blob: ea58bbfbad558990dd18ffc8abd9124b2f7b73cd [file] [log] [blame]
// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include <vector>
#include <base/optional.h>
#include <crypto/scoped_openssl_types.h>
#include <openssl/x509.h>
#include "libhwsec/crypto_utility.h"
namespace {
// The wrapper of OpenSSL i2d series function. It takes a OpenSSL i2d function
// and apply to |object|.
// The wrapper will always accept the non-const pointer of the object since
// unique_ptr::get will only return the non-const version. It will break the
// type deduction of template.
template <typename OpenSSLType>
base::Optional<std::vector<uint8_t>> OpenSSLObjectToBytes(
int (*i2d_convert_function)(OpenSSLType*, unsigned char**),
typename std::remove_const<OpenSSLType>::type* object) {
if (object == nullptr) {
return base::nullopt;
unsigned char* openssl_buffer = nullptr;
int size = i2d_convert_function(object, &openssl_buffer);
if (size < 0) {
return base::nullopt;
crypto::ScopedOpenSSLBytes scoped_buffer(openssl_buffer);
return std::vector<uint8_t>(openssl_buffer, openssl_buffer + size);
} // namespace
namespace hwsec {
base::Optional<std::vector<uint8_t>> RsaKeyToSubjectPublicKeyInfoBytes(
const crypto::ScopedRSA& key) {
return OpenSSLObjectToBytes(i2d_RSA_PUBKEY, key.get());
base::Optional<std::vector<uint8_t>> EccKeyToSubjectPublicKeyInfoBytes(
const crypto::ScopedEC_KEY& key) {
return OpenSSLObjectToBytes(i2d_EC_PUBKEY, key.get());
} // namespace hwsec