md5.cc File Reference

md5 digest routines. More...

#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include "md5.h"

Include dependency graph for md5.cc:

Go to the source code of this file.

Macros
#define	SELF_TEST   1
#define	_CRT_SECURE_NO_DEPRECATE   1
#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	md5_starts (md5_context *ctx)
	Initialize and setup a MD5 context structure. More...
static void	md5_process (md5_context *ctx, const unsigned char data[64])
void	md5_update (md5_context *ctx, const unsigned char *input, int ilen)
	Adds data to the MD5 process buffer. More...
void	md5_finish (md5_context *ctx, unsigned char output[16])
	Retrieve the final MD5 digest. More...
int	md5_file (char *path, unsigned char output[16])
void	md5_csum (const unsigned char *input, int ilen, unsigned char output[16])
	Convenience function to calculate the MD5 sum of an input buffer. More...
void	md5_hmac (unsigned char *key, int keylen, const unsigned char *input, int ilen, unsigned char output[16])
	Calculates a "Hashed MAC" of an input buffer combined with a secret key. More...
void	md5_hex (const void *input, size_t len, char output[33])
	Convenience function to calculate the MD5 sum of an input buffer; returns string with the MD5 encoded in hexadecimal. More...
void	md5_string (const char *input, char output[33])
	Calculates the hex string of MD5 of null terminated input. More...
int64_t	md5_hash (const char *input)
	Returns a 64-bit hash checksum of a null terminated input buffer. More...
void	digest_to_trunc_modified_base64 (const char digest[16], char output[17])
	Get the modified base64 encoded string of a 16 byte message digest see http://en.wikipedia.org/wiki/Base64#URL_applications for more information. More...
void	md5_trunc_modified_base64 (const char *input, char output[17])
	Get the modified base64 encoded string of the first 12 Bytes of the 16 Byte MD5 code of a null terminated output; see http://en.wikipedia.org/wiki/Base64#URL_applications for more information. More...
int	md5_self_test (void)
	Runs a self test. More...

Variables
static const char	mb64_charset [] ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
static const unsigned char	md5_padding [64]
static const char	_md5_src [] = "_md5_src"
static const char	hex_digits [] = "0123456789ABCDEF"
static const char	md5_test_str [7][81]
static const unsigned char	md5_test_sum [7][16]

Detailed Description

md5 digest routines.

This file implements the md5 digest algorithm and also has several helper functions like calculating the md5 of a file or a string. The MD5 algorithm was designed by Ron Rivest in 1991 (http://www.ietf.org/rfc/rfc1321.txt).

Definition in file md5.cc.

Macro Definition Documentation

#define _CRT_SECURE_NO_DEPRECATE   1

Definition at line 32 of file md5.cc.

#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))

#define GET_UINT32_LE	(		n,
			b,
			i
	)

Value:

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

Definition at line 50 of file md5.cc.

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

Value:

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

#define PUT_UINT32_LE	(		n,
			b,
			i
	)

Value:

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

Definition at line 59 of file md5.cc.

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

#define SELF_TEST   1

Definition at line 30 of file md5.cc.

Function Documentation

int md5_file	(	char *	path,
		unsigned char	output[16]
	)

Definition at line 288 of file md5.cc.

static void md5_process ( md5_context *  ctx, const unsigned char  data[64]  )

static

Definition at line 82 of file md5.cc.

Variable Documentation

const char _md5_src[] = "_md5_src"

static

Definition at line 362 of file md5.cc.

const char hex_digits[] = "0123456789ABCDEF"

static

Definition at line 364 of file md5.cc.

const char mb64_charset[] ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"

static

Definition at line 44 of file md5.cc.

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
}

Definition at line 249 of file md5.cc.

const char md5_test_str[7][81]

static

Initial value:

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

Definition at line 442 of file md5.cc.

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 }
}

Definition at line 454 of file md5.cc.