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Improve documentation of SHA-512 parameter preconditions

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This commit is contained in:
Hanno Becker 2018-12-18 15:29:32 +00:00
parent ff1052e6b0
commit b5c99f5c72
1 changed files with 60 additions and 53 deletions
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113
include/mbedtls/sha512.h
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@ -71,25 +71,26 @@ mbedtls_sha512_context;
/**
* \brief This function initializes a SHA-512 context.
*
* \param ctx The SHA-512 context to initialize.
* Must not be \c NULL.
* \param ctx The SHA-512 context to initialize. This must
* not be \c NULL.
*/
void mbedtls_sha512_init( mbedtls_sha512_context *ctx );
/**
* \brief This function clears a SHA-512 context.
*
* \param ctx The SHA-512 context to clear.
* \param ctx The SHA-512 context to clear. This may be \c NULL,
* in which case this function does nothing. If it
* is not \c NULL, it must point to an initialized
* SHA-512 context.
*/
void mbedtls_sha512_free( mbedtls_sha512_context *ctx );
/**
* \brief This function clones the state of a SHA-512 context.
*
* \param dst The destination context.
* Must not be \c NULL.
* \param src The context to clone.
* Must not be \c NULL.
* \param dst The destination context. This must be initialized.
* \param src The context to clone. This must be initialized.
*/
void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
const mbedtls_sha512_context *src );
@ -98,12 +99,12 @@ void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
* \brief This function starts a SHA-384 or SHA-512 checksum
* calculation.
*
* \param ctx The SHA-512 context to initialize.
* Must not be \c NULL.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
* \param ctx The SHA-512 context to use. This must be initialized.
* \param is384 Determines which function to use. This must be
* either \c for SHA-512, or \c 1 for SHA-384.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 );
@ -111,13 +112,15 @@ int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 );
* \brief This function feeds an input buffer into an ongoing
* SHA-512 checksum calculation.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param input The buffer holding the input data.
* Must not be \c NULL if \p ilen is greater than 0.
* \param ilen The length of the input data.
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param input The buffer holding the input data. This must
* be a readable buffer of length \p ilen Bytes.
* It must not be \c NULL.
* \param ilen The length of the input data \p input in Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx,
const unsigned char *input,
@ -128,12 +131,13 @@ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx,
* the result to the output buffer. This function is for
* internal use only.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param output The SHA-384 or SHA-512 checksum result.
* Must not be \c NULL.
* This must be a writable buffer of length \c 64 Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
unsigned char output[64] );
@ -142,12 +146,13 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
* \brief This function processes a single data block within
* the ongoing SHA-512 computation.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param data The buffer holding one block of data.
* Must not be \c NULL.
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param data The buffer holding one block of data. This
* must be a readable buffer of length \c 128 Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
const unsigned char data[128] );
@ -163,10 +168,9 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
*
* \deprecated Superseded by mbedtls_sha512_starts_ret() in 2.7.0
*
* \param ctx The SHA-512 context to initialize.
* Must not be \c NULL.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
* \param ctx The SHA-512 context to use. This must be initialized.
* \param is384 Determines which function to use. This must be either
* \c 0 for SHA-512 or \c 1 for SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx,
int is384 );
@ -177,11 +181,11 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx,
*
* \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param input The buffer holding the data.
* Must not be \c NULL if \p ilen is greater than 0.
* \param ilen The length of the input data.
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param input The buffer holding the data. This must be a readable
* buffer of length \p ilen Bytes. It must not be \c NULL.
* \param ilen The length of the input data \p input in Bytes.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx,
const unsigned char *input,
@ -193,10 +197,10 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx,
*
* \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param output The SHA-384 or SHA-512 checksum result.
* Must not be \c NULL.
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param output The SHA-384 or SHA-512 checksum result. This must
* be a writable buffer of size \c 64 Bytes.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_finish( mbedtls_sha512_context *ctx,
unsigned char output[64] );
@ -208,10 +212,10 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_finish( mbedtls_sha512_context *ctx,
*
* \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0.
*
* \param ctx The SHA-512 context.
* Must not be \c NULL.
* \param data The buffer holding one block of data.
* Must not be \c NULL.
* \param ctx The SHA-512 context. This must be initialized and
* have a hash operation started.
* \param data The buffer holding one block of data. This must be
* a readable buffer of length \c 128 Bytes.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_process(
mbedtls_sha512_context *ctx,
@ -230,15 +234,17 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_process(
* The SHA-512 result is calculated as
* output = SHA-512(input buffer).
*
* \param input The buffer holding the input data.
* Must not be \c NULL if \p ilen is greater than 0.
* \param ilen The length of the input data.
* \param input The buffer holding the input data. This must be
* a readable buffer of length \p ilen Bytes. It
* must not be \c NULL.
* \param ilen The length of the input data \p input in Bytes.
* \param output The SHA-384 or SHA-512 checksum result.
* Must not be \c NULL.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
* This must be a writable buffer of length \c 64 Bytes.
* \param is384 Determines which function to use. This must be either
* \c 0 for SHA-512, or \c 1 for SHA-384.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha512_ret( const unsigned char *input,
size_t ilen,
@ -263,13 +269,14 @@ int mbedtls_sha512_ret( const unsigned char *input,
*
* \deprecated Superseded by mbedtls_sha512_ret() in 2.7.0
*
* \param input The buffer holding the data.
* Must not be \c NULL if \p ilen is greater than 0.
* \param ilen The length of the input data.
* \param output The SHA-384 or SHA-512 checksum result.
* Must not be \c NULL.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
* \param input The buffer holding the data. This must be a
* readable buffer of length \p ilen Bytes. It
* must not be \c NULL.
* \param ilen The length of the input data \p input in Bytes.
* \param output The SHA-384 or SHA-512 checksum result. This must
* be a writable buffer of length \c 64 Bytes.
* \param is384 Determines which function to use. This must be eiher
* \c 0 for SHA-512, or \c 1 for SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512( const unsigned char *input,
size_t ilen,