[webcrypto] Add raw symmetric key AES-KW wrap/unwrap for NSS.

content/renderer/webcrypto/webcrypto_impl_unittest.cc

Index: content/renderer/webcrypto/webcrypto_impl_unittest.cc
diff --git a/content/renderer/webcrypto/webcrypto_impl_unittest.cc b/content/renderer/webcrypto/webcrypto_impl_unittest.cc
index 32afa23ebe14d34f122bdf80a86578e97ef9621a..cbb6cf6d119caf4fc1ce15d8b3cea6a60204ff9e 100644
--- a/content/renderer/webcrypto/webcrypto_impl_unittest.cc
+++ b/content/renderer/webcrypto/webcrypto_impl_unittest.cc
@@ -1911,6 +1911,195 @@ TEST_F(WebCryptoImplTest, MAYBE(AesKwKeyImport)) {
                                  &key));
 }
 
+TEST_F(WebCryptoImplTest, MAYBE(AesKwEncryptDecryptKnownAnswer)) {
+
+  // The following tests use test vectors from
+  // http://www.ietf.org/rfc/rfc3394.txt
+
+  struct TestCase {
+    const char* kek_hex;
+    const char* data_hex;
+    const char* ciphertext_hex;
+  };
+
+  const TestCase kTests[] = {
+    // 4.1 Wrap 128 bits of Key Data with a 128-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F",
+      "00112233445566778899AABBCCDDEEFF",
+      "1FA68B0A8112B447AEF34BD8FB5A7B829D3E862371D2CFE5"
+    },
+    // 4.2 Wrap 128 bits of Key Data with a 192-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F1011121314151617",
+      "00112233445566778899AABBCCDDEEFF",
+      "96778B25AE6CA435F92B5B97C050AED2468AB8A17AD84E5D"
+    },
+    // 4.3 Wrap 128 bits of Key Data with a 256-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F",
+      "00112233445566778899AABBCCDDEEFF",
+      "64E8C3F9CE0F5BA263E9777905818A2A93C8191E7D6E8AE7"
+    },
+    // 4.4 Wrap 192 bits of Key Data with a 192-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F1011121314151617",
+      "00112233445566778899AABBCCDDEEFF0001020304050607",
+      "031D33264E15D33268F24EC260743EDCE1C6C7DDEE725A936BA814915C6762D2"
+    },
+    // 4.5 Wrap 192 bits of Key Data with a 256-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F",
+      "00112233445566778899AABBCCDDEEFF0001020304050607",
+      "A8F9BC1612C68B3FF6E6F4FBE30E71E4769C8B80A32CB8958CD5D17D6B254DA1"
+
+    },
+    // 4.6 Wrap 256 bits of Key Data with a 256-bit KEK
+    {
+      "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F",
+      "00112233445566778899AABBCCDDEEFF000102030405060708090A0B0C0D0E0F",
+      "28C9F404C4B810F4CBCCB35CFB87F8263F5786E2D80ED326CBC7F0E71A99F43BFB988B9B"
+          "7A02DD21"
+    },
+  };
+
+  for (size_t index = 0; index < ARRAYSIZE_UNSAFE(kTests); index++) {
+
+    SCOPED_TRACE(index);
+    const TestCase& test = kTests[index];
+    const blink::WebCryptoAlgorithm algorithm =
+        webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);
+
+    // Import the key.
+    blink::WebCryptoKey key = ImportSecretKeyFromRawHexString(
+        test.kek_hex,
+        algorithm,
+        blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey);
+
+    // Verify the exported raw key is identical to the imported data.
+    blink::WebArrayBuffer raw_key;
+    EXPECT_TRUE(ExportKeyInternal(blink::WebCryptoKeyFormatRaw, key, &raw_key));
+    ExpectArrayBufferMatchesHex(test.kek_hex, raw_key);
+
+    // Encrypt the data and verify the result against the known answer.
+    blink::WebArrayBuffer output;
+    EXPECT_TRUE(EncryptInternal(algorithm,
+                                key,
+                                HexStringToBytes(test.data_hex),
+                                &output));
+    ExpectArrayBufferMatchesHex(test.ciphertext_hex, output);
+
+    // Decrypt the ciphertext and verify the result against the known input.
+    EXPECT_TRUE(DecryptInternal(algorithm,
+                                key,
+                                HexStringToBytes(test.ciphertext_hex),
+                                &output));
+    ExpectArrayBufferMatchesHex(test.data_hex, output);
+  }
+}
+
+TEST_F(WebCryptoImplTest, MAYBE(AesKwEncryptDecryptFailures)) {
+  const blink::WebCryptoAlgorithm algorithm =
+      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);
+  blink::WebCryptoKey key = ImportSecretKeyFromRawHexString(
+      "000102030405060708090A0B0C0D0E0F",
+      algorithm,
+      blink::WebCryptoKeyUsageWrapKey);
+
+  // For encrypt, the input data size must be at least 16 bytes. Expect failure
+  // with a data size of 8 bytes, and success with 16.
+  blink::WebArrayBuffer output;
+  EXPECT_FALSE(EncryptInternal(
+      algorithm,
+      key,
+      HexStringToBytes("11f9ec1b249b2629"),
+      &output));
+  EXPECT_TRUE(EncryptInternal(
+      algorithm,
+      key,
+      HexStringToBytes("2139128461ed6d341dff4db94f60094f"),
+      &output));
+
+  // For encrypt, the input data size must be a multiple of 8 bytes. Expect
+  // failure with a data size of 17 bytes.
+  EXPECT_FALSE(EncryptInternal(
+      algorithm,
+      key,
+      HexStringToBytes("0248cb45ca808c8aacfad2b2c092c15745"),
+      &output));
+}
+
+TEST_F(WebCryptoImplTest, MAYBE(AesKwEncryptLargeData)) {
+  const std::string large_data_hex =
+      "308204be020100300d06092a864886f70d0101010500048204a8308204a4"
+      "0201000282010100b3097277c6f9c16f7110441ccc00d8ec364d8b3eb1aa"
+      "c3bca32a8877fe348a901a34c3b87917ba00e682caa7677e9e6b2fe2815c"
+      "fb5ffd764b85a00ec6e2265693b2197fdcd832308b2b0ecd5069c8871161"
+      "40f420c4050ba97157e93756ac1b8052b5ec6f2a846ab569afd6169465e1"
+      "641bd1bc3542e4c56b4c925d89e8db6584f17fe10ac32d99d1858e08cf6e"
+      "6c7ff000cff2147ce03941251a521f972da975d9a777ac4b8be34aad468c"
+      "33422d7848fa0c24314d3f8872f1bbd86ea0d6a641351d8bbaeb075a080f"
+      "6ee6749b39b02db5ee27d593bfe67c460435bb183ebb801ebd16d06f9f4a"
+      "5043d44ba57e19dd993a50ef06a6783eba6cf58c55359449020301000102"
+      "82010100931f9d481e6398f89a21b2c7334133011132b1cd68349abac61e"
+      "aa9c687206b79a4167e08ce9d978e9f3ead29c32a9be0d5085dbc1da44af"
+      "d429cfb8b4e89c76a2d24530146c38fa3932bdec2c3b7184c4dc7582e7f6"
+      "0ceb636777c5772b2b2d424b35a2404be11acb4f3926a5d176d33befbc6f"
+      "7c192763afe3f1971a4017213a165a13492f908ce62842fd3a0470dc4323"
+      "b043466314e68d552843c18e7b17a3cd7bbabb511bb0df749690fd22a839"
+      "32549abd601a2b003d5b0aa7da79f0903964a441d8104f1a4dda10fea67d"
+      "0de925fe035345a2c6dd96af2ffd8ed7c5d31fac53d10ffc5d23126bcddf"
+      "9c077e04a139329ff208f343365255241faf6c8102818100e3895040106b"
+      "dd8d2e9db21051105690c92232db1d2b352558f1c7c7d2f13b6afe19c7b6"
+      "05a111e03efac73f676ad86a03740de7dc5dff314cb600b7838b148343fb"
+      "0f3a5dc682656b733fa8d747fe830932695ab390c65c21d57d5efd962215"
+      "5713ffd4c1902ecc99475d4d3a7fe90744fdd226d8028752710677273362"
+      "0f1102818100c96ef928fe52099d4e4fc2bb645cd8790830d19ef1171956"
+      "48ab636b9b5c42549af7b737b099fc9604c3b3397abbd884f58e5f8a3e12"
+      "8806ae29c81c64702de848995772bc96699c45d8ecf0ad4169c27d1bda51"
+      "fbe70ce03f1a6c5bb731ab807b4f07d30ce98f1da73f7804c3ab48e007a1"
+      "308024fa1db0d3bd30d207efa1b902818100a9749237a4033134fc0aa59a"
+      "514501b342981d97e1d953f344928c5edd529b15cbb8176c10352cc2fd24"
+      "774f590dd1aee2738407b1aeaf675fe20c169ff8ec85f612fbfc53ea8b22"
+      "4d2bbfb556df5f44e78c8bb9e91161292c697abd4bce8c03a89e546176e6"
+      "9273fd939080fb98574bfaadaddd0ff292256bd78cd5bd06c28102818053"
+      "e328569f1b512fb6b656d5ada550ed8eb0ae0bb041bb66889affab87a6f3"
+      "64c2a8d91f93277dde881b6c1f4af2c1e8154f76905eeb5ec4d1714b0a2f"
+      "f5dbd879ab8a9498df571a22a8857c71dae50d7f06c374132114e6aac0f9"
+      "5174c875b0eb296d8bc23bde432e2cab71e87f03b970d3fb1bd2ca6ae502"
+      "392f04b9135dd902818045876edc196281cf5b1a33b677c0c521a3683fd2"
+      "4ff7ef6a4f7934bdc9a91adf9b345b01a23e3c928b44a2f6549a77790d6a"
+      "aaa6180530da566a4ade6c9625873bbb3261b203e1e5d2dd9e1fd17a4fa4"
+      "01182dffc3b15d4af1661264a4380e1c48693377e668c4d18d1f3e9c5bd2"
+      "513fa455369d54fd93d3f358ae8a5eae";
+
+  const blink::WebCryptoAlgorithm algorithm =
+      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);
+
+  // Import a wrapping key.
+  blink::WebCryptoKey key = ImportSecretKeyFromRawHexString(
+      "000102030405060708090A0B0C0D0E0F",
+      algorithm,
+      blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey);
+
+  // Encrypt the large data.
+  blink::WebArrayBuffer ciphertext;
+  ASSERT_TRUE(EncryptInternal(algorithm,
+                              key,
+                              HexStringToBytes(large_data_hex),
+                              &ciphertext));
+
+  // Decrypt the resulting ciphertext and verify against the input.
+  blink::WebArrayBuffer plaintext;
+  EXPECT_TRUE(DecryptInternal(
+      algorithm,
+      key,
+      reinterpret_cast<const unsigned char*>(ciphertext.data()),
+      ciphertext.byteLength(),
+      &plaintext));
+  ExpectArrayBufferMatchesHex(large_data_hex, plaintext);
+}
+
 // TODO(eroman):
 //   * Test decryption when the tag length exceeds input size
 //   * Test decryption with empty input