This file contains SHA-1 definitions and functions. More...

#include "mbedtls/private_access.h"
#include "mbedtls/build_info.h"
#include <stddef.h>
#include <stdint.h>
#include "sha1_alt.h"

Include dependency graph for sha1.h:

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Macros
#define	MBEDTLS_ERR_SHA1_BAD_INPUT_DATA -0x0073

Functions
void	mbedtls_sha1_init (mbedtls_sha1_context *ctx)
	This function initializes a SHA-1 context. More...

void	mbedtls_sha1_free (mbedtls_sha1_context *ctx)
	This function clears a SHA-1 context. More...

void	mbedtls_sha1_clone (mbedtls_sha1_context dst, const mbedtls_sha1_context src)
	This function clones the state of a SHA-1 context. More...

int	mbedtls_sha1_starts (mbedtls_sha1_context *ctx)
	This function starts a SHA-1 checksum calculation. More...

int	mbedtls_sha1_update (mbedtls_sha1_context ctx, const unsigned char input, size_t ilen)
	This function feeds an input buffer into an ongoing SHA-1 checksum calculation. More...

int	mbedtls_sha1_finish (mbedtls_sha1_context *ctx, unsigned char output[20])
	This function finishes the SHA-1 operation, and writes the result to the output buffer. More...

int	mbedtls_internal_sha1_process (mbedtls_sha1_context *ctx, const unsigned char data[64])
	SHA-1 process data block (internal use only). More...

int	mbedtls_sha1 (const unsigned char *input, size_t ilen, unsigned char output[20])
	This function calculates the SHA-1 checksum of a buffer. More...

int	mbedtls_sha1_self_test (int verbose)
	The SHA-1 checkup routine. More...

Detailed Description

This file contains SHA-1 definitions and functions.

The Secure Hash Algorithm 1 (SHA-1) cryptographic hash function is defined in FIPS 180-4: Secure Hash Standard (SHS).

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Definition in file sha1.h.

Macro Definition Documentation

#define MBEDTLS_ERR_SHA1_BAD_INPUT_DATA -0x0073

SHA-1 input data was malformed.

Definition at line 39 of file sha1.h.

Function Documentation

int mbedtls_internal_sha1_process	(	mbedtls_sha1_context *	ctx,
		const unsigned char	data[64]
	)

SHA-1 process data block (internal use only).

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context to use. This must be initialized.
data	The data block being processed. This must be a readable buffer of length `64` Bytes.

Returns: 0 on success.; A negative error code on failure.

int mbedtls_sha1	(	const unsigned char *	input,
		size_t	ilen,
		unsigned char	output[20]
	)

This function calculates the SHA-1 checksum of a buffer.

The function allocates the context, performs the calculation, and frees the context.

The SHA-1 result is calculated as output = SHA-1(input buffer).

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

input	The buffer holding the input data. This must be a readable buffer of length `ilen` Bytes.
ilen	The length of the input data `input` in Bytes.
output	The SHA-1 checksum result. This must be a writable buffer of length `20` Bytes.

Returns: 0 on success.; A negative error code on failure.

void mbedtls_sha1_clone	(	mbedtls_sha1_context *	dst,
		const mbedtls_sha1_context *	src
	)

This function clones the state of a SHA-1 context.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

dst	The SHA-1 context to clone to. This must be initialized.
src	The SHA-1 context to clone from. This must be initialized.

int mbedtls_sha1_finish	(	mbedtls_sha1_context *	ctx,
		unsigned char	output[20]
	)

This function finishes the SHA-1 operation, and writes the result to the output buffer.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context to use. This must be initialized and have a hash operation started.
output	The SHA-1 checksum result. This must be a writable buffer of length `20` Bytes.

Returns: 0 on success.; A negative error code on failure.

void mbedtls_sha1_free ( mbedtls_sha1_context * ctx )

This function clears a SHA-1 context.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context to clear. This may be `NULL`, in which case this function does nothing. If it is not `NULL`, it must point to an initialized SHA-1 context.

void mbedtls_sha1_init ( mbedtls_sha1_context * ctx )

This function initializes a SHA-1 context.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context to initialize. This must not be `NULL`.

int mbedtls_sha1_self_test ( int verbose )

The SHA-1 checkup routine.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Returns: 0 on success.; 1 on failure.

int mbedtls_sha1_starts ( mbedtls_sha1_context * ctx )

This function starts a SHA-1 checksum calculation.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context to initialize. This must be initialized.

Returns: 0 on success.; A negative error code on failure.

int mbedtls_sha1_update	(	mbedtls_sha1_context *	ctx,
		const unsigned char *	input,
		size_t	ilen
	)

This function feeds an input buffer into an ongoing SHA-1 checksum calculation.

Warning: SHA-1 is considered a weak message digest and its use constitutes a security risk. We recommend considering stronger message digests instead.

Parameters

ctx	The SHA-1 context. This must be initialized and have a hash operation started.
input	The buffer holding the input data. This must be a readable buffer of length `ilen` Bytes.
ilen	The length of the input data `input` in Bytes.

Returns: 0 on success.; A negative error code on failure.

Macros

Functions

Detailed Description

Macro Definition Documentation

Function Documentation