1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.locksettings;
18 
19 import static org.junit.Assert.assertEquals;
20 
21 import android.platform.test.annotations.Presubmit;
22 
23 import androidx.test.filters.SmallTest;
24 import androidx.test.runner.AndroidJUnit4;
25 
26 import com.android.internal.util.HexDump;
27 
28 import org.junit.Test;
29 import org.junit.runner.RunWith;
30 
31 @SmallTest
32 @Presubmit
33 @RunWith(AndroidJUnit4.class)
34 public class SP800DeriveTests {
35     @Test
testFixedInput()36     public void testFixedInput() throws Exception {
37         // CAVP: https://csrc.nist.gov/projects/cryptographic-algorithm-validation-program/key-derivation
38         byte[] keyBytes = HexDump.hexStringToByteArray(
39             "e204d6d466aad507ffaf6d6dab0a5b26"
40             + "152c9e21e764370464e360c8fbc765c6");
41         SP800Derive sk = new SP800Derive(keyBytes);
42         byte[] fixedInput = HexDump.hexStringToByteArray(
43             "7b03b98d9f94b899e591f3ef264b71b1"
44             + "93fba7043c7e953cde23bc5384bc1a62"
45             + "93580115fae3495fd845dadbd02bd645"
46             + "5cf48d0f62b33e62364a3a80");
47         byte[] res = sk.fixedInput(fixedInput);
48         assertEquals((
49                 "770dfab6a6a4a4bee0257ff335213f78"
50                 + "d8287b4fd537d5c1fffa956910e7c779").toUpperCase(), HexDump.toHexString(res));
51     }
52 }
53