diff options
Diffstat (limited to 'gnu/javax/crypto/key/KeyAgreementFactory.java')
| -rw-r--r-- | gnu/javax/crypto/key/KeyAgreementFactory.java | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/gnu/javax/crypto/key/KeyAgreementFactory.java b/gnu/javax/crypto/key/KeyAgreementFactory.java new file mode 100644 index 000000000..e2a7faba1 --- /dev/null +++ b/gnu/javax/crypto/key/KeyAgreementFactory.java @@ -0,0 +1,181 @@ +/* KeyAgreementFactory.java -- + Copyright (C) 2003, 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.javax.crypto.key; + +import gnu.java.security.Registry; + +import gnu.javax.crypto.key.dh.DiffieHellmanSender; +import gnu.javax.crypto.key.dh.DiffieHellmanReceiver; +import gnu.javax.crypto.key.dh.ElGamalSender; +import gnu.javax.crypto.key.dh.ElGamalReceiver; +import gnu.javax.crypto.key.srp6.SRP6Host; +import gnu.javax.crypto.key.srp6.SRP6User; +import gnu.javax.crypto.key.srp6.SRP6SaslClient; +import gnu.javax.crypto.key.srp6.SRP6SaslServer; +import gnu.javax.crypto.key.srp6.SRP6TLSClient; +import gnu.javax.crypto.key.srp6.SRP6TLSServer; + +import java.util.Collections; +import java.util.HashSet; +import java.util.Set; + +/** + * <p>A <i>Factory</i> class to generate key agreement protocol handlers.</p> + */ +public class KeyAgreementFactory +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + // Constructor(s) + // ------------------------------------------------------------------------- + + /** Trivial constructor to enforce <i>Singleton</i> pattern. */ + private KeyAgreementFactory() + { + super(); + } + + // Class methods + // ------------------------------------------------------------------------- + + /** + * <p>Returns an instance of a key agreeent protocol handler, for party + * <code>A</code> in a two-party <code>A..B</code> exchange, given the + * canonical name of this protocol. Party <code>A</code> is usually the + * initiator of the exchange.</p> + * + * @param name the case-insensitive key agreement protocol name. + * @return an instance of the key agreement protocol handler for party + * <code>A</code>, or <code>null</code> if none found. + */ + public static IKeyAgreementParty getPartyAInstance(String name) + { + if (name == null) + { + return null; + } + + name = name.trim(); + IKeyAgreementParty result = null; + if (name.equalsIgnoreCase(Registry.DH_KA)) + { + result = new DiffieHellmanSender(); + } + else if (name.equalsIgnoreCase(Registry.ELGAMAL_KA)) + { + result = new ElGamalSender(); + } + else if (name.equalsIgnoreCase(Registry.SRP6_KA)) + { + result = new SRP6User(); + } + else if (name.equalsIgnoreCase(Registry.SRP_SASL_KA)) + { + result = new SRP6SaslClient(); + } + else if (name.equalsIgnoreCase(Registry.SRP_TLS_KA)) + { + result = new SRP6TLSClient(); + } + + return result; + } + + /** + * <p>Returns an instance of a key agreeent protocol handler, for party + * <code>B</code> in a two-party <code>A..B</code> exchange, given the + * canonical name of this protocol.</p> + * + * @param name the case-insensitive key agreement protocol name. + * @return an instance of the key agreement protocol handler for party + * <code>B</code>, or <code>null</code> if none found. + */ + public static IKeyAgreementParty getPartyBInstance(String name) + { + if (name == null) + { + return null; + } + + name = name.trim(); + IKeyAgreementParty result = null; + if (name.equalsIgnoreCase(Registry.DH_KA)) + { + result = new DiffieHellmanReceiver(); + } + else if (name.equalsIgnoreCase(Registry.ELGAMAL_KA)) + { + result = new ElGamalReceiver(); + } + else if (name.equalsIgnoreCase(Registry.SRP6_KA)) + { + result = new SRP6Host(); + } + else if (name.equalsIgnoreCase(Registry.SRP_SASL_KA)) + { + result = new SRP6SaslServer(); + } + else if (name.equalsIgnoreCase(Registry.SRP_TLS_KA)) + { + result = new SRP6TLSServer(); + } + + return result; + } + + /** + * <p>Returns a {@link Set} of key agreement protocol names supported by this + * <i>Factory</i>.</p> + * + * @return a {@link Set} of key agreement protocol names (Strings). + */ + public static final Set getNames() + { + HashSet hs = new HashSet(); + hs.add(Registry.DH_KA); + hs.add(Registry.ELGAMAL_KA); + hs.add(Registry.SRP6_KA); + hs.add(Registry.SRP_SASL_KA); + hs.add(Registry.SRP_TLS_KA); + + return Collections.unmodifiableSet(hs); + } +}
\ No newline at end of file |