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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.adservices;
import org.junit.Assert;
import org.junit.Test;
import java.util.Base64;
public class HpkeJniTest {
private static final byte[] sAssociatedData = "associated_data".getBytes();
private static final byte[] sPlaintext = "plaintext".getBytes();
private static final byte[] sCiphertext =
decode("0Ie+jDZ/Hznx1IrIkS06V+kAHuD5RsybXWwrKRIbGEL5TJT4/HYny2SHfWbeXxMydwvS0FEZqvzs");
private static final byte[] sPublicKey = decode("rSJBSUYG0ebvfW1AXCWO0CMGMJhDzpfQm3eLyw1uxX8=");
private static final byte[] sPrivateKey =
decode("f86EzLmGaVmc+PwjJk5ADPE4ijQvliWf0CQyY/Zyy7I=");
@Test
public void testHpkeEncrypt_Success() {
final byte[] result = HpkeJni.encrypt(sPublicKey, sPlaintext, sAssociatedData);
Assert.assertNotNull(result);
Assert.assertTrue(result.length > 0);
}
@Test
public void testHpkeDecrypt_Success() {
final byte[] result = HpkeJni.decrypt(sPrivateKey, sCiphertext, sAssociatedData);
Assert.assertNotNull(result);
Assert.assertTrue(result.length > 0);
Assert.assertTrue(new String(sPlaintext).equals(new String(result)));
}
@Test
public void testHpkeEncryptDecrypt_Success() {
final byte[] ciphertext = HpkeJni.encrypt(sPublicKey, sPlaintext, sAssociatedData);
Assert.assertNotNull(ciphertext);
Assert.assertTrue(ciphertext.length > 0);
Assert.assertFalse(new String(sPlaintext).equals(new String(ciphertext)));
final byte[] plaintext = HpkeJni.decrypt(sPrivateKey, ciphertext, sAssociatedData);
Assert.assertNotNull(plaintext);
Assert.assertTrue(plaintext.length > 0);
Assert.assertTrue(new String(sPlaintext).equals(new String(plaintext)));
}
@Test
public void testHpkeEncrypt_publicKeyNull_fail() {
final byte[] result = HpkeJni.encrypt(/* publicKey= */ null, sPlaintext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeEncrypt_publicKeyShorterThan32_fail() {
final byte[] shortPublicKey = new byte[31];
final byte[] result = HpkeJni.encrypt(shortPublicKey, sPlaintext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeEncrypt_publicKeyLongerThan32_fail() {
final byte[] longPublicKey = new byte[33];
final byte[] result = HpkeJni.encrypt(longPublicKey, sPlaintext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeEncrypt_plainTextNull_fail() {
final byte[] result = HpkeJni.encrypt(sPublicKey, /* plainText = */ null, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeEncrypt_plainTextEmpty_success() {
final byte[] emptyPlainText = new byte[] {};
final byte[] result = HpkeJni.encrypt(sPublicKey, emptyPlainText, sAssociatedData);
Assert.assertNotNull(result);
Assert.assertTrue(result.length > 0);
}
@Test
public void testHpkeEncrypt_associatedDataNull_fail() {
final byte[] result = HpkeJni.encrypt(sPublicKey, sPlaintext, /* associatedData = */ null);
Assert.assertNull(result);
}
@Test
public void testHpkeEncrypt_associatedDataEmpty_success() {
final byte[] emptyAssociatedData = new byte[] {};
final byte[] result = HpkeJni.encrypt(sPublicKey, sPlaintext, emptyAssociatedData);
Assert.assertNotNull(result);
Assert.assertTrue(result.length > 0);
}
@Test
public void testHpkeDecrypt_privateKeyNull_fail() {
final byte[] result = HpkeJni.decrypt(/* privateKey= */ null, sCiphertext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkDecrypt_privateKeyShorterThan32_fail() {
final byte[] shortPrivateKey = new byte[31];
final byte[] result = HpkeJni.decrypt(shortPrivateKey, sCiphertext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeDecrypt_privateKeyLargerThan32_fail() {
final byte[] longPrivateKey = new byte[33];
final byte[] result = HpkeJni.decrypt(longPrivateKey, sCiphertext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeDecrypt_privateKeyInvalid_fail() {
final byte[] privateKey = new byte[32];
final byte[] result = HpkeJni.decrypt(privateKey, sCiphertext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeDecrypt_ciphertextNull_fail() {
final byte[] result =
HpkeJni.encrypt(sPrivateKey, /* ciphertext = */ null, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeDecrypt_ciphertextInvalid_fail() {
final byte[] emptyCiphertext = new byte[] {};
final byte[] result = HpkeJni.decrypt(sPrivateKey, emptyCiphertext, sAssociatedData);
Assert.assertNull(result);
}
@Test
public void testHpkeDecrypt_associatedDataNull_fail() {
final byte[] result =
HpkeJni.decrypt(sPrivateKey, sCiphertext, /* associatedData = */ null);
Assert.assertNull(result);
}
private static byte[] decode(String value) {
return Base64.getDecoder().decode(value.getBytes());
}
}
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