Implement PBKDF2-based key derivation, random key generation,...

base/crypto/encryptor_unittest.cc

 // Copyright (c) 2010 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 "base/crypto/encryptor.h"
 
 #include <string>
 
 #include "base/crypto/symmetric_key.h"
 #include "base/scoped_ptr.h"
-#include "base/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#if defined(USE_NSS) || defined(OS_MACOSX)
-#define MAYBE(name) name
-#else
-#define MAYBE(name) DISABLED_ ## name
-#endif
-
-TEST(EncryptorTest, MAYBE(EncryptDecrypt)) {
+TEST(EncryptorTest, EncryptDecrypt) {
   scoped_ptr<base::SymmetricKey> key(base::SymmetricKey::DeriveKeyFromPassword(
       base::SymmetricKey::AES, "password", "saltiest", 1000, 256));
   EXPECT_TRUE(NULL != key.get());
 
   base::Encryptor encryptor;
-  // The IV must be exactly as long a the cipher block size.
+  // The IV must be exactly as long as the cipher block size.
   std::string iv("the iv: 16 bytes");
+  EXPECT_EQ(16U, iv.size());
   EXPECT_TRUE(encryptor.Init(key.get(), base::Encryptor::CBC, iv));
 
   std::string plaintext("this is the plaintext");
   std::string ciphertext;
   EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
 
   EXPECT_LT(0U, ciphertext.size());
 
   std::string decypted;
   EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
 
   EXPECT_EQ(plaintext, decypted);
 }
+
+// TODO(wtc): add more known-answer tests.  Test vectors are available from
+// http://www.ietf.org/rfc/rfc3602
+// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
+// http://gladman.plushost.co.uk/oldsite/AES/index.php
+// http://csrc.nist.gov/groups/STM/cavp/documents/aes/KAT_AES.zip
+
+// TODO(wtc): enable this test for other platforms after
+// base::SymmetricKey::Import is implemented.
+#if defined(OS_WIN)
+// NIST SP 800-38A test vector F.2.5 CBC-AES256.Encrypt.
+TEST(EncryptorTest, EncryptAES256CBC) {
+  // From NIST SP 800-38a test cast F.2.5 CBC-AES256.Encrypt.
+  static const unsigned char raw_key[] = {
+    0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe,
+    0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
+    0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7,
+    0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4
+  };
+  static const unsigned char raw_iv[] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+  };
+  static const unsigned char raw_plaintext[] = {
+    // Block #1
+    0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
+    0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
+    // Block #2
+    0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
+    0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
+    // Block #3
+    0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
+    0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
+    // Block #4
+    0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
+    0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10,
+  };
+  static const unsigned char raw_ciphertext[] = {
+    // Block #1
+    0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba,
+    0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,
+    // Block #2
+    0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d,
+    0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,
+    // Block #3
+    0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf,
+    0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,
+    // Block #4
+    0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc,
+    0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b,
+    // PKCS #5 padding, encrypted.
+    0x3f, 0x46, 0x17, 0x96, 0xd6, 0xb0, 0xd6, 0xb2,
+    0xe0, 0xc2, 0xa7, 0x2b, 0x4d, 0x80, 0xe6, 0x44
+  };
+
+  scoped_ptr<base::SymmetricKey> key(base::SymmetricKey::Import(
+      base::SymmetricKey::AES, raw_key, sizeof(raw_key)));
+  EXPECT_TRUE(NULL != key.get());
+
+  base::Encryptor encryptor;
+  // The IV must be exactly as long a the cipher block size.
+  std::string iv(reinterpret_cast<const char*>(raw_iv), sizeof(raw_iv));
+  EXPECT_EQ(16U, iv.size());
+  EXPECT_TRUE(encryptor.Init(key.get(), base::Encryptor::CBC, iv));
+
+  std::string plaintext(reinterpret_cast<const char*>(raw_plaintext),
+                        sizeof(raw_plaintext));
+  std::string ciphertext;
+  EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
+
+  EXPECT_EQ(sizeof(raw_ciphertext), ciphertext.size());
+  EXPECT_EQ(0, memcmp(ciphertext.data(), raw_ciphertext, ciphertext.size()));
+
+  std::string decypted;
+  EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
+
+  EXPECT_EQ(plaintext, decypted);
+}
+#endif  // OS_WIN