siphash_reference.c File Reference

#include "siphash.h"
#include <assert.h>
#include <stddef.h>
#include <stdint.h>

Include dependency graph for siphash_reference.c:

Go to the source code of this file.

Macros
#define	cROUNDS   2
#define	dROUNDS   4
#define	ROTL(x, b)   (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
#define	U32TO8_LE(p, v)
#define	U64TO8_LE(p, v)
#define	U8TO64_LE(p)
#define	SIPROUND
#define	TRACE

Functions
void	siphash_reference (const void *in, const size_t inlen, const void *k, uint8_t *out, const size_t outlen)
	Calculates SIPHASH using the reference implementation.

Macro Definition Documentation

cROUNDS

#define cROUNDS   2

Definition at line 36 of file siphash_reference.c.

dROUNDS

#define dROUNDS   4

Definition at line 39 of file siphash_reference.c.

ROTL

#define ROTL	(		x,
			b
	)		(uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))

Definition at line 42 of file siphash_reference.c.

SIPROUND

#define SIPROUND

Value:

    do                     \
    {                      \
        v0 += v1;          \
        v1 = ROTL(v1, 13); \
        v1 ^= v0;          \
        v0 = ROTL(v0, 32); \
        v2 += v3;          \
        v3 = ROTL(v3, 16); \
        v3 ^= v2;          \
        v0 += v3;          \
        v3 = ROTL(v3, 21); \
        v3 ^= v0;          \
        v2 += v1;          \
        v1 = ROTL(v1, 17); \
        v1 ^= v2;          \
        v2 = ROTL(v2, 32); \
    } while (0)

Definition at line 60 of file siphash_reference.c.

TRACE

#define TRACE

Definition at line 91 of file siphash_reference.c.

U32TO8_LE

#define U32TO8_LE	(		p,
			v
	)

Value:

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

Definition at line 44 of file siphash_reference.c.

U64TO8_LE

#define U64TO8_LE	(		p,
			v
	)

Value:

    U32TO8_LE((p), (uint32_t)((v))); \
    U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));

Definition at line 50 of file siphash_reference.c.

U8TO64_LE

#define U8TO64_LE

(

p

)

Value:

    (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8)          \
     | ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) \
     | ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) \
     | ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))

Definition at line 54 of file siphash_reference.c.

Function Documentation

siphash_reference()

void siphash_reference	(	const void *	in,
		const size_t	inlen,
		const void *	k,
		uint8_t *	out,
		const size_t	outlen
	)

Calculates SIPHASH using the reference implementation.

Definition at line 103 of file siphash_reference.c.

References cROUNDS, dROUNDS, SIPROUND, TRACE, U64TO8_LE, and U8TO64_LE.

Referenced by siphash(), test_siphash(), and test_siphash_openssl().