1//
2// Copyright (C) 2012 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#include "shill/crypto_des_cbc.h"
18
19#include <string>
20
21#include <base/files/file_util.h>
22#include <base/files/scoped_temp_dir.h>
23#include <gtest/gtest.h>
24
25using base::FilePath;
26using std::string;
27using std::vector;
28using testing::Test;
29
30namespace shill {
31
32namespace {
33const char kTestKey[] = "12345678";
34const char kTestIV[] = "abcdefgh";
35const char kEmptyPlain[] = "";
36const char kEmptyCipher[] = "02:4+O1a2KJVRM=";
37const char kEmptyCipherNoSentinel[] = "02:lNRDa8O1tpM=";
38const char kPlainText[] = "Hello world! ~123";
39const char kCipherText[] = "02:MbxzeBqK3HVeS3xfjyhbe47Xx+szYgOp";
40const char kPlainVersion1[] = "This is a test!";
41const char kCipherVersion1[] = "bKlHDISdHMFfmfgBTT5I0w==";
42}  // namespace
43
44class CryptoDESCBCTest : public Test {
45 public:
46  CryptoDESCBCTest() {}
47
48 protected:
49  CryptoDESCBC crypto_;
50};
51
52TEST_F(CryptoDESCBCTest, GetID) {
53  EXPECT_EQ(CryptoDESCBC::kID, crypto_.GetID());
54}
55
56TEST_F(CryptoDESCBCTest, LoadKeyMatter) {
57  base::ScopedTempDir temp_dir;
58  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
59  const char kKeyMatterFile[] = "key-matter-file";
60  FilePath key_matter = temp_dir.path().Append(kKeyMatterFile);
61
62  EXPECT_FALSE(crypto_.LoadKeyMatter(key_matter));
63  EXPECT_TRUE(crypto_.key().empty());
64  EXPECT_TRUE(crypto_.iv().empty());
65
66  string matter = string(kTestIV) + kTestKey;
67
68  base::WriteFile(key_matter, matter.data(), matter.size() - 1);
69  EXPECT_FALSE(crypto_.LoadKeyMatter(key_matter));
70  EXPECT_TRUE(crypto_.key().empty());
71  EXPECT_TRUE(crypto_.iv().empty());
72
73  base::WriteFile(key_matter, matter.data(), matter.size());
74  EXPECT_TRUE(crypto_.LoadKeyMatter(key_matter));
75  EXPECT_EQ(kTestKey, string(crypto_.key().begin(), crypto_.key().end()));
76  EXPECT_EQ(kTestIV, string(crypto_.iv().begin(), crypto_.iv().end()));
77
78  const char kKey2[] = "ABCDEFGH";
79  const char kIV2[] = "87654321";
80  matter = string("X") + kIV2 + kKey2;
81
82  base::WriteFile(key_matter, matter.data(), matter.size());
83  EXPECT_TRUE(crypto_.LoadKeyMatter(key_matter));
84  EXPECT_EQ(kKey2, string(crypto_.key().begin(), crypto_.key().end()));
85  EXPECT_EQ(kIV2, string(crypto_.iv().begin(), crypto_.iv().end()));
86
87  base::WriteFile(key_matter, " ", 1);
88  EXPECT_FALSE(crypto_.LoadKeyMatter(key_matter));
89  EXPECT_TRUE(crypto_.key().empty());
90  EXPECT_TRUE(crypto_.iv().empty());
91}
92
93TEST_F(CryptoDESCBCTest, Encrypt) {
94  crypto_.key_.assign(kTestKey, kTestKey + strlen(kTestKey));
95  crypto_.iv_.assign(kTestIV, kTestIV + strlen(kTestIV));
96
97  string ciphertext;
98  EXPECT_FALSE(crypto_.Encrypt(kPlainText, &ciphertext));
99}
100
101TEST_F(CryptoDESCBCTest, Decrypt) {
102  crypto_.key_.assign(kTestKey, kTestKey + strlen(kTestKey));
103  crypto_.iv_.assign(kTestIV, kTestIV + strlen(kTestIV));
104
105  string plaintext;
106  EXPECT_TRUE(crypto_.Decrypt(kEmptyCipher, &plaintext));
107  EXPECT_EQ(kEmptyPlain, plaintext);
108  EXPECT_TRUE(crypto_.Decrypt(kCipherText, &plaintext));
109  EXPECT_EQ(kPlainText, plaintext);
110  EXPECT_TRUE(crypto_.Decrypt(kCipherVersion1, &plaintext));
111  EXPECT_EQ(kPlainVersion1, plaintext);
112
113  EXPECT_FALSE(crypto_.Decrypt("random", &plaintext));
114  EXPECT_FALSE(crypto_.Decrypt("02:random", &plaintext));
115  EXPECT_FALSE(crypto_.Decrypt("~", &plaintext));
116  EXPECT_FALSE(crypto_.Decrypt("02:~", &plaintext));
117  EXPECT_FALSE(crypto_.Decrypt(kEmptyPlain, &plaintext));
118  EXPECT_FALSE(crypto_.Decrypt(kEmptyCipherNoSentinel, &plaintext));
119
120  // echo -n 12345678 | base64
121  EXPECT_FALSE(crypto_.Decrypt("MTIzNDU2Nzg=", &plaintext));
122}
123
124}  // namespace shill
125