1 // Copyright 2014 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 "components/os_crypt/os_crypt.h" 6 7 #include <string> 8 9 #include "base/compiler_specific.h" 10 #include "base/strings/string_util.h" 11 #include "base/strings/utf_string_conversions.h" 12 #include "testing/gtest/include/gtest/gtest.h" 13 14 namespace { 15 16 class OSCryptTest : public testing::Test { 17 public: 18 OSCryptTest() {} 19 20 virtual void SetUp() OVERRIDE { 21 #if defined(OS_MACOSX) 22 OSCrypt::UseMockKeychain(true); 23 #endif 24 } 25 26 private: 27 DISALLOW_COPY_AND_ASSIGN(OSCryptTest); 28 }; 29 30 TEST_F(OSCryptTest, String16EncryptionDecryption) { 31 base::string16 plaintext; 32 base::string16 result; 33 std::string utf8_plaintext; 34 std::string utf8_result; 35 std::string ciphertext; 36 37 // Test borderline cases (empty strings). 38 EXPECT_TRUE(OSCrypt::EncryptString16(plaintext, &ciphertext)); 39 EXPECT_TRUE(OSCrypt::DecryptString16(ciphertext, &result)); 40 EXPECT_EQ(plaintext, result); 41 42 // Test a simple string. 43 plaintext = base::ASCIIToUTF16("hello"); 44 EXPECT_TRUE(OSCrypt::EncryptString16(plaintext, &ciphertext)); 45 EXPECT_TRUE(OSCrypt::DecryptString16(ciphertext, &result)); 46 EXPECT_EQ(plaintext, result); 47 48 // Test a 16-byte aligned string. This previously hit a boundary error in 49 // base::OSCrypt::Crypt() on Mac. 50 plaintext = base::ASCIIToUTF16("1234567890123456"); 51 EXPECT_TRUE(OSCrypt::EncryptString16(plaintext, &ciphertext)); 52 EXPECT_TRUE(OSCrypt::DecryptString16(ciphertext, &result)); 53 EXPECT_EQ(plaintext, result); 54 55 // Test Unicode. 56 base::char16 wchars[] = { 0xdbeb, 0xdf1b, 0x4e03, 0x6708, 0x8849, 57 0x661f, 0x671f, 0x56db, 0x597c, 0x4e03, 58 0x6708, 0x56db, 0x6708, 0xe407, 0xdbaf, 59 0xdeb5, 0x4ec5, 0x544b, 0x661f, 0x671f, 60 0x65e5, 0x661f, 0x671f, 0x4e94, 0xd8b1, 61 0xdce1, 0x7052, 0x5095, 0x7c0b, 0xe586, 0}; 62 plaintext = wchars; 63 utf8_plaintext = base::UTF16ToUTF8(plaintext); 64 EXPECT_EQ(plaintext, base::UTF8ToUTF16(utf8_plaintext)); 65 EXPECT_TRUE(OSCrypt::EncryptString16(plaintext, &ciphertext)); 66 EXPECT_TRUE(OSCrypt::DecryptString16(ciphertext, &result)); 67 EXPECT_EQ(plaintext, result); 68 EXPECT_TRUE(OSCrypt::DecryptString(ciphertext, &utf8_result)); 69 EXPECT_EQ(utf8_plaintext, base::UTF16ToUTF8(result)); 70 71 EXPECT_TRUE(OSCrypt::EncryptString(utf8_plaintext, &ciphertext)); 72 EXPECT_TRUE(OSCrypt::DecryptString16(ciphertext, &result)); 73 EXPECT_EQ(plaintext, result); 74 EXPECT_TRUE(OSCrypt::DecryptString(ciphertext, &utf8_result)); 75 EXPECT_EQ(utf8_plaintext, base::UTF16ToUTF8(result)); 76 } 77 78 TEST_F(OSCryptTest, EncryptionDecryption) { 79 std::string plaintext; 80 std::string result; 81 std::string ciphertext; 82 83 // Test borderline cases (empty strings). 84 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 85 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 86 EXPECT_EQ(plaintext, result); 87 88 // Test a simple string. 89 plaintext = "hello"; 90 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 91 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 92 EXPECT_EQ(plaintext, result); 93 94 // Make sure it null terminates. 95 plaintext.assign("hello", 3); 96 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 97 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 98 EXPECT_EQ(plaintext, "hel"); 99 } 100 101 TEST_F(OSCryptTest, CypherTextDiffers) { 102 std::string plaintext; 103 std::string result; 104 std::string ciphertext; 105 106 // Test borderline cases (empty strings). 107 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 108 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 109 // |cyphertext| is empty on the Mac, different on Windows. 110 EXPECT_TRUE(ciphertext.empty() || plaintext != ciphertext); 111 EXPECT_EQ(plaintext, result); 112 113 // Test a simple string. 114 plaintext = "hello"; 115 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 116 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 117 EXPECT_NE(plaintext, ciphertext); 118 EXPECT_EQ(plaintext, result); 119 120 // Make sure it null terminates. 121 plaintext.assign("hello", 3); 122 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 123 ASSERT_TRUE(OSCrypt::DecryptString(ciphertext, &result)); 124 EXPECT_NE(plaintext, ciphertext); 125 EXPECT_EQ(result, "hel"); 126 } 127 128 TEST_F(OSCryptTest, DecryptError) { 129 std::string plaintext; 130 std::string result; 131 std::string ciphertext; 132 133 // Test a simple string, messing with ciphertext prior to decrypting. 134 plaintext = "hello"; 135 ASSERT_TRUE(OSCrypt::EncryptString(plaintext, &ciphertext)); 136 EXPECT_NE(plaintext, ciphertext); 137 ASSERT_LT(4UL, ciphertext.size()); 138 ciphertext[3] = ciphertext[3] + 1; 139 EXPECT_FALSE(OSCrypt::DecryptString(ciphertext, &result)); 140 EXPECT_NE(plaintext, result); 141 EXPECT_TRUE(result.empty()); 142 } 143 144 } // namespace 145
