diff options
| author | Tom Tromey <tromey@gcc.gnu.org> | 2005-07-16 00:30:23 +0000 |
|---|---|---|
| committer | Tom Tromey <tromey@gcc.gnu.org> | 2005-07-16 00:30:23 +0000 |
| commit | f911ba985aa7fe0096c386c5be385ac5825ea527 (patch) | |
| tree | a0b991cf5866ae1d616639b906ac001811d74508 /libjava/classpath/java/security/KeyFactorySpi.java | |
| parent | 6f4434b39b261de5317dc81ddfdd94d2e1d62b11 (diff) | |
| download | gcc-f911ba985aa7fe0096c386c5be385ac5825ea527.zip gcc-f911ba985aa7fe0096c386c5be385ac5825ea527.tar.gz gcc-f911ba985aa7fe0096c386c5be385ac5825ea527.tar.bz2 | |
Initial revision
From-SVN: r102074
Diffstat (limited to 'libjava/classpath/java/security/KeyFactorySpi.java')
| -rw-r--r-- | libjava/classpath/java/security/KeyFactorySpi.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/libjava/classpath/java/security/KeyFactorySpi.java b/libjava/classpath/java/security/KeyFactorySpi.java new file mode 100644 index 0000000..1894fad0 --- /dev/null +++ b/libjava/classpath/java/security/KeyFactorySpi.java @@ -0,0 +1,133 @@ +/* KeyFactorySpi.java --- Key Factory Service Provider Interface + Copyright (C) 1999, 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., 51 Franklin Street, 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 java.security; + +import java.security.spec.InvalidKeySpecException; +import java.security.spec.KeySpec; + +/** + * KeyFactorySpi is the Service Provider Interface (SPI) for the + * KeyFactory class. This is the interface for providers to + * supply to implement a key factory for an algorithm. + * + * Key factories are used to convert keys (opaque cryptographic + * keys of type Key) into key specifications (transparent + * representations of the underlying key material). + * + * Key factories are bi-directional. They allow a key class + * to be converted into a key specification (key material) and + * back again. + * + * For example DSA public keys can be specified as + * DSAPublicKeySpec or X509EncodedKeySpec. The key factory + * translate these key specifications. + * + * @since JDK 1.2 + * @author Mark Benvenuto + */ +public abstract class KeyFactorySpi +{ + /** + * Constucts a new KeyFactorySpi. + */ + public KeyFactorySpi() + { + } + + /** + * Generates a public key from the provided key specification. + * + * @param keySpec key specification + * + * @return the public key + * + * @throws InvalidKeySpecException invalid key specification for + * this key factory to produce a public key + */ + protected abstract PublicKey engineGeneratePublic(KeySpec keySpec) + throws InvalidKeySpecException; + + + /** + * Generates a private key from the provided key specification. + * + * @param keySpec key specification + * + * @return the private key + * + * @throws InvalidKeySpecException invalid key specification for + * this key factory to produce a private key + */ + protected abstract PrivateKey engineGeneratePrivate(KeySpec keySpec) + throws InvalidKeySpecException; + + /** + * Returns a key specification for the given key. keySpec + * identifies the specification class to return the key + * material in. + * + * @param key the key + * @param keySpec the specification class to return the + * key material in. + * + * @return the key specification in an instance of the requested + * specification class + * + * @throws InvalidKeySpecException the requested key specification + * is inappropriate for this key or the key is + * unrecognized. + */ + protected abstract KeySpec engineGetKeySpec(Key key, Class keySpec) + throws InvalidKeySpecException; + + + /** + * Translates the key from an unknown or untrusted provider + * into a key for this key factory. + * + * @param the key from an unknown or untrusted provider + * + * @return the translated key + * + * @throws InvalidKeySpecException if the key cannot be + * processed by this key factory + */ + protected abstract Key engineTranslateKey(Key key) + throws InvalidKeyException; +} |