C++ (Cpp) ECDSA_SIG_max_len Beispiele

Beispiel #1

Datei: ecdsa_asn1.c Projekt: ThomasWo/proto-quic

size_t ECDSA_size(const EC_KEY *key) {
  if (key == NULL) {
    return 0;
  }

  size_t group_order_size;
  if (key->ecdsa_meth && key->ecdsa_meth->group_order_size) {
    group_order_size = key->ecdsa_meth->group_order_size(key);
  } else {
    const EC_GROUP *group = EC_KEY_get0_group(key);
    if (group == NULL) {
      return 0;
    }

    group_order_size = BN_num_bytes(EC_GROUP_get0_order(group));
  }

  return ECDSA_SIG_max_len(group_order_size);
}

Beispiel #2

Datei: ecdsa_asn1.c Projekt: tempbottle/ring

size_t ECDSA_size(const EC_KEY *key) {
  if (key == NULL) {
    return 0;
  }

  const EC_GROUP *group = EC_KEY_get0_group(key);
  if (group == NULL) {
    return 0;
  }

  BIGNUM *order = BN_new();
  if (order == NULL) {
    return 0;
  }
  if (!EC_GROUP_get_order(group, order, NULL)) {
    BN_clear_free(order);
    return 0;
  }

  size_t group_order_size = BN_num_bytes(order);
  BN_clear_free(order);

  return ECDSA_SIG_max_len(group_order_size);
}