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Diffstat (limited to 'libjava/javax/crypto/KeyGenerator.java')
| -rw-r--r-- | libjava/javax/crypto/KeyGenerator.java | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/libjava/javax/crypto/KeyGenerator.java b/libjava/javax/crypto/KeyGenerator.java deleted file mode 100644 index c3f4cee9f5c..00000000000 --- a/libjava/javax/crypto/KeyGenerator.java +++ /dev/null @@ -1,283 +0,0 @@ -/* KeyGenerator.java -- Interface to a symmetric key generator. - 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., 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 javax.crypto; - -import gnu.java.security.Engine; - -import java.lang.reflect.InvocationTargetException; -import java.security.InvalidAlgorithmParameterException; -import java.security.NoSuchAlgorithmException; -import java.security.NoSuchProviderException; -import java.security.Provider; -import java.security.SecureRandom; -import java.security.Security; -import java.security.spec.AlgorithmParameterSpec; - -/** - * A generic producer of keys for symmetric cryptography. The keys - * returned may be simple wrappers around byte arrays, or, if the - * target cipher requires them, more complex objects. - * - * @author Casey Marshall (csm@gnu.org) - * @since 1.4 - * @see Cipher - * @see Mac - */ -public class KeyGenerator -{ - - // Constants and fields. - // ------------------------------------------------------------------------ - - private static final String SERVICE = "KeyGenerator"; - - /** The underlying generator implementation. */ - private KeyGeneratorSpi kgSpi; - - /** The provider of the implementation. */ - private Provider provider; - - /** The name of the algorithm. */ - private String algorithm; - - // Constructor. - // ------------------------------------------------------------------------ - - /** - * Create a new key generator. - * - * @param kgSpi The underlying generator. - * @param provider The provider of this implementation. - * @param algorithm The algorithm's name. - */ - protected KeyGenerator(KeyGeneratorSpi kgSpi, Provider provider, - String algorithm) - { - this.kgSpi = kgSpi; - this.provider = provider; - this.algorithm = algorithm; - } - - // Class methods. - // ------------------------------------------------------------------------ - - /** - * Create a new key generator, returning the first available - * implementation. - * - * @param algorithm The generator algorithm name. - * @throws java.security.NoSuchAlgorithmException If the specified - * algorithm does not exist. - */ - public static final KeyGenerator getInstance(String algorithm) - throws NoSuchAlgorithmException - { - Provider[] provs = Security.getProviders(); - String msg = algorithm; - for (int i = 0; i < provs.length; i++) - { - try - { - return getInstance(algorithm, provs[i]); - } - catch (NoSuchAlgorithmException nsae) - { - msg = nsae.getMessage(); - } - } - throw new NoSuchAlgorithmException(msg); - } - - /** - * Create a new key generator from the named provider. - * - * @param algorithm The generator algorithm name. - * @param provider The name of the provider to use. - * @return An appropriate key generator, if found. - * @throws java.security.NoSuchAlgorithmException If the specified - * algorithm is not implemented by the named provider. - * @throws java.security.NoSuchProviderException If the named provider - * does not exist. - */ - public static final KeyGenerator getInstance(String algorithm, String provider) - throws NoSuchAlgorithmException, NoSuchProviderException - { - Provider p = Security.getProvider(provider); - if (p == null) - { - throw new NoSuchProviderException(provider); - } - return getInstance(algorithm, p); - } - - /** - * Create a new key generator from the supplied provider. - * - * @param algorithm The generator algorithm name. - * @param provider The provider to use. - * @return An appropriate key generator, if found. - * @throws java.security.NoSuchAlgorithmException If the specified - * algorithm is not implemented by the provider. - */ - public static final KeyGenerator getInstance(String algorithm, Provider provider) - throws NoSuchAlgorithmException - { - try - { - return new KeyGenerator((KeyGeneratorSpi) - Engine.getInstance(SERVICE, algorithm, provider), - provider, algorithm); - } - catch (InvocationTargetException ite) - { - if (ite.getCause() == null) - throw new NoSuchAlgorithmException(algorithm); - if (ite.getCause() instanceof NoSuchAlgorithmException) - throw (NoSuchAlgorithmException) ite.getCause(); - throw new NoSuchAlgorithmException(algorithm); - } - catch (ClassCastException cce) - { - throw new NoSuchAlgorithmException(algorithm); - } - } - - // Instance methods. - // ------------------------------------------------------------------------ - - /** - * Generate a key. - * - * @return The new key. - */ - public final SecretKey generateKey() - { - return kgSpi.engineGenerateKey(); - } - - /** - * Return the name of this key generator. - * - * @return The algorithm name. - */ - public final String getAlgorithm() - { - return algorithm; - } - - /** - * Return the provider of the underlying implementation. - * - * @return The provider. - */ - public final Provider getProvider() - { - return provider; - } - - /** - * Initialize this key generator with a set of parameters; the - * highest-priority {@link java.security.SecureRandom} implementation - * will be used. - * - * @param params The algorithm parameters. - * @throws java.security.InvalidAlgorithmParameterException If the - * supplied parameters are inapproprate. - */ - public final void init(AlgorithmParameterSpec params) - throws InvalidAlgorithmParameterException - { - init(params, new SecureRandom()); - } - - /** - * Initialize this key generator with a set of parameters and a source - * of randomness. - * - * @param params The algorithm parameters. - * @param random The source of randomness. - * @throws java.security.InvalidAlgorithmParameterException If the - * supplied parameters are inapproprate. - */ - public final void init(AlgorithmParameterSpec params, SecureRandom random) - throws InvalidAlgorithmParameterException - { - kgSpi.engineInit(params, random); - } - - /** - * Initialize this key generator with a key size (in bits); the - * highest-priority {@link java.security.SecureRandom} implementation - * will be used. - * - * @param keySize The target key size, in bits. - * @throws java.security.InvalidParameterException If the - * key size is unsupported. - */ - public final void init(int keySize) - { - init(keySize, new SecureRandom()); - } - - /** - * Initialize this key generator with a key size (in bits) and a - * source of randomness. - * - * @param keySize The target key size, in bits. - * @param random The source of randomness. - * @throws java.security.InvalidAlgorithmParameterException If the - * key size is unsupported. - */ - public final void init(int keySize, SecureRandom random) - { - kgSpi.engineInit(keySize, random); - } - - /** - * Initialize this key generator with a source of randomness. The - * implementation-specific default parameters (such as key size) will - * be used. - * - * @param random The source of randomness. - */ - public final void init(SecureRandom random) - { - kgSpi.engineInit(random); - } -} |
