C++ (Cpp) RAND_CTX_cleanup Examples

Example #1

File: rlwe_kex.c Project: DevCybran/rlwekex

void rlwe_kex_compute_key_bob(const uint32_t b[1024], const uint32_t s[1024], uint64_t c[16], uint64_t k[16], FFT_CTX *ctx) {
	uint32_t v[1024];
	uint32_t eprimeprime[1024];
	RAND_CTX rand_ctx;
	if (!RAND_CTX_init(&rand_ctx)) {
		fprintf(stderr, "Randomness allocation error.");
		return;
	}
#if CONSTANT_TIME
	sample_ct(eprimeprime, &rand_ctx);
#else
	sample(eprimeprime, &rand_ctx);
#endif
	key_gen(v, b, s, eprimeprime, ctx);
#if CONSTANT_TIME
	crossround2_ct(c, v, &rand_ctx`);
	round2_ct(k, v);
#else
	crossround2(c, v, &rand_ctx);
	round2(k, v);
#endif
	memset((char *) v, 0, 1024 * sizeof(uint32_t));
	memset((char *) eprimeprime, 0, 1024 * sizeof(uint32_t));
	RAND_CTX_cleanup(&rand_ctx);
}

Example #2

File: rlwe_kex.c Project: jjl/rlwekex

int rlwe_kex_compute_key_bob(const uint32_t b[1024], const uint32_t s[1024], uint64_t c[16], uint64_t k[16], FFT_CTX *ctx) {
	int ret;
	uint32_t v[1024];
	uint32_t eprimeprime[1024];
	RAND_CTX rand_ctx;
	ret = RAND_CTX_init(&rand_ctx);
	if (!ret) {
		return ret;
	}
#if CONSTANT_TIME
	rlwe_sample_ct(eprimeprime, &rand_ctx);
#else
	rlwe_sample(eprimeprime, &rand_ctx);
#endif
	rlwe_key_gen(v, b, s, eprimeprime, ctx);
#if CONSTANT_TIME
	rlwe_crossround2_ct(c, v, &rand_ctx);
	rlwe_round2_ct(k, v);
#else
	rlwe_crossround2(c, v, &rand_ctx);
	rlwe_round2(k, v);
#endif
	rlwe_memset_volatile(v, 0, 1024 * sizeof(uint32_t));
	rlwe_memset_volatile(eprimeprime, 0, 1024 * sizeof(uint32_t));
	RAND_CTX_cleanup(&rand_ctx);
	return ret;
}

Example #3

File: rlwe_kex.c Project: DevCybran/rlwekex

void rlwe_kex_generate_keypair(const uint32_t *a, uint32_t s[1024], uint32_t b[1024], FFT_CTX *ctx) {
	uint32_t e[1024];
	RAND_CTX rand_ctx;
	if (!RAND_CTX_init(&rand_ctx)) {
		fprintf(stderr, "Randomness allocation error.");
		return;
	}
#if CONSTANT_TIME
	sample_ct(s, &rand_ctx);
	sample_ct(e, &rand_ctx);
#else
	sample(s, &rand_ctx);
	sample(e, &rand_ctx);
#endif
	key_gen(b, a, s, e, ctx);
	memset((char *) e, 0, 1024 * sizeof(uint32_t));
	RAND_CTX_cleanup(&rand_ctx);
}

Example #4

File: rlwe_kex.c Project: jjl/rlwekex

int rlwe_kex_generate_keypair(const uint32_t *a, uint32_t s[1024], uint32_t b[1024], FFT_CTX *ctx) {
	int ret;
	uint32_t e[1024];
	RAND_CTX rand_ctx;
	ret = RAND_CTX_init(&rand_ctx);
	if (!ret) {
		return ret;
	}
#if CONSTANT_TIME
	rlwe_sample_ct(s, &rand_ctx);
	rlwe_sample_ct(e, &rand_ctx);
#else
	rlwe_sample(s, &rand_ctx);
	rlwe_sample(e, &rand_ctx);
#endif
	rlwe_key_gen(b, a, s, e, ctx);
	rlwe_memset_volatile(e, 0, 1024 * sizeof(uint32_t));
	RAND_CTX_cleanup(&rand_ctx);
	return ret;
}