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Update sha256.h

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Minor documentation improvements:
*Standardized file brief description.
*Separated return statements.
*Reordered tags within documentation blocks so that params and returns are last in block.
*Removed bullets from parameter descriptions.
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Rose Zadik 2018-03-27 12:59:13 +01:00 committed by GitHub
parent f65379bc40
commit bde68b48d4
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1 changed files with 24 additions and 23 deletions
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45
include/mbedtls/sha256.h
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@ -1,7 +1,10 @@
/** /**
* \file sha256.h * \file sha256.h
* *
* \brief The SHA-224 and SHA-256 cryptographic hash function. * \brief This file contains SHA-224 and SHA-256 definitions and functions.
*
* The Secure Hash Algorithms 224 and 256 (SHA-224 and SHA-256) cryptographic
* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
*/ */
/* /*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -55,9 +58,8 @@ typedef struct
uint32_t total[2]; /*!< The number of Bytes processed. */ uint32_t total[2]; /*!< The number of Bytes processed. */
uint32_t state[8]; /*!< The intermediate digest state. */ uint32_t state[8]; /*!< The intermediate digest state. */
unsigned char buffer[64]; /*!< The data block being processed. */ unsigned char buffer[64]; /*!< The data block being processed. */
int is224; /*!< Determines which function to use. int is224; /*!< Determines which function to use:
<ul><li>0: Use SHA-256.</li> 0: Use SHA-256, or 1: Use SHA-224. */
<li>1: Use SHA-224.</li></ul> */
} }
mbedtls_sha256_context; mbedtls_sha256_context;
@ -89,9 +91,8 @@ void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
* calculation. * calculation.
* *
* \param ctx The context to initialize. * \param ctx The context to initialize.
* \param is224 Determines which function to use. * \param is224 Determines which function to use:
* <ul><li>0: Use SHA-256.</li> * 0: Use SHA-256, or 1: Use SHA-224.
* <li>1: Use SHA-224.</li></ul>
* *
* \return \c 0 on success. * \return \c 0 on success.
*/ */
@ -101,9 +102,9 @@ int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 );
* \brief This function feeds an input buffer into an ongoing * \brief This function feeds an input buffer into an ongoing
* SHA-256 checksum calculation. * SHA-256 checksum calculation.
* *
* \param ctx SHA-256 context * \param ctx The SHA-256 context to initialize.
* \param input buffer holding the data * \param input The buffer holding the data.
* \param ilen length of the input data * \param ilen The length of the input data.
* *
* \return \c 0 on success. * \return \c 0 on success.
*/ */
@ -143,14 +144,15 @@ int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
#define MBEDTLS_DEPRECATED #define MBEDTLS_DEPRECATED
#endif #endif
/** /**
* \brief This function starts a SHA-256 checksum calculation. * \brief This function starts a SHA-224 or SHA-256 checksum
* calculation.
*
* *
* \deprecated Superseded by mbedtls_sha256_starts_ret() in 2.7.0. * \deprecated Superseded by mbedtls_sha256_starts_ret() in 2.7.0.
* *
* \param ctx The SHA-256 context to initialize. * \param ctx The context to initialize.
* \param is224 Determines which function to use. * \param is224 Determines which function to use:
* <ul><li>0: Use SHA-256.</li> * 0: Use SHA-256, or 1: Use SHA-224.
* <li>1: Use SHA-224.</li></ul>
*/ */
MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx,
int is224 ); int is224 );
@ -221,9 +223,8 @@ extern "C" {
* \param input The buffer holding the input data. * \param input The buffer holding the input data.
* \param ilen The length of the input data. * \param ilen The length of the input data.
* \param output The SHA-224 or SHA-256 checksum result. * \param output The SHA-224 or SHA-256 checksum result.
* \param is224 Determines which function to use. * \param is224 Determines which function to use:
* <ul><li>0: Use SHA-256.</li> * 0: Use SHA-256, or 1: Use SHA-224.
* <li>1: Use SHA-224.</li></ul>
*/ */
int mbedtls_sha256_ret( const unsigned char *input, int mbedtls_sha256_ret( const unsigned char *input,
size_t ilen, size_t ilen,
@ -252,9 +253,8 @@ int mbedtls_sha256_ret( const unsigned char *input,
* \param input The buffer holding the data. * \param input The buffer holding the data.
* \param ilen The length of the input data. * \param ilen The length of the input data.
* \param output The SHA-224 or SHA-256 checksum result. * \param output The SHA-224 or SHA-256 checksum result.
* \param is224 Determines which function to use. * \param is224 Determines which function to use:
* <ul><li>0: Use SHA-256.</li> * 0: Use SHA-256, or 1: Use SHA-224.
* <li>1: Use SHA-224.</li></ul>
*/ */
MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input, MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input,
size_t ilen, size_t ilen,
@ -267,7 +267,8 @@ MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input,
/** /**
* \brief The SHA-224 and SHA-256 checkup routine. * \brief The SHA-224 and SHA-256 checkup routine.
* *
* \return \c 0 on success, or \c 1 on failure. * \return \c 0 on success.
* \return \c 1 on failure.
*/ */
int mbedtls_sha256_self_test( int verbose ); int mbedtls_sha256_self_test( int verbose );