| /* RSAKeyFactory.java -- RSA key factory. |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is 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, 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; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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.provider; |
| |
| import java.security.InvalidKeyException; |
| import java.security.Key; |
| import java.security.KeyFactorySpi; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| |
| import java.security.interfaces.RSAPrivateCrtKey; |
| import java.security.interfaces.RSAPrivateKey; |
| import java.security.interfaces.RSAPublicKey; |
| |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.KeySpec; |
| import java.security.spec.PKCS8EncodedKeySpec; |
| import java.security.spec.RSAPrivateCrtKeySpec; |
| import java.security.spec.RSAPrivateKeySpec; |
| import java.security.spec.RSAPublicKeySpec; |
| import java.security.spec.X509EncodedKeySpec; |
| |
| public class RSAKeyFactory extends KeyFactorySpi |
| { |
| |
| // Default constructor. |
| // ------------------------------------------------------------------------- |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| protected PrivateKey engineGeneratePrivate(KeySpec spec) |
| throws InvalidKeySpecException |
| { |
| if (spec instanceof RSAPrivateCrtKeySpec) |
| { |
| return new GnuRSAPrivateKey((RSAPrivateCrtKeySpec) spec); |
| } |
| if (spec instanceof RSAPrivateKeySpec) |
| { |
| return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec( |
| ((RSAPrivateKeySpec) spec).getModulus(), null, |
| ((RSAPrivateKeySpec) spec).getPrivateExponent(), null, |
| null, null, null, null)); |
| } |
| if (spec instanceof PKCS8EncodedKeySpec) |
| { |
| EncodedKeyFactory ekf = new EncodedKeyFactory(); |
| PrivateKey pk = ekf.engineGeneratePrivate(spec); |
| if (pk instanceof RSAPrivateKey) |
| return pk; |
| } |
| throw new InvalidKeySpecException(); |
| } |
| |
| protected PublicKey engineGeneratePublic(KeySpec spec) |
| throws InvalidKeySpecException |
| { |
| if (spec instanceof RSAPublicKeySpec) |
| { |
| return new GnuRSAPublicKey((RSAPublicKeySpec) spec); |
| } |
| if (spec instanceof X509EncodedKeySpec) |
| { |
| EncodedKeyFactory ekf = new EncodedKeyFactory(); |
| PublicKey pk = ekf.engineGeneratePublic(spec); |
| if (pk instanceof RSAPublicKey) |
| return pk; |
| } |
| throw new InvalidKeySpecException(); |
| } |
| |
| protected KeySpec engineGetKeySpec(Key key, Class keySpec) |
| throws InvalidKeySpecException |
| { |
| if (keySpec.isAssignableFrom(RSAPrivateCrtKeySpec.class) |
| && (key instanceof RSAPrivateCrtKey)) |
| { |
| return new RSAPrivateCrtKeySpec( |
| ((RSAPrivateCrtKey) key).getModulus(), |
| ((RSAPrivateCrtKey) key).getPublicExponent(), |
| ((RSAPrivateCrtKey) key).getPrivateExponent(), |
| ((RSAPrivateCrtKey) key).getPrimeP(), |
| ((RSAPrivateCrtKey) key).getPrimeQ(), |
| ((RSAPrivateCrtKey) key).getPrimeExponentP(), |
| ((RSAPrivateCrtKey) key).getPrimeExponentQ(), |
| ((RSAPrivateCrtKey) key).getCrtCoefficient()); |
| } |
| if (keySpec.isAssignableFrom(RSAPrivateKeySpec.class) |
| && (key instanceof RSAPrivateKey)) |
| { |
| return new RSAPrivateKeySpec( |
| ((RSAPrivateCrtKey) key).getModulus(), |
| ((RSAPrivateCrtKey) key).getPrivateExponent()); |
| } |
| if (keySpec.isAssignableFrom(RSAPublicKeySpec.class) |
| && (key instanceof RSAPublicKey)) |
| { |
| return new RSAPublicKeySpec( |
| ((RSAPrivateCrtKey) key).getModulus(), |
| ((RSAPrivateCrtKey) key).getPublicExponent()); |
| } |
| if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class) |
| && key.getFormat().equalsIgnoreCase("PKCS#8")) |
| { |
| return new PKCS8EncodedKeySpec(key.getEncoded()); |
| } |
| if (keySpec.isAssignableFrom(X509EncodedKeySpec.class) |
| && key.getFormat().equalsIgnoreCase("X.509")) |
| { |
| return new X509EncodedKeySpec(key.getEncoded()); |
| } |
| throw new InvalidKeySpecException(); |
| } |
| |
| protected Key engineTranslateKey(Key key) throws InvalidKeyException |
| { |
| if (key instanceof RSAPrivateCrtKey) |
| { |
| return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec( |
| ((RSAPrivateCrtKey) key).getModulus(), |
| ((RSAPrivateCrtKey) key).getPublicExponent(), |
| ((RSAPrivateCrtKey) key).getPrivateExponent(), |
| ((RSAPrivateCrtKey) key).getPrimeP(), |
| ((RSAPrivateCrtKey) key).getPrimeQ(), |
| ((RSAPrivateCrtKey) key).getPrimeExponentP(), |
| ((RSAPrivateCrtKey) key).getPrimeExponentQ(), |
| ((RSAPrivateCrtKey) key).getCrtCoefficient())); |
| } |
| if (key instanceof RSAPrivateKey) |
| { |
| return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec( |
| ((RSAPrivateKey) key).getModulus(), null, |
| ((RSAPrivateKey) key).getPrivateExponent(), null, |
| null, null, null, null)); |
| } |
| if (key instanceof RSAPublicKey) |
| { |
| return new GnuRSAPublicKey(new RSAPublicKeySpec( |
| ((RSAPrivateCrtKey) key).getModulus(), |
| ((RSAPrivateCrtKey) key).getPublicExponent())); |
| } |
| throw new InvalidKeyException(); |
| } |
| } |