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Issue 6805019: Move crypto files out of base, to a top level directory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Fixes comments by eroman Created 9 years, 8 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/crypto/encryptor.h"
6
7 #include <string>
8
9 #include "base/crypto/symmetric_key.h"
10 #include "base/memory/scoped_ptr.h"
11 #include "base/string_number_conversions.h"
12 #include "testing/gtest/include/gtest/gtest.h"
13
14 TEST(EncryptorTest, EncryptDecrypt) {
15 scoped_ptr<base::SymmetricKey> key(base::SymmetricKey::DeriveKeyFromPassword(
16 base::SymmetricKey::AES, "password", "saltiest", 1000, 256));
17 EXPECT_TRUE(NULL != key.get());
18
19 base::Encryptor encryptor;
20 // The IV must be exactly as long as the cipher block size.
21 std::string iv("the iv: 16 bytes");
22 EXPECT_EQ(16U, iv.size());
23 EXPECT_TRUE(encryptor.Init(key.get(), base::Encryptor::CBC, iv));
24
25 std::string plaintext("this is the plaintext");
26 std::string ciphertext;
27 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
28
29 EXPECT_LT(0U, ciphertext.size());
30
31 std::string decypted;
32 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
33
34 EXPECT_EQ(plaintext, decypted);
35 }
36
37 // TODO(wtc): add more known-answer tests. Test vectors are available from
38 // http://www.ietf.org/rfc/rfc3602
39 // http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
40 // http://gladman.plushost.co.uk/oldsite/AES/index.php
41 // http://csrc.nist.gov/groups/STM/cavp/documents/aes/KAT_AES.zip
42
43 // NIST SP 800-38A test vector F.2.5 CBC-AES256.Encrypt.
44 TEST(EncryptorTest, EncryptAES256CBC) {
45 // From NIST SP 800-38a test cast F.2.5 CBC-AES256.Encrypt.
46 static const unsigned char raw_key[] = {
47 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe,
48 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
49 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7,
50 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4
51 };
52 static const unsigned char raw_iv[] = {
53 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
54 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
55 };
56 static const unsigned char raw_plaintext[] = {
57 // Block #1
58 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
59 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
60 // Block #2
61 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
62 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
63 // Block #3
64 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
65 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
66 // Block #4
67 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
68 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10,
69 };
70 static const unsigned char raw_ciphertext[] = {
71 // Block #1
72 0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba,
73 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,
74 // Block #2
75 0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d,
76 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,
77 // Block #3
78 0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf,
79 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,
80 // Block #4
81 0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc,
82 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b,
83 // PKCS #5 padding, encrypted.
84 0x3f, 0x46, 0x17, 0x96, 0xd6, 0xb0, 0xd6, 0xb2,
85 0xe0, 0xc2, 0xa7, 0x2b, 0x4d, 0x80, 0xe6, 0x44
86 };
87
88 std::string key(reinterpret_cast<const char*>(raw_key), sizeof(raw_key));
89 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
90 base::SymmetricKey::AES, key));
91 ASSERT_TRUE(NULL != sym_key.get());
92
93 base::Encryptor encryptor;
94 // The IV must be exactly as long a the cipher block size.
95 std::string iv(reinterpret_cast<const char*>(raw_iv), sizeof(raw_iv));
96 EXPECT_EQ(16U, iv.size());
97 EXPECT_TRUE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
98
99 std::string plaintext(reinterpret_cast<const char*>(raw_plaintext),
100 sizeof(raw_plaintext));
101 std::string ciphertext;
102 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
103
104 EXPECT_EQ(sizeof(raw_ciphertext), ciphertext.size());
105 EXPECT_EQ(0, memcmp(ciphertext.data(), raw_ciphertext, ciphertext.size()));
106
107 std::string decypted;
108 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
109
110 EXPECT_EQ(plaintext, decypted);
111 }
112
113 // Expected output derived from the NSS implementation.
114 TEST(EncryptorTest, EncryptAES128CBCRegression) {
115 std::string key = "128=SixteenBytes";
116 std::string iv = "Sweet Sixteen IV";
117 std::string plaintext = "Plain text with a g-clef U+1D11E \360\235\204\236";
118 std::string expected_ciphertext_hex =
119 "D4A67A0BA33C30F207344D81D1E944BBE65587C3D7D9939A"
120 "C070C62B9C15A3EA312EA4AD1BC7929F4D3C16B03AD5ADA8";
121
122 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
123 base::SymmetricKey::AES, key));
124 ASSERT_TRUE(NULL != sym_key.get());
125
126 base::Encryptor encryptor;
127 // The IV must be exactly as long a the cipher block size.
128 EXPECT_EQ(16U, iv.size());
129 EXPECT_TRUE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
130
131 std::string ciphertext;
132 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
133 EXPECT_EQ(expected_ciphertext_hex, base::HexEncode(ciphertext.data(),
134 ciphertext.size()));
135
136 std::string decypted;
137 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
138 EXPECT_EQ(plaintext, decypted);
139 }
140
141 // Expected output derived from the NSS implementation.
142 TEST(EncryptorTest, EncryptAES192CBCRegression) {
143 std::string key = "192bitsIsTwentyFourByte!";
144 std::string iv = "Sweet Sixteen IV";
145 std::string plaintext = "Small text";
146 std::string expected_ciphertext_hex = "78DE5D7C2714FC5C61346C5416F6C89A";
147
148 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
149 base::SymmetricKey::AES, key));
150 ASSERT_TRUE(NULL != sym_key.get());
151
152 base::Encryptor encryptor;
153 // The IV must be exactly as long a the cipher block size.
154 EXPECT_EQ(16U, iv.size());
155 EXPECT_TRUE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
156
157 std::string ciphertext;
158 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
159 EXPECT_EQ(expected_ciphertext_hex, base::HexEncode(ciphertext.data(),
160 ciphertext.size()));
161
162 std::string decypted;
163 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
164 EXPECT_EQ(plaintext, decypted);
165 }
166
167 // Not all platforms allow import/generation of symmetric keys with an
168 // unsupported size.
169 #if !defined(OS_WIN) && !defined(USE_NSS)
170 TEST(EncryptorTest, UnsupportedKeySize) {
171 std::string key = "7 = bad";
172 std::string iv = "Sweet Sixteen IV";
173 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
174 base::SymmetricKey::AES, key));
175 ASSERT_TRUE(NULL != sym_key.get());
176
177 base::Encryptor encryptor;
178 // The IV must be exactly as long a the cipher block size.
179 EXPECT_EQ(16U, iv.size());
180 EXPECT_FALSE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
181 }
182 #endif // unsupported platforms.
183
184 TEST(EncryptorTest, UnsupportedIV) {
185 std::string key = "128=SixteenBytes";
186 std::string iv = "OnlyForteen :(";
187 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
188 base::SymmetricKey::AES, key));
189 ASSERT_TRUE(NULL != sym_key.get());
190
191 base::Encryptor encryptor;
192 EXPECT_FALSE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
193 }
194
195 TEST(EncryptorTest, EmptyEncrypt) {
196 std::string key = "128=SixteenBytes";
197 std::string iv = "Sweet Sixteen IV";
198 std::string plaintext;
199 std::string expected_ciphertext_hex = "8518B8878D34E7185E300D0FCC426396";
200
201 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
202 base::SymmetricKey::AES, key));
203 ASSERT_TRUE(NULL != sym_key.get());
204
205 base::Encryptor encryptor;
206 // The IV must be exactly as long a the cipher block size.
207 EXPECT_EQ(16U, iv.size());
208 EXPECT_TRUE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
209
210 std::string ciphertext;
211 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
212 EXPECT_EQ(expected_ciphertext_hex, base::HexEncode(ciphertext.data(),
213 ciphertext.size()));
214 }
215
216 TEST(EncryptorTest, EmptyDecrypt) {
217 std::string key = "128=SixteenBytes";
218 std::string iv = "Sweet Sixteen IV";
219
220 scoped_ptr<base::SymmetricKey> sym_key(base::SymmetricKey::Import(
221 base::SymmetricKey::AES, key));
222 ASSERT_TRUE(NULL != sym_key.get());
223
224 base::Encryptor encryptor;
225 // The IV must be exactly as long a the cipher block size.
226 EXPECT_EQ(16U, iv.size());
227 EXPECT_TRUE(encryptor.Init(sym_key.get(), base::Encryptor::CBC, iv));
228
229 std::string decrypted;
230 EXPECT_FALSE(encryptor.Decrypt("", &decrypted));
231 EXPECT_EQ("", decrypted);
232 }
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