mirror of https://github.com/ARMmbed/mbed-os.git
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/**
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* \file gcm_alt.h.h
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*
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* \brief This file contains GCM definitions and functions.
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*
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* The Galois/Counter Mode (GCM) for 128-bit block ciphers is defined
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* in <em>D. McGrew, J. Viega, The Galois/Counter Mode of Operation
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* (GCM), Natl. Inst. Stand. Technol.</em>
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*
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* For more information on GCM, see <em>NIST SP 800-38D: Recommendation for
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* Block Cipher Modes of Operation: Galois/Counter Mode (GCM) and GMAC</em>.
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*
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*/
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/*
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* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
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* Copyright (C) 2019-2020 STMicroelectronics, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file implements ST GCM HW services based on API from mbed TLS
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*/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef MBEDTLS_GCM_ALT_H
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#define MBEDTLS_GCM_ALT_H
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#if defined(MBEDTLS_GCM_ALT)
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/* Includes ------------------------------------------------------------------*/
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#include "cryp_stm32.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Exported types ------------------------------------------------------------*/
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/**
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* \brief AES context structure
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*
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*/
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typedef struct mbedtls_gcm_context {
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/* Encryption/Decryption key */
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uint32_t gcm_key[8];
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CRYP_HandleTypeDef hcryp_gcm; /* HW driver handle */
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uint32_t ctx_save_cr; /* save context for multi-context */
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uint64_t len; /* total length of the encrypted data. */
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int mode; /* The operation to perform:
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#MBEDTLS_GCM_ENCRYPT or
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#MBEDTLS_GCM_DECRYPT. */
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}
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mbedtls_gcm_context;
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/* Exported constants --------------------------------------------------------*/
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/* Uncomment if ADD (Additional Authentication Data) may have not a length */
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/* over a multiple of 32 bits (Hw implementation dependance) */
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//#define STM32_AAD_ANY_LENGTH_SUPPORT
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/* Exported macro ------------------------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* MBEDTLS_GCM_ALT */
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#endif /* MBEDTLS_GCM_ALT_H */
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