chromium/net/third_party/quiche/src/quiche/quic/core/crypto/aes_256_gcm_decrypter_test.cc

// Copyright (c) 2017 The Chromium 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 "quiche/quic/core/crypto/aes_256_gcm_decrypter.h"

#include <memory>
#include <string>

#include "absl/base/macros.h"
#include "absl/strings/escaping.h"
#include "absl/strings/string_view.h"
#include "quiche/quic/core/quic_utils.h"
#include "quiche/quic/platform/api/quic_test.h"
#include "quiche/quic/test_tools/quic_test_utils.h"
#include "quiche/common/test_tools/quiche_test_utils.h"

namespace {

// The AES GCM test vectors come from the file gcmDecrypt256.rsp
// downloaded from
// https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/CAVP-TESTING-BLOCK-CIPHER-MODES#GCMVS
// on 2017-09-27. The test vectors in that file look like this:
//
// [Keylen = 256]
// [IVlen = 96]
// [PTlen = 0]
// [AADlen = 0]
// [Taglen = 128]
//
// Count = 0
// Key = f5a2b27c74355872eb3ef6c5feafaa740e6ae990d9d48c3bd9bb8235e589f010
// IV = 58d2240f580a31c1d24948e9
// CT =
// AAD =
// Tag = 15e051a5e4a5f5da6cea92e2ebee5bac
// PT =
//
// Count = 1
// Key = e5a8123f2e2e007d4e379ba114a2fb66e6613f57c72d4e4f024964053028a831
// IV = 51e43385bf533e168427e1ad
// CT =
// AAD =
// Tag = 38fe845c66e66bdd884c2aecafd280e6
// FAIL
//
// ...
//
// The gcmDecrypt256.rsp file is huge (3.0 MB), so a few test vectors were
// selected for this unit test.

// Describes a group of test vectors that all have a given key length, IV
// length, plaintext length, AAD length, and tag length.
struct TestGroupInfo { … };

// Each test vector consists of six strings of lowercase hexadecimal digits.
// The strings may be empty (zero length). A test vector with a nullptr |key|
// marks the end of an array of test vectors.
struct TestVector { … };

const TestGroupInfo test_group_info[] = …;

const TestVector test_group_0[] = …;

const TestVector test_group_1[] = …;

const TestVector test_group_2[] = …;

const TestVector test_group_3[] = …;

const TestVector test_group_4[] = …;

const TestVector test_group_5[] = …;

const TestVector* const test_group_array[] = …;

}  // namespace

namespace quic {
namespace test {

// DecryptWithNonce wraps the |Decrypt| method of |decrypter| to allow passing
// in an nonce and also to allocate the buffer needed for the plaintext.
QuicData* DecryptWithNonce(Aes256GcmDecrypter* decrypter,
                           absl::string_view nonce,
                           absl::string_view associated_data,
                           absl::string_view ciphertext) { … }

class Aes256GcmDecrypterTest : public QuicTest { … };

TEST_F(Aes256GcmDecrypterTest, Decrypt) { … }

TEST_F(Aes256GcmDecrypterTest, GenerateHeaderProtectionMask) { … }

}  // namespace test
}  // namespace quic