C++ (Cpp) SIPHASH示例

示例#1

文件： apr_siphash.c 项目： MiKTeX/miktex

APU_DECLARE(apr_uint64_t) apr_siphash48(const void *src, apr_size_t len,
                               const unsigned char key[APR_SIPHASH_KSIZE])
{
    apr_uint64_t h;

#undef  cROUNDS
#define cROUNDS \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND();

#undef  dROUNDS
#define dROUNDS \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND(); \
        SIPROUND();

    SIPHASH(h, src, len, key);
    return h;
}

示例#2

文件： Floating.c 项目： shurizzle/beard

uint64_t
Floating_hash (Floating* self)
{
	if (CACHE(self)->hash) {
		return CACHE(self)->hash;
	}

	mpfr_exp_t exp;
	char*      string = mpfr_get_str(NULL, &exp, 32, 0, *self->value, MPFR_RNDN);
	size_t     size   = strlen(string);

	CACHE(self)->hash = SIPHASH(RUNTIME_FOR(self), string, size + 1) ^ ((VALUE_TYPE_FLOATING << 4) ^ exp);

	return CACHE(self)->hash;
}

示例#3

文件： apr_siphash.c 项目： MiKTeX/miktex

APU_DECLARE(apr_uint64_t) apr_siphash(const void *src, apr_size_t len,
                              const unsigned char key[APR_SIPHASH_KSIZE],
                                      unsigned int c, unsigned int d)
{
    apr_uint64_t h;
    unsigned int i;

#undef  cROUNDS
#define cROUNDS \
        for (i = 0; i < c; ++i) { \
            SIPROUND(); \
        }

#undef  dROUNDS
#define dROUNDS \
        for (i = 0; i < d; ++i) { \
            SIPROUND(); \
        }

    SIPHASH(h, src, len, key);
    return h;
}