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/*
* Copyright (C) 2015 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.keystore2;
import android.annotation.NonNull;
import android.security.KeyStoreSecurityLevel;
import android.security.keystore.ArrayUtils;
import android.system.keystore2.KeyDescriptor;
import android.system.keystore2.KeyMetadata;
import java.security.PublicKey;
import java.util.Arrays;
/**
* {@link PublicKey} backed by Android Keystore.
*
* @hide
*/
public abstract class AndroidKeyStorePublicKey extends AndroidKeyStoreKey implements PublicKey {
private final byte[] mCertificate;
private final byte[] mCertificateChain;
private final byte[] mEncoded;
public AndroidKeyStorePublicKey(@NonNull KeyDescriptor descriptor,
@NonNull KeyMetadata metadata, @NonNull byte[] x509EncodedForm,
@NonNull String algorithm, @NonNull KeyStoreSecurityLevel securityLevel) {
super(descriptor, metadata.key.nspace, metadata.authorizations, algorithm, securityLevel);
mCertificate = metadata.certificate;
mCertificateChain = metadata.certificateChain;
mEncoded = x509EncodedForm;
}
abstract AndroidKeyStorePrivateKey getPrivateKey();
@Override
public String getFormat() {
return "X.509";
}
@Override
public byte[] getEncoded() {
return ArrayUtils.cloneIfNotEmpty(mEncoded);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + super.hashCode();
result = prime * result + Arrays.hashCode(mCertificate);
result = prime * result + Arrays.hashCode(mCertificateChain);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!super.equals(obj)) {
return false;
}
/*
* getClass().equals(ojb.getClass()) is implied by the call to super.equals() above. This
* means we can cast obj to AndroidKeyStorePublicKey here.
*/
final AndroidKeyStorePublicKey other = (AndroidKeyStorePublicKey) obj;
return Arrays.equals(mCertificate, other.mCertificate) && Arrays.equals(mCertificateChain,
other.mCertificateChain);
}
}
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