md5.c File Reference

#include <gpac/tools.h>

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Data Structures
struct	MD5Context

Macros
#define	A   0x67452301
#define	B   0xefcdab89
#define	C   0x98badcfe
#define	D   0x10325476
#define	F(X, Y, Z)   ((X & Y) | (~X & Z))
#define	G(X, Y, Z)   ((X & Z) | (Y & ~Z))
#define	H(X, Y, Z)   (X ^ Y ^ Z)
#define	I(X, Y, Z)   (Y ^ (X | ~Z))
#define	GF_MD5_DIGEST_SIZE   16

Functions
static void	md5Step (u32 *buffer, u32 *input)
u32	rotateLeft (u32 x, u32 n)
void	md5Init (MD5Context *ctx)
void	md5Update (MD5Context *ctx, u8 *input_buffer, size_t input_len)
void	md5Finalize (MD5Context *ctx)
GF_EXPORT void	gf_md5_csum (const void *data, u32 len, u8 output[GF_MD5_DIGEST_SIZE])

Variables
static u32	S []
static u32	K []
static u8	PADDING []

---

Data Structure Documentation

MD5Context

struct MD5Context

Data Fields
u64	size
u32	buffer[4]
u8	input[64]
u8	digest[16]

Macro Definition Documentation

A

#define A   0x67452301

B

#define B   0xefcdab89

C

#define C   0x98badcfe

D

#define D   0x10325476

F

#define F	(		X,
			Y,
			Z
	)		((X & Y) | (~X & Z))

G

#define G	(		X,
			Y,
			Z
	)		((X & Z) | (Y & ~Z))

H

#define H	(		X,
			Y,
			Z
	)		(X ^ Y ^ Z)

I

#define I	(		X,
			Y,
			Z
	)		(Y ^ (X | ~Z))

GF_MD5_DIGEST_SIZE

#define GF_MD5_DIGEST_SIZE   16

Function Documentation

md5Step()

static void md5Step ( u32 *  buffer, u32 *  input  )

static

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rotateLeft()

u32 rotateLeft	(	u32	x,
		u32	n
	)

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md5Init()

void md5Init

(

MD5Context *

ctx

)

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md5Update()

void md5Update	(	MD5Context *	ctx,
		u8 *	input_buffer,
		size_t	input_len
	)

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md5Finalize()

void md5Finalize

(

MD5Context *

ctx

)

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gf_md5_csum()

GF_EXPORT void gf_md5_csum	(	const void *	buf,
		u32	buflen,
		u8	digest[GF_MD5_DIGEST_SIZE]
	)

gets MD5 of input buffer

Parameters

buf	input buffer to hash
buflen	size of input buffer in bytes
digest	buffer to store message digest

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Variable Documentation

S

u32 S[]

static

Initial value:

= {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
                       5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20,
                       4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
                       6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21}

K

u32 K[]

static

Initial value:

= {0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
                       0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
                       0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
                       0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
                       0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
                       0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
                       0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
                       0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
                       0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
                       0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
                       0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
                       0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
                       0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
                       0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
                       0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
                       0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391}

PADDING

u8 PADDING[]

static

Initial value:

= {0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}