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/*
* Copyright (C) 2017 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 android.security;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import android.os.Parcel;
import android.security.keystore.KeyGenParameterSpec;
import android.security.keystore.ParcelableKeyGenParameterSpec;
import android.security.keystore.KeyProperties;
import android.support.test.runner.AndroidJUnit4;
import java.math.BigInteger;
import java.security.spec.ECGenParameterSpec;
import java.security.spec.RSAKeyGenParameterSpec;
import java.util.Date;
import javax.security.auth.x500.X500Principal;
import org.junit.Test;
import org.junit.runner.RunWith;
/** Unit tests for {@link ParcelableKeyGenParameterSpec}. */
@RunWith(AndroidJUnit4.class)
public final class ParcelableKeyGenParameterSpecTest {
static final String ALIAS = "keystore-alias";
static final String ANOTHER_ALIAS = "another-keystore-alias";
static final int KEY_PURPOSES = KeyProperties.PURPOSE_SIGN | KeyProperties.PURPOSE_VERIFY;
static final int UID = 1230;
static final int KEYSIZE = 2048;
static final X500Principal SUBJECT = new X500Principal("CN=subject");
static final BigInteger SERIAL = new BigInteger("1234567890");
static final Date NOT_BEFORE = new Date(1511799590);
static final Date NOT_AFTER = new Date(1511899590);
static final Date KEY_VALIDITY_START = new Date(1511799591);
static final Date KEY_VALIDITY_FOR_ORIG_END = new Date(1511799593);
static final Date KEY_VALIDITY_FOR_CONSUMPTION_END = new Date(1511799594);
static final String DIGEST = KeyProperties.DIGEST_SHA256;
static final String ENCRYPTION_PADDING = KeyProperties.ENCRYPTION_PADDING_RSA_PKCS1;
static final String SIGNATURE_PADDING = KeyProperties.SIGNATURE_PADDING_RSA_PSS;
static final String BLOCK_MODE = KeyProperties.BLOCK_MODE_CBC;
static final int USER_AUTHENTICATION_DURATION = 300;
static final byte[] ATTESTATION_CHALLENGE = new byte[] {'c', 'h'};
KeyGenParameterSpec configureDefaultSpec() {
return new KeyGenParameterSpec.Builder(ALIAS, KEY_PURPOSES)
.setUid(UID)
.setKeySize(KEYSIZE)
.setCertificateSubject(SUBJECT)
.setCertificateSerialNumber(SERIAL)
.setCertificateNotBefore(NOT_BEFORE)
.setCertificateNotAfter(NOT_AFTER)
.setKeyValidityStart(KEY_VALIDITY_START)
.setKeyValidityForOriginationEnd(KEY_VALIDITY_FOR_ORIG_END)
.setKeyValidityForConsumptionEnd(KEY_VALIDITY_FOR_CONSUMPTION_END)
.setDigests(DIGEST)
.setEncryptionPaddings(ENCRYPTION_PADDING)
.setSignaturePaddings(SIGNATURE_PADDING)
.setBlockModes(BLOCK_MODE)
.setRandomizedEncryptionRequired(true)
.setUserAuthenticationRequired(true)
.setUserAuthenticationValidityDurationSeconds(USER_AUTHENTICATION_DURATION)
.setAttestationChallenge(ATTESTATION_CHALLENGE)
.setUniqueIdIncluded(true)
.setUserAuthenticationValidWhileOnBody(true)
.setInvalidatedByBiometricEnrollment(true)
.build();
}
void validateSpecValues(KeyGenParameterSpec spec, int uid, String alias) {
assertThat(spec.getKeystoreAlias(), is(alias));
assertThat(spec.getPurposes(), is(KEY_PURPOSES));
assertThat(spec.getUid(), is(uid));
assertThat(spec.getKeySize(), is(KEYSIZE));
assertThat(spec.getCertificateSubject(), is(SUBJECT));
assertThat(spec.getCertificateSerialNumber(), is(SERIAL));
assertThat(spec.getCertificateNotBefore(), is(NOT_BEFORE));
assertThat(spec.getCertificateNotAfter(), is(NOT_AFTER));
assertThat(spec.getKeyValidityStart(), is(KEY_VALIDITY_START));
assertThat(spec.getKeyValidityForOriginationEnd(), is(KEY_VALIDITY_FOR_ORIG_END));
assertThat(spec.getKeyValidityForConsumptionEnd(), is(KEY_VALIDITY_FOR_CONSUMPTION_END));
assertThat(spec.getDigests(), is(new String[] {DIGEST}));
assertThat(spec.getEncryptionPaddings(), is(new String[] {ENCRYPTION_PADDING}));
assertThat(spec.getSignaturePaddings(), is(new String[] {SIGNATURE_PADDING}));
assertThat(spec.getBlockModes(), is(new String[] {BLOCK_MODE}));
assertThat(spec.isRandomizedEncryptionRequired(), is(true));
assertThat(spec.isUserAuthenticationRequired(), is(true));
assertThat(
spec.getUserAuthenticationValidityDurationSeconds(),
is(USER_AUTHENTICATION_DURATION));
assertThat(spec.getAttestationChallenge(), is(ATTESTATION_CHALLENGE));
assertThat(spec.isUniqueIdIncluded(), is(true));
assertThat(spec.isUserAuthenticationValidWhileOnBody(), is(true));
assertThat(spec.isInvalidatedByBiometricEnrollment(), is(true));
}
private Parcel parcelForReading(ParcelableKeyGenParameterSpec spec) {
Parcel parcel = Parcel.obtain();
spec.writeToParcel(parcel, spec.describeContents());
parcel.setDataPosition(0);
return parcel;
}
@Test
public void testParcelingWithAllValues() {
ParcelableKeyGenParameterSpec spec =
new ParcelableKeyGenParameterSpec(configureDefaultSpec());
Parcel parcel = parcelForReading(spec);
ParcelableKeyGenParameterSpec fromParcel =
ParcelableKeyGenParameterSpec.CREATOR.createFromParcel(parcel);
validateSpecValues(fromParcel.getSpec(), UID, ALIAS);
assertThat(parcel.dataAvail(), is(0));
}
@Test
public void testParcelingWithNullValues() {
ParcelableKeyGenParameterSpec spec = new ParcelableKeyGenParameterSpec(
new KeyGenParameterSpec.Builder(ALIAS, KEY_PURPOSES).build());
Parcel parcel = parcelForReading(spec);
KeyGenParameterSpec fromParcel = ParcelableKeyGenParameterSpec.CREATOR
.createFromParcel(parcel)
.getSpec();
assertThat(fromParcel.getKeystoreAlias(), is(ALIAS));
assertThat(fromParcel.getPurposes(), is(KEY_PURPOSES));
assertThat(fromParcel.getCertificateNotBefore(), is(new Date(0L)));
assertThat(fromParcel.getCertificateNotAfter(), is(new Date(2461449600000L)));
assertThat(parcel.dataAvail(), is(0));
}
@Test
public void testParcelingRSAAlgoParameter() {
RSAKeyGenParameterSpec rsaSpec =
new RSAKeyGenParameterSpec(2048, new BigInteger("5231123"));
ParcelableKeyGenParameterSpec spec = new ParcelableKeyGenParameterSpec(
new KeyGenParameterSpec.Builder(ALIAS, KEY_PURPOSES)
.setAlgorithmParameterSpec(rsaSpec)
.build());
Parcel parcel = parcelForReading(spec);
KeyGenParameterSpec fromParcel =
ParcelableKeyGenParameterSpec.CREATOR.createFromParcel(parcel).getSpec();
RSAKeyGenParameterSpec parcelSpec =
(RSAKeyGenParameterSpec) fromParcel.getAlgorithmParameterSpec();
// Compare individual fields as RSAKeyGenParameterSpec, on android, does not
// implement equals()
assertEquals(parcelSpec.getKeysize(), rsaSpec.getKeysize());
assertEquals(parcelSpec.getPublicExponent(), rsaSpec.getPublicExponent());
}
@Test
public void testParcelingECAlgoParameter() {
ECGenParameterSpec ecSpec = new ECGenParameterSpec("P-256");
ParcelableKeyGenParameterSpec spec = new ParcelableKeyGenParameterSpec(
new KeyGenParameterSpec.Builder(ALIAS, KEY_PURPOSES)
.setAlgorithmParameterSpec(ecSpec)
.build());
Parcel parcel = parcelForReading(spec);
KeyGenParameterSpec fromParcel =
ParcelableKeyGenParameterSpec.CREATOR.createFromParcel(parcel).getSpec();
// Compare individual fields as ECGenParameterSpec, on android, does not
// implement equals()
ECGenParameterSpec parcelSpec = (ECGenParameterSpec) fromParcel.getAlgorithmParameterSpec();
assertEquals(parcelSpec.getName(), ecSpec.getName());
}
}
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