| /* GENERATED SOURCE. DO NOT MODIFY. */ |
| /* |
| * Copyright (C) 2013 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.org.conscrypt; |
| |
| import java.security.InvalidKeyException; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| |
| /** |
| * Elliptic Curve Diffie-Hellman key agreement backed by the OpenSSL engine. |
| * @hide This class is not part of the Android public SDK API |
| */ |
| @Internal |
| public final class OpenSSLXDHKeyAgreement extends OpenSSLBaseDHKeyAgreement<byte[]> { |
| public OpenSSLXDHKeyAgreement() { |
| } |
| |
| @Override |
| protected byte[] convertPublicKey(PublicKey key) throws InvalidKeyException { |
| if (!(key instanceof OpenSSLX25519PublicKey)) { |
| throw new InvalidKeyException("Only OpenSSLX25519PublicKey accepted"); |
| } |
| |
| return ((OpenSSLX25519PublicKey) key).getU(); |
| } |
| |
| @Override |
| protected byte[] convertPrivateKey(PrivateKey key) throws InvalidKeyException { |
| if (!(key instanceof OpenSSLX25519PrivateKey)) { |
| throw new InvalidKeyException("Only OpenSSLX25519PublicKey accepted"); |
| } |
| |
| return ((OpenSSLX25519PrivateKey) key).getU(); |
| } |
| |
| @Override |
| protected int computeKey(byte[] buffer, byte[] theirPublicKey, byte[] ourPrivateKey) throws InvalidKeyException { |
| if (!NativeCrypto.X25519( |
| buffer, |
| ourPrivateKey, |
| theirPublicKey)) { |
| throw new InvalidKeyException("Error running X25519"); |
| } |
| |
| return OpenSSLX25519Key.X25519_KEY_SIZE_BYTES; |
| } |
| |
| @Override |
| protected int getOutputSize(byte[] key) { |
| // We only support X25519 which is 32-byte (256-bit) |
| return OpenSSLX25519Key.X25519_KEY_SIZE_BYTES; |
| } |
| } |