mirror of https://github.com/ARMmbed/mbed-os.git
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* Copyright (C) 2019 Cypress Semiconductor Corporation
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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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/**
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* \file aes_alt.h
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* \ version 1.0
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*
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* \brief This file contains AES definitions and functions.
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*
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* The Advanced Encryption Standard (AES) specifies a FIPS-approved
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* cryptographic algorithm that can be used to protect electronic
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* data.
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*
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* The AES algorithm is a symmetric block cipher that can
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* encrypt and decrypt information. For more information, see
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* <em>FIPS Publication 197: Advanced Encryption Standard</em> and
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* <em>ISO/IEC 18033-2:2006: Information technology -- Security
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* techniques -- Encryption algorithms -- Part 2: Asymmetric
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* ciphers</em>.
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*
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* The AES-XTS block mode is standardized by NIST SP 800-38E
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* <https://nvlpubs.nist.gov/nistpubs/legacy/sp/nistspecialpublication800-38e.pdf>
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* and described in detail by IEEE P1619
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* <https://ieeexplore.ieee.org/servlet/opac?punumber=4375278>.
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*/
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#ifndef AES_ALT_H
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#define AES_ALT_H
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#if defined(MBEDTLS_AES_ALT)
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// Regular implementation
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#define CY_CIPHER_MODE_CBC_ALT
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#include <cy_crypto_common.h>
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#include <cy_crypto_core_aes.h>
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#include "cy_syslib.h"
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#include "crypto_common.h"
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/**
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* \brief The AES context-type definition.
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*/
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typedef struct mbedtls_aes_context
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{
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cy_hw_crypto_t obj;
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cy_stc_crypto_aes_state_t aes_state;
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cy_stc_crypto_aes_buffers_t aes_buffers;
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}
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mbedtls_aes_context;
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#if defined(MBEDTLS_CIPHER_MODE_XTS)
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/**
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* \brief The AES XTS context-type definition.
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*/
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typedef struct mbedtls_aes_xts_context
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{
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mbedtls_aes_context crypt; /*!< The AES context to use for AES block
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encryption or decryption. */
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mbedtls_aes_context tweak; /*!< The AES context used for tweak
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computation. */
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} mbedtls_aes_xts_context;
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#endif /* MBEDTLS_CIPHER_MODE_XTS */
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#endif /* MBEDTLS_AES_ALT */
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#endif /* aes_alt.h */
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