SkyLi
132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/*
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* Copyright (c) 2015-2023, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __TI_MSP_CRYPTO_H__
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#define __TI_MSP_CRYPTO_H__
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#include <stdint.h>
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#include "sha256sw.h"
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/*********************************************************************
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* GLOBAL VARIABLES
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*/
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/*********************************************************************
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* MACROS
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*/
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/* ECC Window Size. Determines speed and workzone size of ECC operations.
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Recommended setting is 3. */
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/*
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* Measured workspace memory size with the corresponding measured measured workzone usage
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*
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* Window Size: 2 max Workzone 904 (0x388)
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* Window Size: 3 max Workzone size: 1012 (0x3F4)
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* Window Size: 4 max Workzone size: 1228 (0x4CC)
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* Window Size: 5 max Workzone size: 1660 (0x67C)
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*
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* Recommended to add some safety factor for buffer overflow
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* ex: window size 2, use size 960/3C0
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* */
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#define SECURE_FW_ECC_WINDOW_SIZE 2
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#define ECC_WORKZONE_SIZE 960
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/*! Invalid ECC Signature */
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#define SECURE_FW_ECC_STATUS_INVALID_SIGNATURE 0x5A
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/*! ECC Signature Successfully Verified */
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#define SECURE_FW_ECC_STATUS_VALID_SIGNATURE 0xA5
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#define ECDSA_KEY_LEN 32 //!< Length of the ECDSA security key
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#define ECDSA_SHA_TEMPWORKZONE_LEN \
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ECDSA_KEY_LEN * \
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6 //!< space for six buffers finalHash, reverseHash, pubkeyX, pubKeyY, sign1, sign2
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/* Offset value for number of bytes occupied by length field */
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#define SECURE_FW_ECC_KEY_OFFSET 4
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/* Offset of Key Length field */
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#define SECURE_FW_ECC_KEY_LEN_OFFSET 0
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/*!
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* ECC key length in bytes for NIST P-256 keys.
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*/
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#define SECURE_FW_ECC_NIST_P256_KEY_LEN_IN_BYTES 32
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/*!
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* ECC Workzone length in bytes for NIST P-256 key and shared secret generation.
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* For use with ECC Window Size 3 only. Used to store intermediary values in
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* ECC calculations. */
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#define BIM_ECC_NIST_P256_WORKZONE_LEN_IN_BYTES 1100
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#ifndef SECURE_FW_ECC_NIST_P256_WORKZONE_LEN_IN_BYTES
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#define SECURE_FW_ECC_NIST_P256_WORKZONE_LEN_IN_BYTES \
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(BIM_ECC_NIST_P256_WORKZONE_LEN_IN_BYTES)
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#endif
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/*! Length of Sign */
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#define SECURE_FW_SIGN_LEN 32
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/* Total buffer size */
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#define SECURE_FW_ECC_BUF_TOTAL_LEN(len) ((len) + SECURE_FW_ECC_KEY_OFFSET)
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/* Key size in uint32_t blocks */
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#define SECURE_FW_ECC_UINT32_BLK_LEN(len) (((len) + 3) / 4)
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/* Return Codes for the SHA256 */
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#define MSP_CRYPTO_SHA256_STATUS_SUCCESS SHA2SW_STATUS_SUCCESS
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#define MSP_CRYPTO_SHA256_STATUS_ERROR SHA2SW_STATUS_ERROR
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#define MSP_CRYPTO_SHA256_STATUS_UNSUPPORTED SHA2SW_STATUS_UNSUPPORTED
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#define MSP_CRYPTO_SHA256_STATUS_LENGTH_TOO_LARGE SHA2SW_STATUS_LENGTH_TOO_LARGE
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#define MSP_CRYPTO_SHA256_STATUS_NULL_INPUT SHA2SW_STATUS_NULL_INPUT
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void MSPCrypto_sha256_init(void);
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void MSPCrypto_sha256_drop(void);
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int MSPCrypto_sha256_update(const void *data, uint32_t data_len);
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int MSPCrypto_sha256_finish(uint8_t *output);
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void MSPCrypto_ecdsa_p256_init(void);
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void MSPCrypto_ecdsa_p256_drop(void);
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int MSPCrypto_ecdsa_p256_verify(
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const uint8_t *pk, const uint8_t *hash, const uint8_t *sig);
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#endif /* __MSP_CRYPTO_H__ */
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