ripemd.c File Reference

#include <string.h>
#include "attributes.h"
#include "avutil.h"
#include "bswap.h"
#include "intreadwrite.h"
#include "ripemd.h"
#include "mem.h"

Go to the source code of this file.

Data Structures
struct	AVRIPEMD
	hash context More...

Macros
#define	rol(value, bits)   ((value << bits) | (value >> (32 - bits)))
#define	SWAP(a, b)   if (ext) { t = a; a = b; b = t; }
#define	ROUND128_0_TO_15(a, b, c, d, e, f, g, h)
#define	ROUND128_16_TO_31(a, b, c, d, e, f, g, h)
#define	ROUND128_32_TO_47(a, b, c, d, e, f, g, h)
#define	ROUND128_48_TO_63(a, b, c, d, e, f, g, h)
#define	R128_0
#define	R128_16
#define	R128_32
#define	R128_48
#define	ROTATE(x, y)
#define	ROUND160_0_TO_15(a, b, c, d, e, f, g, h, i, j)
#define	ROUND160_16_TO_31(a, b, c, d, e, f, g, h, i, j)
#define	ROUND160_32_TO_47(a, b, c, d, e, f, g, h, i, j)
#define	ROUND160_48_TO_63(a, b, c, d, e, f, g, h, i, j)
#define	ROUND160_64_TO_79(a, b, c, d, e, f, g, h, i, j)
#define	R160_0
#define	R160_16
#define	R160_32
#define	R160_48
#define	R160_64

Functions
struct AVRIPEMD *	av_ripemd_alloc (void)
	Allocate an AVRIPEMD context.
static void	ripemd128_transform (uint32_t *state, const uint8_t buffer[64], int ext)
static void	ripemd160_transform (uint32_t *state, const uint8_t buffer[64], int ext)
av_cold int	av_ripemd_init (AVRIPEMD *ctx, int bits)
	Initialize RIPEMD hashing.
void	av_ripemd_update (AVRIPEMD *ctx, const uint8_t *data, unsigned int len)
	Update hash value.
void	av_ripemd_final (AVRIPEMD *ctx, uint8_t *digest)
	Finish hashing and output digest value.

Variables
const int	av_ripemd_size = sizeof(AVRIPEMD)
static const uint32_t	KA [4]
static const uint32_t	KB [4]
static const int	ROTA [80]
static const int	ROTB [80]
static const int	WA [80]
static const int	WB [80]

Macro Definition Documentation

#define rol	(		value,
			bits
	)		((value << bits) | (value >> (32 - bits)))

Definition at line 89 of file ripemd.c.

#define SWAP	(		a,
			b
	)		if (ext) { t = a; a = b; b = t; }

Definition at line 91 of file ripemd.c.

Referenced by ripemd128_transform(), and ripemd160_transform().

#define ROUND128_0_TO_15	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h
	)

Value:

a = rol(a + ((  b ^ c  ^ d)      + block[WA[n]]),         ROTA[n]); \
    e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \
    n++

Definition at line 93 of file ripemd.c.

Referenced by ripemd128_transform().

#define ROUND128_16_TO_31	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h
	)

Value:

a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \
    e = rol(e + (((~g | f) ^ h)      + block[WB[n]] + KB[1]), ROTB[n]); \
    n++

Definition at line 98 of file ripemd.c.

Referenced by ripemd128_transform().

#define ROUND128_32_TO_47	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h
	)

Value:

a = rol(a + (((~c | b) ^ d)      + block[WA[n]] + KA[1]), ROTA[n]); \
    e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \
    n++

Definition at line 103 of file ripemd.c.

Referenced by ripemd128_transform().

#define ROUND128_48_TO_63	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h
	)

Value:

a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \
    e = rol(e + ((  f ^ g  ^ h)      + block[WB[n]]),         ROTB[n]); \
    n++

Definition at line 108 of file ripemd.c.

Referenced by ripemd128_transform().

#define R128_0

Value:

ROUND128_0_TO_15(a,b,c,d,e,f,g,h); \
    ROUND128_0_TO_15(d,a,b,c,h,e,f,g); \
    ROUND128_0_TO_15(c,d,a,b,g,h,e,f); \
    ROUND128_0_TO_15(b,c,d,a,f,g,h,e)

Referenced by ripemd128_transform().

#define R128_16

Value:

ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \
    ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \
    ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \
    ROUND128_16_TO_31(b,c,d,a,f,g,h,e)

Referenced by ripemd128_transform().

#define R128_32

Value:

ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \
    ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \
    ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \
    ROUND128_32_TO_47(b,c,d,a,f,g,h,e)

Referenced by ripemd128_transform().

#define R128_48

Value:

ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \
    ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \
    ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \
    ROUND128_48_TO_63(b,c,d,a,f,g,h,e)

Referenced by ripemd128_transform().

#define ROTATE	(		x,
			y
	)

Value:

x = rol(x, 10); \
    y = rol(y, 10); \
    n++

Definition at line 212 of file ripemd.c.

#define ROUND160_0_TO_15	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			j
	)

Value:

a = rol(a + ((  b ^ c  ^ d)      + block[WA[n]]),         ROTA[n]) + e; \
    f = rol(f + (((~i | h) ^ g)      + block[WB[n]] + KB[0]), ROTB[n]) + j; \
    ROTATE(c,h)

Definition at line 217 of file ripemd.c.

Referenced by ripemd160_transform().

#define ROUND160_16_TO_31	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			j
	)

Value:

a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \
    f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \
    ROTATE(c,h)

Definition at line 222 of file ripemd.c.

Referenced by ripemd160_transform().

#define ROUND160_32_TO_47	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			j
	)

Value:

a = rol(a + (((~c | b) ^ d)      + block[WA[n]] + KA[1]), ROTA[n]) + e; \
    f = rol(f + (((~h | g) ^ i)      + block[WB[n]] + KB[2]), ROTB[n]) + j; \
    ROTATE(c,h)

Definition at line 227 of file ripemd.c.

Referenced by ripemd160_transform().

#define ROUND160_48_TO_63	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			j
	)

Value:

a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \
    f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \
    ROTATE(c,h)

Definition at line 232 of file ripemd.c.

Referenced by ripemd160_transform().

#define ROUND160_64_TO_79	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			j
	)

Value:

a = rol(a + (((~d | c) ^ b)      + block[WA[n]] + KA[3]), ROTA[n]) + e; \
    f = rol(f + ((  g ^ h  ^ i)      + block[WB[n]]),         ROTB[n]) + j; \
    ROTATE(c,h)

Definition at line 237 of file ripemd.c.

Referenced by ripemd160_transform().

#define R160_0

Value:

ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); \
    ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i); \
    ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h); \
    ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g); \
    ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f)

Referenced by ripemd160_transform().

#define R160_16

Value:

ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \
    ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \
    ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \
    ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \
    ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j)

Referenced by ripemd160_transform().

#define R160_32

Value:

ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \
    ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \
    ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \
    ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \
    ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i)

Referenced by ripemd160_transform().

#define R160_48

Value:

ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \
    ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \
    ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \
    ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \
    ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h)

Referenced by ripemd160_transform().

#define R160_64

Value:

ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \
    ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \
    ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \
    ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \
    ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g)

Referenced by ripemd160_transform().

Function Documentation

static void ripemd128_transform ( uint32_t *  state, const uint8_t  buffer[64], int  ext  )

static

Definition at line 113 of file ripemd.c.

Referenced by av_ripemd_init().

static void ripemd160_transform ( uint32_t *  state, const uint8_t  buffer[64], int  ext  )

static

Definition at line 242 of file ripemd.c.

Referenced by av_ripemd_init().

Variable Documentation

const uint32_t KA[4]

static

Initial value:

= {
    0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e
}

Definition at line 49 of file ripemd.c.

const uint32_t KB[4]

static

Initial value:

= {
    0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9
}

Definition at line 53 of file ripemd.c.

const int ROTA[80]

static

Initial value:

= {
    11, 14, 15, 12,  5,  8,  7 , 9, 11, 13, 14, 15,  6,  7,  9,  8,
     7 , 6,  8, 13, 11,  9,  7, 15,  7, 12, 15,  9, 11,  7, 13, 12,
    11, 13,  6,  7, 14,  9, 13, 15, 14,  8, 13,  6,  5, 12,  7,  5,
    11, 12, 14, 15, 14, 15,  9,  8,  9, 14,  5,  6,  8,  6,  5, 12,
     9, 15,  5, 11,  6,  8, 13, 12,  5, 12, 13, 14, 11,  8,  5,  6
}

Definition at line 57 of file ripemd.c.

const int ROTB[80]

static

Initial value:

= {
     8,  9,  9, 11, 13, 15, 15,  5,  7,  7,  8, 11, 14, 14, 12,  6,
     9, 13, 15,  7, 12,  8,  9, 11,  7,  7, 12,  7,  6, 15, 13, 11,
     9,  7, 15, 11,  8,  6,  6, 14, 12, 13,  5, 14, 13, 13,  7,  5,
    15,  5,  8, 11, 14, 14,  6, 14,  6,  9, 12,  9, 12,  5, 15,  8,
     8,  5, 12,  9, 12,  5, 14,  6,  8, 13,  6,  5, 15, 13, 11, 11
}

Definition at line 65 of file ripemd.c.

const int WA[80]

static

Initial value:

= {
     0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
     7,  4, 13,  1, 10,  6, 15,  3, 12,  0,  9,  5,  2, 14, 11,  8,
     3, 10, 14,  4,  9, 15,  8,  1,  2,  7,  0,  6, 13, 11,  5, 12,
     1,  9, 11, 10,  0,  8, 12,  4, 13,  3,  7, 15, 14,  5,  6,  2,
     4,  0,  5,  9,  7, 12,  2, 10, 14,  1,  3,  8, 11,  6, 15, 13
}

Definition at line 73 of file ripemd.c.

const int WB[80]

static

Initial value:

= {
     5, 14,  7,  0,  9,  2, 11,  4, 13,  6, 15,  8,  1, 10,  3, 12,
     6, 11,  3,  7,  0, 13,  5, 10, 14, 15,  8, 12,  4,  9,  1,  2,
    15,  5,  1,  3,  7, 14,  6,  9, 11,  8, 12,  2, 10,  0,  4, 13,
     8,  6,  4,  1,  3, 11, 15,  0,  5, 12,  2, 13,  9,  7, 10, 14,
    12, 15, 10,  4,  1,  5,  8,  7,  6,  2, 13, 14,  0,  3,  9, 11
}

Definition at line 81 of file ripemd.c.