siphash.cpp File Reference

#include <crypto/siphash.h>

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

Functions
uint64_t	SipHashUint256 (uint64_t k0, uint64_t k1, const uint256 &val)
uint64_t	SipHashUint256Extra (uint64_t k0, uint64_t k1, const uint256 &val, uint32_t extra)

Macro Definition Documentation

ROTL

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

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)

Function Documentation

SipHashUint256()

uint64_t SipHashUint256	(	uint64_t	k0,
		uint64_t	k1,
		const uint256 &	val
	)

Optimized SipHash-2-4 implementation for uint256.

It is identical to: SipHasher(k0, k1) .Write(val.GetUint64(0)) .Write(val.GetUint64(1)) .Write(val.GetUint64(2)) .Write(val.GetUint64(3)) .Finalize()

SipHashUint256Extra()

uint64_t SipHashUint256Extra	(	uint64_t	k0,
		uint64_t	k1,
		const uint256 &	val,
		uint32_t	extra
	)