| /* |
| * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.mscapi; |
| |
| import java.util.UUID; |
| import java.security.*; |
| import java.security.spec.AlgorithmParameterSpec; |
| import java.security.spec.RSAKeyGenParameterSpec; |
| |
| import sun.security.rsa.RSAKeyFactory; |
| |
| /** |
| * RSA keypair generator. |
| * |
| * Standard algorithm, minimum key length is 512 bit, maximum is 16,384. |
| * Generates a private key that is exportable. |
| * |
| * @since 1.6 |
| */ |
| public final class RSAKeyPairGenerator extends KeyPairGeneratorSpi { |
| |
| // Supported by Microsoft Base, Strong and Enhanced Cryptographic Providers |
| static final int KEY_SIZE_MIN = 512; // disallow MSCAPI min. of 384 |
| static final int KEY_SIZE_MAX = 16384; |
| private static final int KEY_SIZE_DEFAULT = 2048; |
| |
| // size of the key to generate, KEY_SIZE_MIN <= keySize <= KEY_SIZE_MAX |
| private int keySize; |
| |
| public RSAKeyPairGenerator() { |
| // initialize to default in case the app does not call initialize() |
| initialize(KEY_SIZE_DEFAULT, null); |
| } |
| |
| // initialize the generator. See JCA doc |
| // random is always ignored |
| public void initialize(int keySize, SecureRandom random) { |
| |
| try { |
| RSAKeyFactory.checkKeyLengths(keySize, null, |
| KEY_SIZE_MIN, KEY_SIZE_MAX); |
| } catch (InvalidKeyException e) { |
| throw new InvalidParameterException(e.getMessage()); |
| } |
| |
| this.keySize = keySize; |
| } |
| |
| // second initialize method. See JCA doc |
| // random and exponent are always ignored |
| public void initialize(AlgorithmParameterSpec params, SecureRandom random) |
| throws InvalidAlgorithmParameterException { |
| |
| int tmpSize; |
| if (params == null) { |
| tmpSize = KEY_SIZE_DEFAULT; |
| } else if (params instanceof RSAKeyGenParameterSpec) { |
| |
| if (((RSAKeyGenParameterSpec) params).getPublicExponent() != null) { |
| throw new InvalidAlgorithmParameterException |
| ("Exponent parameter is not supported"); |
| } |
| tmpSize = ((RSAKeyGenParameterSpec) params).getKeysize(); |
| |
| } else { |
| throw new InvalidAlgorithmParameterException |
| ("Params must be an instance of RSAKeyGenParameterSpec"); |
| } |
| |
| try { |
| RSAKeyFactory.checkKeyLengths(tmpSize, null, |
| KEY_SIZE_MIN, KEY_SIZE_MAX); |
| } catch (InvalidKeyException e) { |
| throw new InvalidAlgorithmParameterException( |
| "Invalid Key sizes", e); |
| } |
| |
| this.keySize = tmpSize; |
| } |
| |
| // generate the keypair. See JCA doc |
| public KeyPair generateKeyPair() { |
| |
| try { |
| |
| // Generate each keypair in a unique key container |
| RSAKeyPair keys = |
| generateRSAKeyPair(keySize, |
| "{" + UUID.randomUUID().toString() + "}"); |
| |
| return new KeyPair(keys.getPublic(), keys.getPrivate()); |
| |
| } catch (KeyException e) { |
| throw new ProviderException(e); |
| } |
| } |
| |
| private static native RSAKeyPair generateRSAKeyPair(int keySize, |
| String keyContainerName) throws KeyException; |
| } |