crypto_Core_Sha_Update(obj->base, hashState, in, inlen); if (CY_CRYPTO_SUCCESS != status) return (-1); return (0); } int cy_hw_sha_finish(cy_hw_crypto_t *obj, cy_stc_crypto_sha_state_t *hashState, uint8_t *output) { cy_en_crypto_status_t status; if ((hashState == NULL) || (output == NULL)) return (-1); if (hashState->blockSize == 0) return (-1); status = Cy_Crypto_Core_Sha_Finish(obj->base, hashState, output); if (CY_CRYPTO_SUCCESS != status) return (-1); return (0); } int cy_hw_sha_process(cy_hw_crypto_t *obj, cy_stc_crypto_sha_state_t *hashState, const uint8_t *in) { cy_en_crypto_status_t status; status = Cy_Crypto_Core_Sha_Update(obj->base, hashState, in, hashState->blockSize); if (CY_CRYPTO_SUCCESS != status) return (-1); return (0); } void cy_hw_sha_clone( void *ctxDst, const void *ctxSrc, uint32_t ctxSize, cy_stc_crypto_sha_state_t *hashStateDst, void *shaBuffersDst) { CY_CRYPTO_CHECK_PARAM( ctxDst != NULL ); CY_CRYPTO_CHECK_PARAM( ctxSrc != NULL ); CY_CRYPTO_CHECK_PARAM( hashStateDst != NULL ); CY_CRYPTO_CHECK_PARAM( shaBuffersDst != NULL ); Cy_Crypto_Core_MemCpy(((cy_hw_crypto_t *)ctxSrc)->base, ctxDst, ctxSrc, (uint16_t)ctxSize); Cy_Crypto_Core_Sha_Init(((cy_hw_crypto_t *)ctxSrc)->base, hashStateDst, (cy_en_crypto_sha_mode_t)hashStateDst->mode, shaBuffersDst); }