| /* |
| * 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.KeyProperties; |
| import android.system.keystore2.KeyDescriptor; |
| import android.system.keystore2.KeyMetadata; |
| |
| import java.math.BigInteger; |
| import java.security.interfaces.RSAPublicKey; |
| |
| /** |
| * {@link RSAPublicKey} backed by Android Keystore. |
| * |
| * @hide |
| */ |
| public class AndroidKeyStoreRSAPublicKey extends AndroidKeyStorePublicKey implements RSAPublicKey { |
| private final BigInteger mModulus; |
| private final BigInteger mPublicExponent; |
| |
| public AndroidKeyStoreRSAPublicKey(@NonNull KeyDescriptor descriptor, |
| @NonNull KeyMetadata metadata, |
| @NonNull KeyStoreSecurityLevel securityLevel, @NonNull BigInteger modulus, |
| @NonNull BigInteger publicExponent) { |
| super(descriptor, metadata, KeyProperties.KEY_ALGORITHM_RSA, securityLevel); |
| mModulus = modulus; |
| mPublicExponent = publicExponent; |
| } |
| |
| public AndroidKeyStoreRSAPublicKey(@NonNull KeyDescriptor descriptor, |
| @NonNull KeyMetadata metadata, |
| @NonNull KeyStoreSecurityLevel securityLevel, @NonNull RSAPublicKey info) { |
| this(descriptor, metadata, securityLevel, info.getModulus(), info.getPublicExponent()); |
| if (!"X.509".equalsIgnoreCase(info.getFormat())) { |
| throw new IllegalArgumentException( |
| "Unsupported key export format: " + info.getFormat()); |
| } |
| } |
| |
| @Override |
| public AndroidKeyStorePrivateKey getPrivateKey() { |
| return new AndroidKeyStoreRSAPrivateKey(getUserKeyDescriptor(), getKeyIdDescriptor().nspace, |
| getAuthorizations(), getSecurityLevel(), mModulus); |
| } |
| |
| @Override |
| public BigInteger getModulus() { |
| return mModulus; |
| } |
| |
| @Override |
| public BigInteger getPublicExponent() { |
| return mPublicExponent; |
| } |
| } |