siphash.c File Reference

#include <string.h>
#include <stdio.h>
#include "siphash.h"

Go to the source code of this file.

Defines
#define	lo   u32[0]
#define	hi   u32[1]
#define	UNALIGNED_WORD_ACCESS   0
#define	U8TO32_LE(p)
#define	U32TO8_LE(p, v)
#define	U8TO64_LE(p)   u8to64_le(p)
#define	U64TO8_LE(p, v)   u64to8_le(p, v)
#define	ROTL64_TO(v, s)
#define	ADD64_TO(v, s)   add64_to(&(v), (s))
#define	XOR64_TO(v, s)   xor64_to(&(v), (s))
#define	XOR64_INT(v, x)   ((v).lo ^= (x))
#define	sip_init_state   sip_init_state_bin.u64
#define	SIP_COMPRESS(v0, v1, v2, v3)
#define	SIP_2_ROUND(m, v0, v1, v2, v3)
#define	OR_BYTE(n)
Functions
static uint64_t	u8to64_le (const uint8_t *p)
static void	u64to8_le (uint8_t *p, uint64_t v)
static uint64_t *	rotl64_to (uint64_t *v, unsigned int s)
static uint64_t *	rotl64_swap (uint64_t *v)
static uint64_t *	add64_to (uint64_t *v, const uint64_t s)
static uint64_t *	xor64_to (uint64_t *v, const uint64_t s)
uint64_t	sip_hash24 (const uint8_t key[16], const uint8_t *data, size_t len)
Variables
union {
char   bin [32]
uint64_t   u64 [4]
}	sip_init_state_bin

---

Define Documentation

#define ADD64_TO	(	v,
		s		)	add64_to(&(v), (s))

Definition at line 111 of file siphash.c.

#define hi   u32[1]

Definition at line 22 of file siphash.c.

Referenced by assign_heap_slot(), and is_pointer_to_heap().

#define lo   u32[0]

Definition at line 21 of file siphash.c.

Referenced by assign_heap_slot(), big2dbl(), and is_pointer_to_heap().

#define OR_BYTE

(

n

)

Value:

do { \
        if (n >= 4) \
            last.hi |= ((uint32_t) end[n]) << ((n) >= 4 ? (n) * 8 - 32 : 0); \
        else \
            last.lo |= ((uint32_t) end[n]) << ((n) >= 4 ? 0 : (n) * 8); \
    } while (0)

Referenced by sip_hash24().

#define ROTL64_TO	(	v,
		s		)

Value:

((s) > 32 ? rotl64_swap(rotl64_to(&(v), (s) - 32)) : \
                         (s) == 32 ? rotl64_swap(&(v)) : rotl64_to(&(v), (s)))

Definition at line 90 of file siphash.c.

#define SIP_2_ROUND	(	m,
		v0,
		v1,
		v2,
		v3		)

Value:

do {                                    \
    XOR64_TO((v3), (m));                \
    SIP_COMPRESS(v0, v1, v2, v3);       \
    SIP_COMPRESS(v0, v1, v2, v3);       \
    XOR64_TO((v0), (m));                \
} while (0)

Definition at line 388 of file siphash.c.

Referenced by sip_hash24().

#define SIP_COMPRESS	(	v0,
		v1,
		v2,
		v3		)

Value:

do {                                    \
    ADD64_TO((v0), (v1));               \
    ADD64_TO((v2), (v3));               \
    ROTL64_TO((v1), 13);                \
    ROTL64_TO((v3), 16);                \
    XOR64_TO((v1), (v0));               \
    XOR64_TO((v3), (v2));               \
    ROTL64_TO((v0), 32);                \
    ADD64_TO((v2), (v1));               \
    ADD64_TO((v0), (v3));               \
    ROTL64_TO((v1), 17);                \
    ROTL64_TO((v3), 21);                \
    XOR64_TO((v1), (v2));               \
    XOR64_TO((v3), (v0));               \
    ROTL64_TO((v2), 32);                \
} while(0)

Definition at line 157 of file siphash.c.

Referenced by sip_hash24().

#define sip_init_state   sip_init_state_bin.u64

Definition at line 137 of file siphash.c.

Referenced by sip_hash24().

#define U32TO8_LE	(	p,
		v		)

Value:

do {                                    \
    (p)[0] = (uint8_t)((v)      );      \
    (p)[1] = (uint8_t)((v) >>  8);      \
    (p)[2] = (uint8_t)((v) >> 16);      \
    (p)[3] = (uint8_t)((v) >> 24);      \
} while (0)

Definition at line 45 of file siphash.c.

Referenced by u64to8_le().

#define U64TO8_LE	(	p,
		v		)	u64to8_le(p, v)

Definition at line 82 of file siphash.c.

#define U8TO32_LE

(

p

)

Value:

(((uint32_t)((p)[0])       ) | ((uint32_t)((p)[1]) <<  8) |     \
     ((uint32_t)((p)[2]) <<  16) | ((uint32_t)((p)[3]) << 24))          \

Definition at line 41 of file siphash.c.

Referenced by u8to64_le().

#define U8TO64_LE

(

p

)

u8to64_le(p)

Definition at line 72 of file siphash.c.

Referenced by sip_hash24().

#define UNALIGNED_WORD_ACCESS   0

Definition at line 38 of file siphash.c.

#define XOR64_INT	(	v,
		x		)	((v).lo ^= (x))

Definition at line 130 of file siphash.c.

Referenced by sip_hash24().

#define XOR64_TO	(	v,
		s		)	xor64_to(&(v), (s))

Definition at line 121 of file siphash.c.

Referenced by sip_hash24().

---

Function Documentation

static uint64_t* add64_to	(	uint64_t *	v,
		const uint64_t	s
	)			[inline, static]

Definition at line 113 of file siphash.c.

static uint64_t* rotl64_swap

(

uint64_t *

v

)

[inline, static]

Definition at line 103 of file siphash.c.

static uint64_t* rotl64_to	(	uint64_t *	v,
		unsigned int	s
	)			[inline, static]

Definition at line 93 of file siphash.c.

uint64_t sip_hash24	(	const uint8_t	key[16],
		const uint8_t *	data,
		size_t	len
	)

Definition at line 397 of file siphash.c.

References last, OR_BYTE, SIP_2_ROUND, SIP_COMPRESS, sip_init_state, U8TO64_LE, uint64_t, XOR64_INT, and XOR64_TO.

static void u64to8_le	(	uint8_t *	p,
		uint64_t	v
	)			[inline, static]

Definition at line 84 of file siphash.c.

References U32TO8_LE.

static uint64_t u8to64_le

(

const uint8_t *

p

)

[inline, static]

Definition at line 74 of file siphash.c.

References U8TO32_LE, and uint64_t.

static uint64_t* xor64_to	(	uint64_t *	v,
		const uint64_t	s
	)			[inline, static]

Definition at line 123 of file siphash.c.

---

Variable Documentation

char bin[32]

Definition at line 134 of file siphash.c.

union { ... } sip_init_state_bin [static]

uint64_t u64[4]

Definition at line 135 of file siphash.c.