C++ (Cpp) secp256k1_context_randomize Examples

Example #1

File: ecc_libsecp256k1.c Project: ifzz/libbtc

void ecc_start(void)
{
    secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
    assert(secp256k1_ctx != NULL);

    uint8_t seed[32];
    random_bytes(seed, 32, 0);
    int ret = secp256k1_context_randomize(secp256k1_ctx, seed);
    assert(ret);
}

Example #2

File: org_commercium_NativeSecp256k1.c Project: CommerciumBlockchain/Commercium_Deprecated

SECP256K1_API jint JNICALL Java_org_commercium_NativeSecp256k1_secp256k1_1context_1randomize
  (JNIEnv* env, jclass classObject, jobject byteBufferObject, jlong ctx_l)
{
  secp256k1_context *ctx = (secp256k1_context*)(uintptr_t)ctx_l;

  const unsigned char* seed = (unsigned char*) (*env)->GetDirectBufferAddress(env, byteBufferObject);

  (void)classObject;

  return secp256k1_context_randomize(ctx, seed);

}

Example #3

File: key.c Project: Artogn/picocoin

secp256k1_context *get_secp256k1_context()
{
	if (!s_context) {
		secp256k1_context *ctx = secp256k1_context_create(
			SECP256K1_CONTEXT_VERIFY | SECP256K1_CONTEXT_SIGN);

		if (!ctx) {
			return NULL;
		}

		uint8_t seed[32];
		if (!RAND_bytes(seed, sizeof(seed)) ||
		    !secp256k1_context_randomize(ctx, seed)) {
			secp256k1_context_destroy(ctx);
			return NULL;
		}

		s_context = ctx;
	}

	return s_context;
}