chromium/third_party/openscreen/src/util/crypto/rsa_private_key_unittest.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "util/crypto/rsa_private_key.h"

#include <stdint.h>

#include <cstring>
#include <memory>
#include <utility>

#include "gtest/gtest.h"
#include "platform/base/error.h"

namespace openscreen {
namespace {

const uint8_t kTestPrivateKeyInfo[] = …;

}  // namespace

// Generate random private keys with two different sizes. Reimport, then
// export them again. We should get back the same exact bytes.
TEST(RSAPrivateKeyUnitTest, InitRandomTest) { … }

// Test Copy() method.
TEST(RSAPrivateKeyUnitTest, CopyTest) { … }

// Test that CreateFromPrivateKeyInfo fails if there is extra data after the RSA
// key.
TEST(RSAPrivateKeyUnitTest, ExtraData) { … }

TEST(RSAPrivateKeyUnitTest, NotRsaKey) { … }

// Verify that generated public keys look good. This test data was generated
// with the openssl command line tool.
TEST(RSAPrivateKeyUnitTest, PublicKeyTest) { … }

// These two test keys each contain an integer that has 0x00 for its most
// significant byte. When encoded as ASN.1, this byte is dropped and there are
// two interesting sub-cases. When the sign bit of the integer is set, an extra
// null byte is added back to force the encoded value to be positive. When the
// sign bit is not set, the encoded integer is just left shorter than usual.
// See also: http://code.google.com/p/chromium/issues/detail?id=14877.
//
// Before we were handling this correctly, we would see one of two failures:
// * RSAPrivateKey::CreateFromPrivateKeyInfo would return null because the
//   underlying windows API failed to import the key.
// * The import would succeed, but incorrectly interpret the data. On export,
//   the key would contain different values.
//
// This test case verifies these two failures modes don't occur.
TEST(RSAPrivateKeyUnitTest, ShortIntegers) { … }

TEST(RSAPrivateKeyUnitTest, CreateFromKeyTest) { … }
}  // namespace openscreen