sha1.c File Reference

#include "mbedtls/config.h"
#include "mbedtls/sha1.h"
#include <string.h>
#include "mbedtls/platform.h"
#include "arc4_alt.h"

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Macros
#define	GET_UINT32_BE(n, b, i)
#define	PUT_UINT32_BE(n, b, i)
#define	S(x, n)   ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define	R(t)
#define	P(a, b, c, d, e, x)
#define	F(x, y, z)   (z ^ (x & (y ^ z)))
#define	K   0x5A827999
#define	F(x, y, z)   (x ^ y ^ z)
#define	K   0x6ED9EBA1
#define	F(x, y, z)   ((x & y) | (z & (x | y)))
#define	K   0x8F1BBCDC
#define	F(x, y, z)   (x ^ y ^ z)
#define	K   0xCA62C1D6

Functions
void	mbedtls_sha1_init (mbedtls_sha1_context *ctx)
	Initialize SHA-1 context. More...
void	mbedtls_sha1_free (mbedtls_sha1_context *ctx)
	Clear SHA-1 context. More...
void	mbedtls_sha1_clone (mbedtls_sha1_context *dst, const mbedtls_sha1_context *src)
	Clone (the state of) a SHA-1 context. More...
void	mbedtls_sha1_starts (mbedtls_sha1_context *ctx)
	SHA-1 context setup. More...
void	mbedtls_sha1_process (mbedtls_sha1_context *ctx, const unsigned char data[64])
void	mbedtls_sha1_update (mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen)
	SHA-1 process buffer. More...
void	mbedtls_sha1_finish (mbedtls_sha1_context *ctx, unsigned char output[20])
	SHA-1 final digest. More...
void	mbedtls_sha1 (const unsigned char *input, size_t ilen, unsigned char output[20])
	Output = SHA-1( input buffer ) More...
int	mbedtls_sha1_self_test (int verbose)
	Checkup routine. More...

Variables
static const unsigned char	sha1_padding [64]
static const unsigned char	sha1_test_buf [3][57]
static const int	sha1_test_buflen [3]
static const unsigned char	sha1_test_sum [3][20]

Macro Definition Documentation

F [1/4]

#define F	(		x,
			y,
			z
	)		(z ^ (x & (y ^ z)))

F [2/4]

#define F	(		x,
			y,
			z
	)		(x ^ y ^ z)

F [3/4]

#define F	(		x,
			y,
			z
	)		((x & y) | (z & (x | y)))

F [4/4]

#define F	(		x,
			y,
			z
	)		(x ^ y ^ z)

GET_UINT32_BE

#define GET_UINT32_BE	(		n,
			b,
			i
	)

Value:

{                                                       \
    (n) = ( (uint32_t) (b)[(i)    ] << 24 )             \
        | ( (uint32_t) (b)[(i) + 1] << 16 )             \
        | ( (uint32_t) (b)[(i) + 2] <<  8 )             \
        | ( (uint32_t) (b)[(i) + 3]       );            \
}

K [1/4]

#define K   0x5A827999

K [2/4]

#define K   0x6ED9EBA1

K [3/4]

#define K   0x8F1BBCDC

K [4/4]

#define K   0xCA62C1D6

P

#define P	(		a,
			b,
			c,
			d,
			e,
			x
	)

Value:

{                                                       \
    e += S(a,5) + F(b,c,d) + K + x; b = S(b,30);        \
}

PUT_UINT32_BE

#define PUT_UINT32_BE	(		n,
			b,
			i
	)

Value:

{                                                       \
    (b)[(i)    ] = (unsigned char) ( (n) >> 24 );       \
    (b)[(i) + 1] = (unsigned char) ( (n) >> 16 );       \
    (b)[(i) + 2] = (unsigned char) ( (n) >>  8 );       \
    (b)[(i) + 3] = (unsigned char) ( (n)       );       \
}

R

#define R

(

t

)

Value:

(                                                       \
    temp = W[( t -  3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \
           W[( t - 14 ) & 0x0F] ^ W[  t       & 0x0F],  \
    ( W[t & 0x0F] = S(temp,1) )                         \
)

S

#define S	(		x,
			n
	)		((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

Function Documentation

mbedtls_sha1()

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

Output = SHA-1( input buffer )

Parameters

input	buffer holding the data
ilen	length of the input data
output	SHA-1 checksum result

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mbedtls_sha1_clone()

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

Clone (the state of) a SHA-1 context.

Parameters

dst	The destination context
src	The context to be cloned

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mbedtls_sha1_finish()

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

SHA-1 final digest.

Parameters

ctx	SHA-1 context
output	SHA-1 checksum result

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mbedtls_sha1_free()

void mbedtls_sha1_free

(

mbedtls_sha1_context *

ctx

)

Clear SHA-1 context.

Parameters

ctx	SHA-1 context to be cleared

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mbedtls_sha1_init()

void mbedtls_sha1_init

(

mbedtls_sha1_context *

ctx

)

Initialize SHA-1 context.

Parameters

ctx	SHA-1 context to be initialized

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mbedtls_sha1_process()

void mbedtls_sha1_process	(	mbedtls_sha1_context *	ctx,
		const unsigned char	data[64]
	)

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mbedtls_sha1_self_test()

int mbedtls_sha1_self_test

(

int

verbose

)

Checkup routine.

Returns

0 if successful, or 1 if the test failed

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mbedtls_sha1_starts()

void mbedtls_sha1_starts

(

mbedtls_sha1_context *

ctx

)

SHA-1 context setup.

Parameters

ctx	context to be initialized

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mbedtls_sha1_update()

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

SHA-1 process buffer.

Parameters

ctx	SHA-1 context
input	buffer holding the data
ilen	length of the input data

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Variable Documentation

sha1_padding

const unsigned char sha1_padding[64]

static

Initial value:

=
{
 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
}

sha1_test_buf

const unsigned char sha1_test_buf[3][57]

static

Initial value:

=
{
    { "abc" },
    { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
    { "" }
}

sha1_test_buflen

const int sha1_test_buflen[3]

static

Initial value:

=
{
    3, 56, 1000
}

sha1_test_sum

const unsigned char sha1_test_sum[3][20]

static

Initial value:

=
{
    { 0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E,
      0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D },
    { 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE,
      0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1 },
    { 0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E,
      0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F }
}