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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 "crypto/sha2.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "testing/gtest/include/gtest/gtest.h"
      9 
     10 TEST(Sha256Test, Test1) {
     11   // Example B.1 from FIPS 180-2: one-block message.
     12   std::string input1 = "abc";
     13   int expected1[] = { 0xba, 0x78, 0x16, 0xbf,
     14                       0x8f, 0x01, 0xcf, 0xea,
     15                       0x41, 0x41, 0x40, 0xde,
     16                       0x5d, 0xae, 0x22, 0x23,
     17                       0xb0, 0x03, 0x61, 0xa3,
     18                       0x96, 0x17, 0x7a, 0x9c,
     19                       0xb4, 0x10, 0xff, 0x61,
     20                       0xf2, 0x00, 0x15, 0xad };
     21 
     22   uint8 output1[crypto::SHA256_LENGTH];
     23   crypto::SHA256HashString(input1, output1, sizeof(output1));
     24   for (size_t i = 0; i < crypto::SHA256_LENGTH; i++)
     25     EXPECT_EQ(expected1[i], static_cast<int>(output1[i]));
     26 
     27   uint8 output_truncated1[4];  // 4 bytes == 32 bits
     28   crypto::SHA256HashString(input1,
     29                            output_truncated1, sizeof(output_truncated1));
     30   for (size_t i = 0; i < sizeof(output_truncated1); i++)
     31     EXPECT_EQ(expected1[i], static_cast<int>(output_truncated1[i]));
     32 }
     33 
     34 TEST(Sha256Test, Test1_String) {
     35   // Same as the above, but using the wrapper that returns a std::string.
     36   // Example B.1 from FIPS 180-2: one-block message.
     37   std::string input1 = "abc";
     38   int expected1[] = { 0xba, 0x78, 0x16, 0xbf,
     39                       0x8f, 0x01, 0xcf, 0xea,
     40                       0x41, 0x41, 0x40, 0xde,
     41                       0x5d, 0xae, 0x22, 0x23,
     42                       0xb0, 0x03, 0x61, 0xa3,
     43                       0x96, 0x17, 0x7a, 0x9c,
     44                       0xb4, 0x10, 0xff, 0x61,
     45                       0xf2, 0x00, 0x15, 0xad };
     46 
     47   std::string output1 = crypto::SHA256HashString(input1);
     48   ASSERT_EQ(crypto::SHA256_LENGTH, output1.size());
     49   for (size_t i = 0; i < crypto::SHA256_LENGTH; i++)
     50     EXPECT_EQ(expected1[i], static_cast<uint8>(output1[i]));
     51 }
     52 
     53 TEST(Sha256Test, Test2) {
     54   // Example B.2 from FIPS 180-2: multi-block message.
     55   std::string input2 =
     56       "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
     57   int expected2[] = { 0x24, 0x8d, 0x6a, 0x61,
     58                       0xd2, 0x06, 0x38, 0xb8,
     59                       0xe5, 0xc0, 0x26, 0x93,
     60                       0x0c, 0x3e, 0x60, 0x39,
     61                       0xa3, 0x3c, 0xe4, 0x59,
     62                       0x64, 0xff, 0x21, 0x67,
     63                       0xf6, 0xec, 0xed, 0xd4,
     64                       0x19, 0xdb, 0x06, 0xc1 };
     65 
     66   uint8 output2[crypto::SHA256_LENGTH];
     67   crypto::SHA256HashString(input2, output2, sizeof(output2));
     68   for (size_t i = 0; i < crypto::SHA256_LENGTH; i++)
     69     EXPECT_EQ(expected2[i], static_cast<int>(output2[i]));
     70 
     71   uint8 output_truncated2[6];
     72   crypto::SHA256HashString(input2,
     73                            output_truncated2, sizeof(output_truncated2));
     74   for (size_t i = 0; i < sizeof(output_truncated2); i++)
     75     EXPECT_EQ(expected2[i], static_cast<int>(output_truncated2[i]));
     76 }
     77 
     78 TEST(Sha256Test, Test3) {
     79   // Example B.3 from FIPS 180-2: long message.
     80   std::string input3(1000000, 'a');  // 'a' repeated a million times
     81   int expected3[] = { 0xcd, 0xc7, 0x6e, 0x5c,
     82                       0x99, 0x14, 0xfb, 0x92,
     83                       0x81, 0xa1, 0xc7, 0xe2,
     84                       0x84, 0xd7, 0x3e, 0x67,
     85                       0xf1, 0x80, 0x9a, 0x48,
     86                       0xa4, 0x97, 0x20, 0x0e,
     87                       0x04, 0x6d, 0x39, 0xcc,
     88                       0xc7, 0x11, 0x2c, 0xd0 };
     89 
     90   uint8 output3[crypto::SHA256_LENGTH];
     91   crypto::SHA256HashString(input3, output3, sizeof(output3));
     92   for (size_t i = 0; i < crypto::SHA256_LENGTH; i++)
     93     EXPECT_EQ(expected3[i], static_cast<int>(output3[i]));
     94 
     95   uint8 output_truncated3[12];
     96   crypto::SHA256HashString(input3,
     97                            output_truncated3, sizeof(output_truncated3));
     98   for (size_t i = 0; i < sizeof(output_truncated3); i++)
     99     EXPECT_EQ(expected3[i], static_cast<int>(output_truncated3[i]));
    100 }
    101