md5.c File Reference

#include "mbedtls/config.h"
#include "mbedtls/md5.h"
#include <string.h>
#include "mbedtls/platform.h"
#include "arc4_alt.h"

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Macros
#define	GET_UINT32_LE(n, b, i)
#define	PUT_UINT32_LE(n, b, i)
#define	S(x, n)   ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define	P(a, b, c, d, k, s, t)
#define	F(x, y, z)   (z ^ (x & (y ^ z)))
#define	F(x, y, z)   (y ^ (z & (x ^ y)))
#define	F(x, y, z)   (x ^ y ^ z)
#define	F(x, y, z)   (y ^ (x | ~z))

Functions
void	mbedtls_md5_init (mbedtls_md5_context *ctx)
	Initialize MD5 context. More...
void	mbedtls_md5_free (mbedtls_md5_context *ctx)
	Clear MD5 context. More...
void	mbedtls_md5_clone (mbedtls_md5_context *dst, const mbedtls_md5_context *src)
	Clone (the state of) an MD5 context. More...
void	mbedtls_md5_starts (mbedtls_md5_context *ctx)
	MD5 context setup. More...
void	mbedtls_md5_process (mbedtls_md5_context *ctx, const unsigned char data[64])
void	mbedtls_md5_update (mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen)
	MD5 process buffer. More...
void	mbedtls_md5_finish (mbedtls_md5_context *ctx, unsigned char output[16])
	MD5 final digest. More...
void	mbedtls_md5 (const unsigned char *input, size_t ilen, unsigned char output[16])
	Output = MD5( input buffer ) More...
int	mbedtls_md5_self_test (int verbose)
	Checkup routine. More...

Variables
static const unsigned char	md5_padding [64]
static const unsigned char	md5_test_buf [7][81]
static const int	md5_test_buflen [7]
static const unsigned char	md5_test_sum [7][16]

Macro Definition Documentation

F [1/4]

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

F [2/4]

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

F [3/4]

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

F [4/4]

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

GET_UINT32_LE

#define GET_UINT32_LE	(		n,
			b,
			i
	)

Value:

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

P

#define P	(		a,
			b,
			c,
			d,
			k,
			s,
			t
	)

Value:

{                                                       \
    a += F(b,c,d) + X[k] + t; a = S(a,s) + b;           \
}

PUT_UINT32_LE

#define PUT_UINT32_LE	(		n,
			b,
			i
	)

Value:

{                                                               \
    (b)[(i)    ] = (unsigned char) ( ( (n)       ) & 0xFF );    \
    (b)[(i) + 1] = (unsigned char) ( ( (n) >>  8 ) & 0xFF );    \
    (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF );    \
    (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF );    \
}

S

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

Function Documentation

mbedtls_md5()

void mbedtls_md5	(	const unsigned char *	input,
		size_t	ilen,
		unsigned char	output[16]
	)

Output = MD5( input buffer )

Parameters

input	buffer holding the data
ilen	length of the input data
output	MD5 checksum result

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mbedtls_md5_clone()

void mbedtls_md5_clone	(	mbedtls_md5_context *	dst,
		const mbedtls_md5_context *	src
	)

Clone (the state of) an MD5 context.

Parameters

dst	The destination context
src	The context to be cloned

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mbedtls_md5_finish()

void mbedtls_md5_finish	(	mbedtls_md5_context *	ctx,
		unsigned char	output[16]
	)

MD5 final digest.

Parameters

ctx	MD5 context
output	MD5 checksum result

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mbedtls_md5_free()

void mbedtls_md5_free

(

mbedtls_md5_context *

ctx

)

Clear MD5 context.

Parameters

ctx	MD5 context to be cleared

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mbedtls_md5_init()

void mbedtls_md5_init

(

mbedtls_md5_context *

ctx

)

Initialize MD5 context.

Parameters

ctx	MD5 context to be initialized

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mbedtls_md5_process()

void mbedtls_md5_process	(	mbedtls_md5_context *	ctx,
		const unsigned char	data[64]
	)

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mbedtls_md5_self_test()

int mbedtls_md5_self_test

(

int

verbose

)

Checkup routine.

Returns

0 if successful, or 1 if the test failed

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mbedtls_md5_starts()

void mbedtls_md5_starts

(

mbedtls_md5_context *

ctx

)

MD5 context setup.

Parameters

ctx	context to be initialized

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mbedtls_md5_update()

void mbedtls_md5_update	(	mbedtls_md5_context *	ctx,
		const unsigned char *	input,
		size_t	ilen
	)

MD5 process buffer.

Parameters

ctx	MD5 context
input	buffer holding the data
ilen	length of the input data

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Variable Documentation

md5_padding

const unsigned char md5_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
}

md5_test_buf

const unsigned char md5_test_buf[7][81]

static

Initial value:

=
{
    { "" },
    { "a" },
    { "abc" },
    { "message digest" },
    { "abcdefghijklmnopqrstuvwxyz" },
    { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
    { "12345678901234567890123456789012345678901234567890123456789012" 
      "345678901234567890" }
}

md5_test_buflen

const int md5_test_buflen[7]

static

Initial value:

=
{
    0, 1, 3, 14, 26, 62, 80
}

md5_test_sum

const unsigned char md5_test_sum[7][16]

static

Initial value:

=
{
    { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
      0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
    { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
      0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
    { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
      0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
    { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
      0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
    { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
      0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
    { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
      0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
    { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
      0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
}