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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
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/**
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* \file sha1.h
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* based from http://xyssl.org/code/source/sha1/
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* FIPS-180-1 compliant SHA-1 implementation
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*
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* Copyright (C) 2003-2006 Christophe Devine
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*/
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/*
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* The SHA-1 standard was published by NIST in 1993.
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*
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* http://www.itl.nist.gov/fipspubs/fip180-1.htm
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*/
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#ifndef _SHA1_H
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#define _SHA1_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SHA1_SUM_POS -0x20
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#define SHA1_SUM_LEN 20
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#define SHA1_DER_LEN 15
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extern const uint8_t sha1_der_prefix[];
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/**
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* \brief SHA-1 context structure
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*/
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typedef struct
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{
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unsigned long total[2]; /*!< number of bytes processed */
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unsigned long state[5]; /*!< intermediate digest state */
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unsigned char buffer[64]; /*!< data block being processed */
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}
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sha1_context;
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/**
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* \brief SHA-1 context setup
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*
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* \param ctx SHA-1 context to be initialized
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*/
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void sha1_starts( sha1_context *ctx );
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/**
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* \brief SHA-1 process buffer
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*
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* \param ctx SHA-1 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*/
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void sha1_update(sha1_context *ctx, const unsigned char *input,
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unsigned int ilen);
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/**
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* \brief SHA-1 final digest
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*
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* \param ctx SHA-1 context
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* \param output SHA-1 checksum result
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*/
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void sha1_finish( sha1_context *ctx, unsigned char output[20] );
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/**
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* \brief Output = SHA-1( input buffer )
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output SHA-1 checksum result
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*/
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void sha1_csum(const unsigned char *input, unsigned int ilen,
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unsigned char *output);
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/**
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* \brief Output = SHA-1( input buffer ), with watchdog triggering
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output SHA-1 checksum result
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* \param chunk_sz watchdog triggering period (in bytes of input processed)
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*/
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void sha1_csum_wd(const unsigned char *input, unsigned int ilen,
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unsigned char *output, unsigned int chunk_sz);
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/**
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* \brief Output = HMAC-SHA-1( input buffer, hmac key )
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*
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* \param key HMAC secret key
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* \param keylen length of the HMAC key
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output HMAC-SHA-1 result
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*/
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void sha1_hmac(const unsigned char *key, int keylen,
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const unsigned char *input, unsigned int ilen,
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unsigned char *output);
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int sha1_self_test( void );
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#ifdef __cplusplus
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}
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#endif
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#endif /* sha1.h */
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