| // Copyright (c) 2013 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 "quic/core/crypto/crypto_secret_boxer.h" |
| |
| #include <string> |
| |
| #include "absl/strings/string_view.h" |
| #include "quic/core/crypto/quic_random.h" |
| #include "quic/platform/api/quic_test.h" |
| |
| namespace quic { |
| namespace test { |
| |
| class CryptoSecretBoxerTest : public QuicTest {}; |
| |
| TEST_F(CryptoSecretBoxerTest, BoxAndUnbox) { |
| absl::string_view message("hello world"); |
| |
| CryptoSecretBoxer boxer; |
| boxer.SetKeys({std::string(CryptoSecretBoxer::GetKeySize(), 0x11)}); |
| |
| const std::string box = boxer.Box(QuicRandom::GetInstance(), message); |
| |
| std::string storage; |
| absl::string_view result; |
| EXPECT_TRUE(boxer.Unbox(box, &storage, &result)); |
| EXPECT_EQ(result, message); |
| |
| EXPECT_FALSE(boxer.Unbox(std::string(1, 'X') + box, &storage, &result)); |
| EXPECT_FALSE( |
| boxer.Unbox(box.substr(1, std::string::npos), &storage, &result)); |
| EXPECT_FALSE(boxer.Unbox(std::string(), &storage, &result)); |
| EXPECT_FALSE(boxer.Unbox( |
| std::string(1, box[0] ^ 0x80) + box.substr(1, std::string::npos), |
| &storage, &result)); |
| } |
| |
| // Helper function to test whether one boxer can decode the output of another. |
| static bool CanDecode(const CryptoSecretBoxer& decoder, |
| const CryptoSecretBoxer& encoder) { |
| absl::string_view message("hello world"); |
| const std::string boxed = encoder.Box(QuicRandom::GetInstance(), message); |
| std::string storage; |
| absl::string_view result; |
| bool ok = decoder.Unbox(boxed, &storage, &result); |
| if (ok) { |
| EXPECT_EQ(result, message); |
| } |
| return ok; |
| } |
| |
| TEST_F(CryptoSecretBoxerTest, MultipleKeys) { |
| std::string key_11(CryptoSecretBoxer::GetKeySize(), 0x11); |
| std::string key_12(CryptoSecretBoxer::GetKeySize(), 0x12); |
| |
| CryptoSecretBoxer boxer_11, boxer_12, boxer; |
| EXPECT_TRUE(boxer_11.SetKeys({key_11})); |
| EXPECT_TRUE(boxer_12.SetKeys({key_12})); |
| EXPECT_TRUE(boxer.SetKeys({key_12, key_11})); |
| |
| // Neither single-key boxer can decode the other's tokens. |
| EXPECT_FALSE(CanDecode(boxer_11, boxer_12)); |
| EXPECT_FALSE(CanDecode(boxer_12, boxer_11)); |
| |
| // |boxer| encodes with the first key, which is key_12. |
| EXPECT_TRUE(CanDecode(boxer_12, boxer)); |
| EXPECT_FALSE(CanDecode(boxer_11, boxer)); |
| |
| // The boxer with both keys can decode tokens from either single-key boxer. |
| EXPECT_TRUE(CanDecode(boxer, boxer_11)); |
| EXPECT_TRUE(CanDecode(boxer, boxer_12)); |
| |
| // After we flush key_11 from |boxer|, it can no longer decode tokens from |
| // |boxer_11|. |
| EXPECT_TRUE(boxer.SetKeys({key_12})); |
| EXPECT_FALSE(CanDecode(boxer, boxer_11)); |
| } |
| |
| } // namespace test |
| } // namespace quic |