C++ (Cpp) openssl_rand_clean示例

示例#1

文件： OpenSslCryptoRandomNative.c 项目： InsightsDev/commons-crypto

/**
 * If using an Intel chipset with RDRAND, the high-performance hardware
 * random number generator will be used.
 */
static ENGINE * openssl_rand_init(void)
{
  locks_setup();

  dlsym_ENGINE_load_rdrand();
  ENGINE *eng = dlsym_ENGINE_by_id("rdrand");

  int ret = -1;
  do {
    if (NULL == eng) {
      break;
    }

    int rc = dlsym_ENGINE_init(eng);
    if (0 == rc) {
      break;
    }

    rc = dlsym_ENGINE_set_default(eng, ENGINE_METHOD_RAND);
    if (0 == rc) {
      break;
    }

    ret = 0;
  } while(0);

  if (ret == -1) {
    openssl_rand_clean(eng, 0);
  }

  return eng;
}

示例#2

文件： OpenSslCryptoRandomNative.c 项目： apache/commons-crypto

/**
 * If using an Intel chipset with RDRAND, the high-performance hardware
 * random number generator will be used.
 */
static ENGINE * openssl_rand_init(JNIEnv *env)
{
  if (dlsym_OpenSSL_version_num() < VERSION_1_1_X) {
    locks_setup(env);
    static void (*dlsym_ENGINE_load_rdrand) (void);
    dlsym_ENGINE_load_rdrand = do_dlsym(env, openssl, "ENGINE_load_rdrand");
    dlsym_ENGINE_load_rdrand();
  }

  ENGINE *eng = dlsym_ENGINE_by_id("rdrand");

  int ret = -1;
  do {
    if (NULL == eng) {
      break;
    }

    int rc = dlsym_ENGINE_init(eng);
    if (0 == rc) {
      break;
    }

    rc = dlsym_ENGINE_set_default(eng, ENGINE_METHOD_RAND);
    if (0 == rc) {
      break;
    }

    ret = 0;
  } while(0);

  if (ret == -1) {
    openssl_rand_clean(env, eng, 0);
  }

  return eng;
}