558 lines
19 KiB
C
558 lines
19 KiB
C
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/*
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* The Clear BSD License
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* Copyright 2017 NXP
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* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted (subject to the limitations in the disclaimer below) provided
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* that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_DCP_H_
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#define _FSL_DCP_H_
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#include "fsl_common.h"
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/*! @brief DCP status return codes. */
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enum _dcp_status
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{
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kStatus_DCP_Again = MAKE_STATUS(kStatusGroup_DCP, 0), /*!< Non-blocking function shall be called again. */
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};
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/*******************************************************************************
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* Definitions
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*******************************************************************************/
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/*!
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* @addtogroup dcp_driver
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* @{
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*/
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/*! @name Driver version */
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/*@{*/
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/*! @brief DCP driver version. Version 2.0.0.
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*
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* Current version: 2.0.0
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*
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* Change log:
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* - Version 2.0.0
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* - Initial version
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*/
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#define FSL_DCP_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
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/*@}*/
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/*! @brief DCP channel enable.
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*
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*/
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typedef enum _dcp_ch_enable
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{
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kDCP_chDisable = 0U, /*!< DCP channel disable */
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kDCP_ch0Enable = 1U, /*!< DCP channel 0 enable */
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kDCP_ch1Enable = 2U, /*!< DCP channel 1 enable */
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kDCP_ch2Enable = 4U, /*!< DCP channel 2 enable */
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kDCP_ch3Enable = 8U, /*!< DCP channel 3 enable */
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kDCP_chEnableAll = 15U, /*!< DCP channel enable all */
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} _dcp_ch_enable_t;
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/*! @brief DCP interrupt enable.
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*
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*/
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typedef enum _dcp_ch_int_enable
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{
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kDCP_chIntDisable = 0U, /*!< DCP interrupts disable */
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kDCP_ch0IntEnable = 1U, /*!< DCP channel 0 interrupt enable */
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kDCP_ch1IntEnable = 2U, /*!< DCP channel 1 interrupt enable */
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kDCP_ch2IntEnable = 4U, /*!< DCP channel 2 interrupt enable */
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kDCP_ch3IntEnable = 8U, /*!< DCP channel 3 interrupt enable */
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} _dcp_ch_int_enable_t;
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/*! @brief DCP channel selection.
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*
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*/
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typedef enum _dcp_channel
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{
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kDCP_Channel0 = (1u << 16), /*!< DCP channel 0. */
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kDCP_Channel1 = (1u << 17), /*!< DCP channel 1. */
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kDCP_Channel2 = (1u << 18), /*!< DCP channel 2. */
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kDCP_Channel3 = (1u << 19), /*!< DCP channel 3. */
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} dcp_channel_t;
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/*! @brief DCP key slot selection.
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*
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*/
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typedef enum _dcp_key_slot
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{
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kDCP_KeySlot0 = 0U, /*!< DCP key slot 0. */
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kDCP_KeySlot1 = 1U, /*!< DCP key slot 1. */
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kDCP_KeySlot2 = 2U, /*!< DCP key slot 2.*/
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kDCP_KeySlot3 = 3U, /*!< DCP key slot 3. */
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kDCP_OtpKey = 4U, /*!< DCP OTP key. */
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kDCP_OtpUniqueKey = 5U, /*!< DCP unique OTP key. */
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kDCP_PayloadKey = 6U, /*!< DCP payload key. */
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} dcp_key_slot_t;
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/*! @brief DCP's work packet. */
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typedef struct _dcp_work_packet
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{
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uint32_t nextCmdAddress;
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uint32_t control0;
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uint32_t control1;
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uint32_t sourceBufferAddress;
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uint32_t destinationBufferAddress;
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uint32_t bufferSize;
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uint32_t payloadPointer;
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uint32_t status;
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} dcp_work_packet_t;
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/*! @brief Specify DCP's key resource and DCP channel. */
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typedef struct _dcp_handle
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{
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dcp_channel_t channel; /*!< Specify DCP channel. */
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dcp_key_slot_t keySlot; /*!< For operations with key (such as AES encryption/decryption), specify DCP key slot. */
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uint32_t keyWord[4];
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uint32_t iv[4];
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} dcp_handle_t;
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/*! @brief DCP's context buffer, used by DCP for context switching between channels. */
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typedef struct _dcp_context
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{
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uint32_t x[208 / sizeof(uint32_t)];
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} dcp_context_t;
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/*! @brief DCP's configuration structure. */
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typedef struct _dcp_config
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{
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bool gatherResidualWrites; /*!< Enable the ragged writes to the unaligned buffers. */
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bool enableContextCaching; /*!< Enable the caching of contexts between the operations. */
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bool enableContextSwitching; /*!< Enable automatic context switching for the channels. */
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uint8_t enableChannel; /*!< DCP channel enable. */
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uint8_t enableChannelInterrupt; /*!< Per-channel interrupt enable. */
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} dcp_config_t;
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/*! @} */
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/*******************************************************************************
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* AES Definitions
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*******************************************************************************/
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/*!
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* @addtogroup dcp_driver_aes
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* @{
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*/
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/*! AES block size in bytes */
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#define DCP_AES_BLOCK_SIZE 16
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/*!
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*@}
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*/ /* end of dcp_driver_aes */
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/*******************************************************************************
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* HASH Definitions
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******************************************************************************/
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/*!
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* @addtogroup dcp_driver_hash
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* @{
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*/
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/* DCP cannot correctly compute hash for message with zero size. When enabled, driver bypases DCP and returns correct
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* hash value. If you are sure, that the driver will never be called with zero sized message, you can disable this
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* feature to reduce code size */
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#define DCP_HASH_CAVP_COMPATIBLE
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/*! @brief Supported cryptographic block cipher functions for HASH creation */
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typedef enum _dcp_hash_algo_t
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{
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kDCP_Sha1, /*!< SHA_1 */
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kDCP_Sha256, /*!< SHA_256 */
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kDCP_Crc32, /*!< CRC_32 */
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} dcp_hash_algo_t;
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/*! @brief DCP HASH Context size. */
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#define DCP_SHA_BLOCK_SIZE 128 /*!< internal buffer block size */
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#define DCP_HASH_BLOCK_SIZE DCP_SHA_BLOCK_SIZE /*!< DCP hash block size */
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/*! @brief DCP HASH Context size. */
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#define DCP_HASH_CTX_SIZE 58
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/*! @brief Storage type used to save hash context. */
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typedef struct _dcp_hash_ctx_t
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{
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uint32_t x[DCP_HASH_CTX_SIZE];
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} dcp_hash_ctx_t;
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/*!
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*@}
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*/ /* end of dcp_driver_hash */
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/*******************************************************************************
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* API
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @addtogroup dcp_driver
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* @{
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*/
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/*!
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* @brief Enables clock to and enables DCP
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*
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* Enable DCP clock and configure DCP.
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*
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* @param base DCP base address
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* @param config Pointer to configuration structure.
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*/
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void DCP_Init(DCP_Type *base, const dcp_config_t *config);
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/*!
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* @brief Disable DCP clock
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*
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* Reset DCP and Disable DCP clock.
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*
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* @param base DCP base address
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*/
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void DCP_Deinit(DCP_Type *base);
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/*!
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* @brief Gets the default configuration structure.
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*
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* This function initializes the DCP configuration structure to a default value. The default
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* values are as follows.
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* dcpConfig->gatherResidualWrites = true;
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* dcpConfig->enableContextCaching = true;
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* dcpConfig->enableContextSwitching = true;
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* dcpConfig->enableChannnel = kDCP_chEnableAll;
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* dcpConfig->enableChannelInterrupt = kDCP_chIntDisable;
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*
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* @param[out] config Pointer to configuration structure.
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*/
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void DCP_GetDefaultConfig(dcp_config_t *config);
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/*!
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* @brief Poll and wait on DCP channel.
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*
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* Polls the specified DCP channel until current it completes activity.
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*
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* @param base DCP peripheral base address.
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* @param handle Specifies DCP channel.
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* @return kStatus_Success When data processing completes without error.
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* @return kStatus_Fail When error occurs.
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*/
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status_t DCP_WaitForChannelComplete(DCP_Type *base, dcp_handle_t *handle);
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/*!
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*@}
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*/ /* end of dcp_driver */
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/*******************************************************************************
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* AES API
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******************************************************************************/
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/*!
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* @addtogroup dcp_driver_aes
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* @{
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*/
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/*!
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* @brief Set AES key to dcp_handle_t struct and optionally to DCP.
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*
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* Sets the AES key for encryption/decryption with the dcp_handle_t structure.
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* The dcp_handle_t input argument specifies keySlot.
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* If the keySlot is kDCP_OtpKey, the function will check the OTP_KEY_READY bit and will return it's ready to use
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* status.
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* For other keySlot selections, the function will copy and hold the key in dcp_handle_t struct.
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* If the keySlot is one of the four DCP SRAM-based keys (one of kDCP_KeySlot0, kDCP_KeySlot1, kDCP_KeySlot2,
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* kDCP_KeySlot3),
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* this function will also load the supplied key to the specified keySlot in DCP.
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*
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* @param base DCP peripheral base address.
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* @param handle Handle used for the request.
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* @param key 0-mod-4 aligned pointer to AES key.
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* @param keySize AES key size in bytes. Shall equal 16.
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* @return status from set key operation
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*/
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status_t DCP_AES_SetKey(DCP_Type *base, dcp_handle_t *handle, const uint8_t *key, size_t keySize);
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/*!
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* @brief Encrypts AES on one or multiple 128-bit block(s).
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*
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* Encrypts AES.
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* The source plaintext and destination ciphertext can overlap in system memory.
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*
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* @param base DCP peripheral base address
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* @param handle Handle used for this request.
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* @param plaintext Input plain text to encrypt
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* @param[out] ciphertext Output cipher text
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* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
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* @return Status from encrypt operation
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*/
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status_t DCP_AES_EncryptEcb(
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DCP_Type *base, dcp_handle_t *handle, const uint8_t *plaintext, uint8_t *ciphertext, size_t size);
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/*!
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* @brief Decrypts AES on one or multiple 128-bit block(s).
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*
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* Decrypts AES.
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* The source ciphertext and destination plaintext can overlap in system memory.
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*
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* @param base DCP peripheral base address
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* @param handle Handle used for this request.
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* @param ciphertext Input plain text to encrypt
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* @param[out] plaintext Output cipher text
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* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
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* @return Status from decrypt operation
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*/
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status_t DCP_AES_DecryptEcb(
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DCP_Type *base, dcp_handle_t *handle, const uint8_t *ciphertext, uint8_t *plaintext, size_t size);
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/*!
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* @brief Encrypts AES using CBC block mode.
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*
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* Encrypts AES using CBC block mode.
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* The source plaintext and destination ciphertext can overlap in system memory.
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*
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* @param base DCP peripheral base address
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* @param handle Handle used for this request.
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* @param plaintext Input plain text to encrypt
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* @param[out] ciphertext Output cipher text
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* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
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* @param iv Input initial vector to combine with the first input block.
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* @return Status from encrypt operation
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*/
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status_t DCP_AES_EncryptCbc(DCP_Type *base,
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dcp_handle_t *handle,
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const uint8_t *plaintext,
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uint8_t *ciphertext,
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size_t size,
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const uint8_t iv[16]);
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/*!
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* @brief Decrypts AES using CBC block mode.
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*
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* Decrypts AES using CBC block mode.
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* The source ciphertext and destination plaintext can overlap in system memory.
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*
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* @param base DCP peripheral base address
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* @param handle Handle used for this request.
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* @param ciphertext Input cipher text to decrypt
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* @param[out] plaintext Output plain text
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* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
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* @param iv Input initial vector to combine with the first input block.
|
||
|
|
* @return Status from decrypt operation
|
||
|
|
*/
|
||
|
|
status_t DCP_AES_DecryptCbc(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
const uint8_t *ciphertext,
|
||
|
|
uint8_t *plaintext,
|
||
|
|
size_t size,
|
||
|
|
const uint8_t iv[16]);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
*@}
|
||
|
|
*/ /* end of dcp_driver_aes */
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @addtogroup dcp_nonblocking_driver_aes
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/*!
|
||
|
|
* @brief Encrypts AES using the ECB block mode.
|
||
|
|
*
|
||
|
|
* Puts AES ECB encrypt work packet to DCP channel.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Handle used for this request.
|
||
|
|
* @param[out] dcpPacket Memory for the DCP work packet.
|
||
|
|
* @param plaintext Input plain text to encrypt.
|
||
|
|
* @param[out] ciphertext Output cipher text
|
||
|
|
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
|
||
|
|
* @return kStatus_Success The work packet has been scheduled at DCP channel.
|
||
|
|
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
|
||
|
|
*/
|
||
|
|
status_t DCP_AES_EncryptEcbNonBlocking(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
dcp_work_packet_t *dcpPacket,
|
||
|
|
const uint8_t *plaintext,
|
||
|
|
uint8_t *ciphertext,
|
||
|
|
size_t size);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Decrypts AES using ECB block mode.
|
||
|
|
*
|
||
|
|
* Puts AES ECB decrypt dcpPacket to DCP input job ring.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Handle used for this request.
|
||
|
|
* @param[out] dcpPacket Memory for the DCP work packet.
|
||
|
|
* @param ciphertext Input cipher text to decrypt
|
||
|
|
* @param[out] plaintext Output plain text
|
||
|
|
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
|
||
|
|
* @return kStatus_Success The work packet has been scheduled at DCP channel.
|
||
|
|
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
|
||
|
|
*/
|
||
|
|
status_t DCP_AES_DecryptEcbNonBlocking(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
dcp_work_packet_t *dcpPacket,
|
||
|
|
const uint8_t *ciphertext,
|
||
|
|
uint8_t *plaintext,
|
||
|
|
size_t size);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Encrypts AES using CBC block mode.
|
||
|
|
*
|
||
|
|
* Puts AES CBC encrypt dcpPacket to DCP input job ring.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Handle used for this request. Specifies jobRing.
|
||
|
|
* @param[out] dcpPacket Memory for the DCP work packet.
|
||
|
|
* @param plaintext Input plain text to encrypt
|
||
|
|
* @param[out] ciphertext Output cipher text
|
||
|
|
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
|
||
|
|
* @param iv Input initial vector to combine with the first input block.
|
||
|
|
* @return kStatus_Success The work packet has been scheduled at DCP channel.
|
||
|
|
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
|
||
|
|
*/
|
||
|
|
status_t DCP_AES_EncryptCbcNonBlocking(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
dcp_work_packet_t *dcpPacket,
|
||
|
|
const uint8_t *plaintext,
|
||
|
|
uint8_t *ciphertext,
|
||
|
|
size_t size,
|
||
|
|
const uint8_t *iv);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Decrypts AES using CBC block mode.
|
||
|
|
*
|
||
|
|
* Puts AES CBC decrypt dcpPacket to DCP input job ring.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Handle used for this request. Specifies jobRing.
|
||
|
|
* @param[out] dcpPacket Memory for the DCP work packet.
|
||
|
|
* @param ciphertext Input cipher text to decrypt
|
||
|
|
* @param[out] plaintext Output plain text
|
||
|
|
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
|
||
|
|
* @param iv Input initial vector to combine with the first input block.
|
||
|
|
* @return kStatus_Success The work packet has been scheduled at DCP channel.
|
||
|
|
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
|
||
|
|
*/
|
||
|
|
status_t DCP_AES_DecryptCbcNonBlocking(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
dcp_work_packet_t *dcpPacket,
|
||
|
|
const uint8_t *ciphertext,
|
||
|
|
uint8_t *plaintext,
|
||
|
|
size_t size,
|
||
|
|
const uint8_t *iv);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
*@}
|
||
|
|
*/ /* end of dcp_nonblocking_driver_aes */
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* HASH API
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @addtogroup dcp_driver_hash
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/*!
|
||
|
|
* @brief Initialize HASH context
|
||
|
|
*
|
||
|
|
* This function initializes the HASH.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Specifies the DCP channel used for hashing.
|
||
|
|
* @param[out] ctx Output hash context
|
||
|
|
* @param algo Underlaying algorithm to use for hash computation.
|
||
|
|
* @return Status of initialization
|
||
|
|
*/
|
||
|
|
status_t DCP_HASH_Init(DCP_Type *base, dcp_handle_t *handle, dcp_hash_ctx_t *ctx, dcp_hash_algo_t algo);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Add data to current HASH
|
||
|
|
*
|
||
|
|
* Add data to current HASH. This can be called repeatedly with an arbitrary amount of data to be
|
||
|
|
* hashed. The functions blocks. If it returns kStatus_Success, the running hash
|
||
|
|
* has been updated (DCP has processed the input data), so the memory at @ref input pointer
|
||
|
|
* can be released back to system. The DCP context buffer is updated with the running hash
|
||
|
|
* and with all necessary information to support possible context switch.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param[in,out] ctx HASH context
|
||
|
|
* @param input Input data
|
||
|
|
* @param inputSize Size of input data in bytes
|
||
|
|
* @return Status of the hash update operation
|
||
|
|
*/
|
||
|
|
status_t DCP_HASH_Update(DCP_Type *base, dcp_hash_ctx_t *ctx, const uint8_t *input, size_t inputSize);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Finalize hashing
|
||
|
|
*
|
||
|
|
* Outputs the final hash (computed by DCP_HASH_Update()) and erases the context.
|
||
|
|
*
|
||
|
|
* @param[in,out] ctx Input hash context
|
||
|
|
* @param[out] output Output hash data
|
||
|
|
* @param[in,out] outputSize Optional parameter (can be passed as NULL). On function entry, it specifies the size of
|
||
|
|
* output[] buffer. On function return, it stores the number of updated output bytes.
|
||
|
|
* @return Status of the hash finish operation
|
||
|
|
*/
|
||
|
|
status_t DCP_HASH_Finish(DCP_Type *base, dcp_hash_ctx_t *ctx, uint8_t *output, size_t *outputSize);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Create HASH on given data
|
||
|
|
*
|
||
|
|
* Perform the full SHA or CRC32 in one function call. The function is blocking.
|
||
|
|
*
|
||
|
|
* @param base DCP peripheral base address
|
||
|
|
* @param handle Handle used for the request.
|
||
|
|
* @param algo Underlaying algorithm to use for hash computation.
|
||
|
|
* @param input Input data
|
||
|
|
* @param inputSize Size of input data in bytes
|
||
|
|
* @param[out] output Output hash data
|
||
|
|
* @param[out] outputSize Output parameter storing the size of the output hash in bytes
|
||
|
|
* @return Status of the one call hash operation.
|
||
|
|
*/
|
||
|
|
status_t DCP_HASH(DCP_Type *base,
|
||
|
|
dcp_handle_t *handle,
|
||
|
|
dcp_hash_algo_t algo,
|
||
|
|
const uint8_t *input,
|
||
|
|
size_t inputSize,
|
||
|
|
uint8_t *output,
|
||
|
|
size_t *outputSize);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
*@}
|
||
|
|
*/ /* end of dcp_driver_hash */
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _FSL_DCP_H_ */
|