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61
include/crypt/LICENSE
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61
include/crypt/LICENSE
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================================================================================
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TinyCrypt Cryptographic Library
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================================================================================
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Copyright (c) 2017, Intel Corporation. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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- Neither the name of the Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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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 OWNER 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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Copyright (c) 2014, Kenneth MacKay
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All rights reserved.
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https://github.com/kmackay/micro-ecc
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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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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61
include/crypt/constants.h
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61
include/crypt/constants.h
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/* constants.h - TinyCrypt interface to constants */
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/*
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* Copyright (C) 2017 by Intel Corporation, 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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* 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 Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* 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, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* @brief -- Interface to constants.
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*
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*/
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#ifndef __TC_CONSTANTS_H__
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#define __TC_CONSTANTS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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#define TC_CRYPTO_SUCCESS 1
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#define TC_CRYPTO_FAIL 0
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#define TC_ZERO_BYTE 0x00
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TC_CONSTANTS_H__ */
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129
include/crypt/sha256.h
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129
include/crypt/sha256.h
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/* sha256.h - TinyCrypt interface to a SHA-256 implementation */
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/*
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* Copyright (C) 2017 by Intel Corporation, 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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* 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 Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* 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, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* @brief Interface to a SHA-256 implementation.
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*
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* Overview: SHA-256 is a NIST approved cryptographic hashing algorithm
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* specified in FIPS 180. A hash algorithm maps data of arbitrary
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* size to data of fixed length.
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*
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* Security: SHA-256 provides 128 bits of security against collision attacks
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* and 256 bits of security against pre-image attacks. SHA-256 does
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* NOT behave like a random oracle, but it can be used as one if
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* the string being hashed is prefix-free encoded before hashing.
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*
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* Usage: 1) call tc_sha256_init to initialize a struct
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* tc_sha256_state_struct before hashing a new string.
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*
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* 2) call tc_sha256_update to hash the next string segment;
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* tc_sha256_update can be called as many times as needed to hash
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* all of the segments of a string; the order is important.
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*
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* 3) call tc_sha256_final to out put the digest from a hashing
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* operation.
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*/
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#ifndef __TC_SHA256_H__
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#define __TC_SHA256_H__
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TC_SHA256_BLOCK_SIZE (64)
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#define TC_SHA256_DIGEST_SIZE (32)
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#define TC_SHA256_STATE_BLOCKS (TC_SHA256_DIGEST_SIZE/4)
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struct tc_sha256_state_struct {
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unsigned int iv[TC_SHA256_STATE_BLOCKS];
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uint64_t bits_hashed;
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uint8_t leftover[TC_SHA256_BLOCK_SIZE];
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size_t leftover_offset;
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};
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typedef struct tc_sha256_state_struct *TCSha256State_t;
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/**
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* @brief SHA256 initialization procedure
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* Initializes s
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* @return returns TC_CRYPTO_SUCCESS (1)
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* returns TC_CRYPTO_FAIL (0) if s == NULL
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* @param s Sha256 state struct
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*/
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int tc_sha256_init(TCSha256State_t s);
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/**
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* @brief SHA256 update procedure
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* Hashes data_length bytes addressed by data into state s
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* @return returns TC_CRYPTO_SUCCESS (1)
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* returns TC_CRYPTO_FAIL (0) if:
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* s == NULL,
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* s->iv == NULL,
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* data == NULL
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* @note Assumes s has been initialized by tc_sha256_init
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* @warning The state buffer 'leftover' is left in memory after processing
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* If your application intends to have sensitive data in this
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* buffer, remind to erase it after the data has been processed
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* @param s Sha256 state struct
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* @param data message to hash
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* @param datalen length of message to hash
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*/
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int tc_sha256_update (TCSha256State_t s, const uint8_t *data, size_t datalen);
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/**
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* @brief SHA256 final procedure
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* Inserts the completed hash computation into digest
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* @return returns TC_CRYPTO_SUCCESS (1)
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* returns TC_CRYPTO_FAIL (0) if:
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* s == NULL,
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* s->iv == NULL,
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* digest == NULL
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* @note Assumes: s has been initialized by tc_sha256_init
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* digest points to at least TC_SHA256_DIGEST_SIZE bytes
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* @warning The state buffer 'leftover' is left in memory after processing
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* If your application intends to have sensitive data in this
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* buffer, remind to erase it after the data has been processed
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* @param digest unsigned eight bit integer
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* @param Sha256 state struct
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*/
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int tc_sha256_final(uint8_t *digest, TCSha256State_t s);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TC_SHA256_H__ */
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121
include/crypt/utils.h
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121
include/crypt/utils.h
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/* utils.h - TinyCrypt interface to platform-dependent run-time operations */
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/*
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* Copyright (C) 2017 by Intel Corporation, 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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* 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 Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* 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, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* @brief Interface to platform-dependent run-time operations.
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*
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*/
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#ifndef __TC_UTILS_H__
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#define __TC_UTILS_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Copy the the buffer 'from' to the buffer 'to'.
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* @return returns TC_CRYPTO_SUCCESS (1)
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* returns TC_CRYPTO_FAIL (0) if:
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* from_len > to_len.
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*
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* @param to OUT -- destination buffer
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* @param to_len IN -- length of destination buffer
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* @param from IN -- origin buffer
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* @param from_len IN -- length of origin buffer
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*/
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unsigned int _copy(uint8_t *to, unsigned int to_len,
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const uint8_t *from, unsigned int from_len);
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/**
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* @brief Set the value 'val' into the buffer 'to', 'len' times.
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*
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* @param to OUT -- destination buffer
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* @param val IN -- value to be set in 'to'
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* @param len IN -- number of times the value will be copied
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*/
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void _set(void *to, uint8_t val, unsigned int len);
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/**
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* @brief Set the value 'val' into the buffer 'to', 'len' times, in a way
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* which does not risk getting optimized out by the compiler
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* In cases where the compiler does not set __GNUC__ and where the
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* optimization level removes the memset, it may be necessary to
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* implement a _set_secure function and define the
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* TINYCRYPT_ARCH_HAS_SET_SECURE, which then can ensure that the
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* memset does not get optimized out.
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*
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* @param to OUT -- destination buffer
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* @param val IN -- value to be set in 'to'
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* @param len IN -- number of times the value will be copied
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*/
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#ifdef TINYCRYPT_ARCH_HAS_SET_SECURE
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extern void _set_secure(void *to, uint8_t val, unsigned int len);
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#else /* ! TINYCRYPT_ARCH_HAS_SET_SECURE */
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static inline void _set_secure(void *to, uint8_t val, unsigned int len)
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{
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(void) memset(to, val, len);
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#ifdef __GNUC__
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__asm__ __volatile__("" :: "g"(to) : "memory");
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#endif /* __GNUC__ */
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}
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#endif /* TINYCRYPT_ARCH_HAS_SET_SECURE */
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/*
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* @brief AES specific doubling function, which utilizes
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* the finite field used by AES.
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* @return Returns a^2
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*
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* @param a IN/OUT -- value to be doubled
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*/
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uint8_t _double_byte(uint8_t a);
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/*
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* @brief Constant-time algorithm to compare if two sequences of bytes are equal
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||||
* @return Returns 0 if equal, and non-zero otherwise
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||||
*
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* @param a IN -- sequence of bytes a
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* @param b IN -- sequence of bytes b
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* @param size IN -- size of sequences a and b
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*/
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int _compare(const uint8_t *a, const uint8_t *b, size_t size);
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#ifdef __cplusplus
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}
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#endif
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||||
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||||
#endif /* __TC_UTILS_H__ */
|
||||
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