77f7ef98c0
This is the initial code drop of the reference implementation and test cases for the Widevine Whitebox API. In this drop, the full reference implementation for the AEAD white-box is provided and all test cases verifying the top-level behave have are enabled. Since the implementations can vary so much the testing is mostly left to verifying the return codes for specific parameter conditions. A full reference implementation for the license white-box is provided, however not all tests are implemented or enabled. A number of tests have been disabled as they required a loaded license and test licenses are still being worked on. The two license white-box API functions that are the further from competition are ProcessLicenseResponse() and MaskedDecryt(). ProcessLicenseResponse() is still being worked on and MaskedDecrypt() is waiting on Decrypt() to be fully functional. Most tests focus on verifying return code for specific parameter conditions, but as test licenses are created, tests looking to test the internal behaviour of license management will be added to ProcessLicenseResponse(), Decrypt(), and MaskedDecrypt().
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
#include "crypto_utils/aes_ctr_encryptor.h"
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#include <cstdint>
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#include <vector>
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#include "testing/include/gmock/gmock.h"
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#include "testing/include/gtest/gtest.h"
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using ::testing::ElementsAreArray;
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namespace widevine {
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namespace {
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// From NIST SP 800-38a test case: - F.5.1 CTR-AES128.Encrypt
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// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
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const uint8_t kAesKey[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
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0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
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const uint8_t kAesIv[] = {0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
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0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff};
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const uint8_t kAesCtrPlaintext[] = {
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// Block #1
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0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11,
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0x73, 0x93, 0x17, 0x2a,
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// Block #2
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0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac,
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0x45, 0xaf, 0x8e, 0x51,
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// Block #3
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0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19,
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0x1a, 0x0a, 0x52, 0xef,
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// Block #4
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0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b,
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0xe6, 0x6c, 0x37, 0x10};
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const uint8_t kAesCtrCiphertext[] = {
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// Block #1
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0x87, 0x4d, 0x61, 0x91, 0xb6, 0x20, 0xe3, 0x26, 0x1b, 0xef, 0x68, 0x64,
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0x99, 0x0d, 0xb6, 0xce,
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// Block #2
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0x98, 0x06, 0xf6, 0x6b, 0x79, 0x70, 0xfd, 0xff, 0x86, 0x17, 0x18, 0x7b,
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0xb9, 0xff, 0xfd, 0xff,
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// Block #3
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0x5a, 0xe4, 0xdf, 0x3e, 0xdb, 0xd5, 0xd3, 0x5e, 0x5b, 0x4f, 0x09, 0x02,
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0x0d, 0xb0, 0x3e, 0xab,
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// Block #4
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0x1e, 0x03, 0x1d, 0xda, 0x2f, 0xbe, 0x03, 0xd1, 0x79, 0x21, 0x70, 0xa0,
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0xf3, 0x00, 0x9c, 0xee};
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const uint8_t kIv128Zero[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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const uint8_t kIv128Max64[] = {0, 0, 0, 0, 0, 0, 0, 0,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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} // namespace
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TEST(AesCtrEncryptorTest, NistTestCase) {
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AesCtrEncryptor encryptor;
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ASSERT_TRUE(encryptor.SetKey(kAesKey, sizeof(kAesKey)));
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std::vector<uint8_t> output(sizeof(kAesCtrPlaintext));
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ASSERT_TRUE(encryptor.Encrypt(kAesIv, sizeof(kAesIv), kAesCtrPlaintext,
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sizeof(kAesCtrPlaintext), output.data()));
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EXPECT_THAT(output,
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ElementsAreArray(kAesCtrCiphertext, sizeof(kAesCtrCiphertext)));
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}
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TEST(AesCtrEncryptorTest, 128BitIVMax64BoundaryCaseEncryption) {
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AesCtrEncryptor encryptor;
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ASSERT_TRUE(encryptor.SetKey(kAesKey, sizeof(kAesKey)));
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std::vector<uint8_t> output(sizeof(kAesCtrPlaintext));
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ASSERT_TRUE(encryptor.Encrypt(kIv128Max64, sizeof(kIv128Max64),
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kAesCtrPlaintext, sizeof(kAesCtrPlaintext),
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output.data()));
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// There are four blocks in plain text. The first block should be encrypted
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// with IV = kIv128Max64, the subsequent blocks should be encrypted with iv 0
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// to 3.
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std::vector<uint8_t> output2(sizeof(kAesCtrPlaintext));
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ASSERT_TRUE(encryptor.Encrypt(kIv128Max64, sizeof(kIv128Max64),
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kAesCtrPlaintext, 16, &output2[0]));
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ASSERT_TRUE(encryptor.Encrypt(kIv128Zero, sizeof(kIv128Zero),
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&kAesCtrPlaintext[16],
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sizeof(kAesCtrPlaintext) - 16, &output2[16]));
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EXPECT_EQ(output, output2);
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}
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} // namespace widevine
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