#include "mbedtls/config.h"
#include "mbedtls/md.h"
#include "mbedtls/md_internal.h"
#include "mbedtls/platform.h"
#include <string.h>
#include <stdio.h>
#include "arc4_alt.h"

Include dependency graph for md.c:

Functions
const int *	mbedtls_md_list (void)
	Returns the list of digests supported by the generic digest module. More...

const mbedtls_md_info_t *	mbedtls_md_info_from_string (const char *md_name)
	Returns the message digest information associated with the given digest name. More...

const mbedtls_md_info_t *	mbedtls_md_info_from_type (mbedtls_md_type_t md_type)
	Returns the message digest information associated with the given digest type. More...

void	mbedtls_md_init (mbedtls_md_context_t *ctx)
	Initialize a md_context (as NONE) This should always be called first. Prepares the context for mbedtls_md_setup() or mbedtls_md_free(). More...

void	mbedtls_md_free (mbedtls_md_context_t *ctx)
	Free and clear the internal structures of ctx. Can be called at any time after mbedtls_md_init(). Mandatory once mbedtls_md_setup() has been called. More...

int	mbedtls_md_clone (mbedtls_md_context_t dst, const mbedtls_md_context_t src)
	Clone the state of an MD context. More...

int	mbedtls_md_init_ctx (mbedtls_md_context_t ctx, const mbedtls_md_info_t md_info)
	Select MD to use and allocate internal structures. Should be called after mbedtls_md_init() or mbedtls_md_free(). Makes it necessary to call mbedtls_md_free() later. More...

int	mbedtls_md_setup (mbedtls_md_context_t ctx, const mbedtls_md_info_t md_info, int hmac)
	Select MD to use and allocate internal structures. Should be called after mbedtls_md_init() or mbedtls_md_free(). Makes it necessary to call mbedtls_md_free() later. More...

int	mbedtls_md_starts (mbedtls_md_context_t *ctx)
	Prepare the context to digest a new message. Generally called after mbedtls_md_setup() or mbedtls_md_finish(). Followed by mbedtls_md_update(). More...

int	mbedtls_md_update (mbedtls_md_context_t ctx, const unsigned char input, size_t ilen)
	Generic message digest process buffer Called between mbedtls_md_starts() and mbedtls_md_finish(). May be called repeatedly. More...

int	mbedtls_md_finish (mbedtls_md_context_t ctx, unsigned char output)
	Generic message digest final digest Called after mbedtls_md_update(). Usually followed by mbedtls_md_free() or mbedtls_md_starts(). More...

int	mbedtls_md (const mbedtls_md_info_t md_info, const unsigned char input, size_t ilen, unsigned char *output)
	Output = message_digest( input buffer ) More...

int	mbedtls_md_file (const mbedtls_md_info_t md_info, const char path, unsigned char *output)

int	mbedtls_md_hmac_starts (mbedtls_md_context_t ctx, const unsigned char key, size_t keylen)
	Set HMAC key and prepare to authenticate a new message. Usually called after mbedtls_md_setup() or mbedtls_md_hmac_finish(). More...

int	mbedtls_md_hmac_update (mbedtls_md_context_t ctx, const unsigned char input, size_t ilen)
	Generic HMAC process buffer. Called between mbedtls_md_hmac_starts() or mbedtls_md_hmac_reset() and mbedtls_md_hmac_finish(). May be called repeatedly. More...

int	mbedtls_md_hmac_finish (mbedtls_md_context_t ctx, unsigned char output)
	Output HMAC. Called after mbedtls_md_hmac_update(). Usually followed by mbedtls_md_hmac_reset(), mbedtls_md_hmac_starts(), or mbedtls_md_free(). More...

int	mbedtls_md_hmac_reset (mbedtls_md_context_t *ctx)
	Prepare to authenticate a new message with the same key. Called after mbedtls_md_hmac_finish() and before mbedtls_md_hmac_update(). More...

int	mbedtls_md_hmac (const mbedtls_md_info_t md_info, const unsigned char key, size_t keylen, const unsigned char input, size_t ilen, unsigned char output)
	Output = Generic_HMAC( hmac key, input buffer ) More...

int	mbedtls_md_process (mbedtls_md_context_t ctx, const unsigned char data)

unsigned char	mbedtls_md_get_size (const mbedtls_md_info_t *md_info)
	Returns the size of the message digest output. More...

mbedtls_md_type_t	mbedtls_md_get_type (const mbedtls_md_info_t *md_info)
	Returns the type of the message digest output. More...

const char *	mbedtls_md_get_name (const mbedtls_md_info_t *md_info)
	Returns the name of the message digest output. More...

Variables
static const int	supported_digests []

Function Documentation

◆ mbedtls_md()

int mbedtls_md	(	const mbedtls_md_info_t *	md_info,
		const unsigned char *	input,
		size_t	ilen,
		unsigned char *	output
	)

Output = message_digest( input buffer )

Parameters

md_info	message digest info
input	buffer holding the data
ilen	length of the input data
output	Generic message digest checksum result

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_clone()

int mbedtls_md_clone	(	mbedtls_md_context_t *	dst,
		const mbedtls_md_context_t *	src
	)

Clone the state of an MD context.

Note: The two contexts must have been setup to the same type (cloning from SHA-256 to SHA-512 make no sense).

Warning: Only clones the MD state, not the HMAC state! (for now)

Parameters

dst	The destination context
src	The context to be cloned

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure.

◆ mbedtls_md_file()

int mbedtls_md_file	(	const mbedtls_md_info_t *	md_info,
		const char *	path,
		unsigned char *	output
	)

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◆ mbedtls_md_finish()

int mbedtls_md_finish	(	mbedtls_md_context_t *	ctx,
		unsigned char *	output
	)

Generic message digest final digest Called after mbedtls_md_update(). Usually followed by mbedtls_md_free() or mbedtls_md_starts().

Parameters

ctx	Generic message digest context
output	Generic message digest checksum result

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_free()

void mbedtls_md_free ( mbedtls_md_context_t * ctx )

Free and clear the internal structures of ctx. Can be called at any time after mbedtls_md_init(). Mandatory once mbedtls_md_setup() has been called.

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◆ mbedtls_md_get_name()

const char* mbedtls_md_get_name ( const mbedtls_md_info_t * md_info )

Returns the name of the message digest output.

Parameters

md_info message digest info

Returns: name of the message digest output.

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◆ mbedtls_md_get_size()

unsigned char mbedtls_md_get_size ( const mbedtls_md_info_t * md_info )

Returns the size of the message digest output.

Parameters

md_info message digest info

Returns: size of the message digest output in bytes.

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◆ mbedtls_md_get_type()

mbedtls_md_type_t mbedtls_md_get_type ( const mbedtls_md_info_t * md_info )

Returns the type of the message digest output.

Parameters

md_info message digest info

Returns: type of the message digest output.

◆ mbedtls_md_hmac()

int mbedtls_md_hmac	(	const mbedtls_md_info_t *	md_info,
		const unsigned char *	key,
		size_t	keylen,
		const unsigned char *	input,
		size_t	ilen,
		unsigned char *	output
	)

Output = Generic_HMAC( hmac key, input buffer )

Parameters

md_info	message digest info
key	HMAC secret key
keylen	length of the HMAC key in bytes
input	buffer holding the data
ilen	length of the input data
output	Generic HMAC-result

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_hmac_finish()

int mbedtls_md_hmac_finish	(	mbedtls_md_context_t *	ctx,
		unsigned char *	output
	)

Output HMAC. Called after mbedtls_md_hmac_update(). Usually followed by mbedtls_md_hmac_reset(), mbedtls_md_hmac_starts(), or mbedtls_md_free().

Parameters

ctx	HMAC context
output	Generic HMAC checksum result

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_hmac_reset()

int mbedtls_md_hmac_reset ( mbedtls_md_context_t * ctx )

Prepare to authenticate a new message with the same key. Called after mbedtls_md_hmac_finish() and before mbedtls_md_hmac_update().

Parameters

ctx	HMAC context to be reset

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_hmac_starts()

int mbedtls_md_hmac_starts	(	mbedtls_md_context_t *	ctx,
		const unsigned char *	key,
		size_t	keylen
	)

Set HMAC key and prepare to authenticate a new message. Usually called after mbedtls_md_setup() or mbedtls_md_hmac_finish().

Parameters

ctx	HMAC context
key	HMAC secret key
keylen	length of the HMAC key in bytes

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_hmac_update()

int mbedtls_md_hmac_update	(	mbedtls_md_context_t *	ctx,
		const unsigned char *	input,
		size_t	ilen
	)

Generic HMAC process buffer. Called between mbedtls_md_hmac_starts() or mbedtls_md_hmac_reset() and mbedtls_md_hmac_finish(). May be called repeatedly.

Parameters

ctx	HMAC context
input	buffer holding the data
ilen	length of the input data

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_info_from_string()

const mbedtls_md_info_t* mbedtls_md_info_from_string ( const char * md_name )

Returns the message digest information associated with the given digest name.

Parameters

md_name Name of the digest to search for.

Returns: The message digest information associated with md_name or NULL if not found.

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◆ mbedtls_md_info_from_type()

const mbedtls_md_info_t* mbedtls_md_info_from_type ( mbedtls_md_type_t md_type )

Returns the message digest information associated with the given digest type.

Parameters

md_type type of digest to search for.

Returns: The message digest information associated with md_type or NULL if not found.

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◆ mbedtls_md_init()

void mbedtls_md_init ( mbedtls_md_context_t * ctx )

Initialize a md_context (as NONE) This should always be called first. Prepares the context for mbedtls_md_setup() or mbedtls_md_free().

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◆ mbedtls_md_init_ctx()

int mbedtls_md_init_ctx	(	mbedtls_md_context_t *	ctx,
		const mbedtls_md_info_t *	md_info
	)

Select MD to use and allocate internal structures. Should be called after mbedtls_md_init() or mbedtls_md_free(). Makes it necessary to call mbedtls_md_free() later.

Deprecated:: Superseded by mbedtls_md_setup() in 2.0.0

Parameters

ctx	Context to set up.
md_info	Message digest to use.

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure, MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.

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◆ mbedtls_md_list()

const int* mbedtls_md_list ( void )

Returns the list of digests supported by the generic digest module.

Returns: a statically allocated array of digests, the last entry is 0.

◆ mbedtls_md_process()

int mbedtls_md_process	(	mbedtls_md_context_t *	ctx,
		const unsigned char *	data
	)

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◆ mbedtls_md_setup()

int mbedtls_md_setup	(	mbedtls_md_context_t *	ctx,
		const mbedtls_md_info_t *	md_info,
		int	hmac
	)

Select MD to use and allocate internal structures. Should be called after mbedtls_md_init() or mbedtls_md_free(). Makes it necessary to call mbedtls_md_free() later.

Parameters

ctx	Context to set up.
md_info	Message digest to use.
hmac	0 to save some memory if HMAC will not be used, non-zero is HMAC is going to be used with this context.

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure, MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.

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◆ mbedtls_md_starts()

int mbedtls_md_starts ( mbedtls_md_context_t * ctx )

Prepare the context to digest a new message. Generally called after mbedtls_md_setup() or mbedtls_md_finish(). Followed by mbedtls_md_update().

Parameters

ctx	generic message digest context.

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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◆ mbedtls_md_update()

int mbedtls_md_update	(	mbedtls_md_context_t *	ctx,
		const unsigned char *	input,
		size_t	ilen
	)

Generic message digest process buffer Called between mbedtls_md_starts() and mbedtls_md_finish(). May be called repeatedly.

Parameters

ctx	Generic message digest context
input	buffer holding the datal
ilen	length of the input data

Returns: 0 on success, MBEDTLS_ERR_MD_BAD_INPUT_DATA if parameter verification fails.

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Variable Documentation

◆ supported_digests

const int supported_digests[]

static

Functions

Variables

Function Documentation

◆ mbedtls_md()

◆ mbedtls_md_clone()

◆ mbedtls_md_file()

◆ mbedtls_md_finish()

◆ mbedtls_md_free()

◆ mbedtls_md_get_name()

◆ mbedtls_md_get_size()

◆ mbedtls_md_get_type()

◆ mbedtls_md_hmac()

◆ mbedtls_md_hmac_finish()

◆ mbedtls_md_hmac_reset()

◆ mbedtls_md_hmac_starts()

◆ mbedtls_md_hmac_update()

◆ mbedtls_md_info_from_string()

◆ mbedtls_md_info_from_type()

◆ mbedtls_md_init()

◆ mbedtls_md_init_ctx()

◆ mbedtls_md_list()

◆ mbedtls_md_process()

◆ mbedtls_md_setup()

◆ mbedtls_md_starts()

◆ mbedtls_md_update()

Variable Documentation

◆ supported_digests