| /* DSSKeyPairGeneratorSpi.java -- |
| Copyright 2001, 2002, 2006 Free Software Foundation, Inc. |
| |
| This file is a part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 |
| USA |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.security.jce.sig; |
| |
| import gnu.java.security.Registry; |
| import gnu.java.security.key.dss.DSSKeyPairGenerator; |
| |
| import java.security.InvalidAlgorithmParameterException; |
| import java.security.InvalidParameterException; |
| import java.security.SecureRandom; |
| import java.security.interfaces.DSAKeyPairGenerator; |
| import java.security.interfaces.DSAParams; |
| import java.security.spec.AlgorithmParameterSpec; |
| import java.security.spec.DSAParameterSpec; |
| import java.util.HashMap; |
| |
| /** |
| * The implementation of a {@link java.security.KeyPairGenerator} adapter class |
| * to wrap GNU DSS keypair generator instances. |
| * <p> |
| * In case the client does not explicitly initialize the KeyPairGenerator (via a |
| * call to an <code>initialize()</code> method), the GNU provider uses a |
| * default <i>modulus</i> size (keysize) of 1024 bits. |
| */ |
| public class DSSKeyPairGeneratorSpi |
| extends KeyPairGeneratorAdapter |
| implements DSAKeyPairGenerator |
| { |
| public DSSKeyPairGeneratorSpi() |
| { |
| super(Registry.DSS_KPG); |
| } |
| |
| public void initialize(int keysize, SecureRandom random) |
| { |
| this.initialize(keysize, false, random); |
| } |
| |
| public void initialize(AlgorithmParameterSpec params, SecureRandom random) |
| throws InvalidAlgorithmParameterException |
| { |
| HashMap attributes = new HashMap(); |
| if (params != null) |
| { |
| if (! (params instanceof DSAParameterSpec)) |
| throw new InvalidAlgorithmParameterException( |
| "Parameters argument is not a non-null instance, or " |
| + "sub-instance, of java.security.spec.DSAParameterSpec"); |
| attributes.put(DSSKeyPairGenerator.DSS_PARAMETERS, params); |
| } |
| if (random != null) |
| attributes.put(DSSKeyPairGenerator.SOURCE_OF_RANDOMNESS, random); |
| |
| attributes.put(DSSKeyPairGenerator.PREFERRED_ENCODING_FORMAT, |
| Integer.valueOf(Registry.ASN1_ENCODING_ID)); |
| try |
| { |
| adaptee.setup(attributes); |
| } |
| catch (IllegalArgumentException x) |
| { |
| throw new InvalidAlgorithmParameterException(x.getMessage(), x); |
| } |
| } |
| |
| public void initialize(DSAParams params, SecureRandom random) |
| throws InvalidParameterException |
| { |
| if (params == null || !(params instanceof DSAParameterSpec)) |
| throw new InvalidParameterException( |
| "Parameters argument is either null or is not an instance, or " |
| + "sub-instance, of java.security.spec.DSAParameterSpec"); |
| DSAParameterSpec spec = (DSAParameterSpec) params; |
| try |
| { |
| this.initialize((AlgorithmParameterSpec) spec, random); |
| } |
| catch (InvalidAlgorithmParameterException x) |
| { |
| InvalidParameterException y = new InvalidParameterException(x.getMessage()); |
| y.initCause(x); |
| throw y; |
| } |
| } |
| |
| public void initialize(int modlen, boolean genParams, SecureRandom random) |
| throws InvalidParameterException |
| { |
| HashMap attributes = new HashMap(); |
| attributes.put(DSSKeyPairGenerator.MODULUS_LENGTH, Integer.valueOf(modlen)); |
| if (random != null) |
| attributes.put(DSSKeyPairGenerator.SOURCE_OF_RANDOMNESS, random); |
| |
| attributes.put(DSSKeyPairGenerator.USE_DEFAULTS, |
| Boolean.valueOf(! genParams)); |
| attributes.put(DSSKeyPairGenerator.STRICT_DEFAULTS, Boolean.TRUE); |
| attributes.put(DSSKeyPairGenerator.PREFERRED_ENCODING_FORMAT, |
| Integer.valueOf(Registry.ASN1_ENCODING_ID)); |
| try |
| { |
| adaptee.setup(attributes); |
| } |
| catch (IllegalArgumentException x) |
| { |
| InvalidParameterException y = new InvalidParameterException(x.getMessage()); |
| y.initCause(x); |
| throw y; |
| } |
| } |
| } |