From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../java/security/AlgorithmParameters.java | 317 +++++++++++++++++++++ 1 file changed, 317 insertions(+) create mode 100644 libjava/classpath/java/security/AlgorithmParameters.java (limited to 'libjava/classpath/java/security/AlgorithmParameters.java') diff --git a/libjava/classpath/java/security/AlgorithmParameters.java b/libjava/classpath/java/security/AlgorithmParameters.java new file mode 100644 index 000000000..ba805143e --- /dev/null +++ b/libjava/classpath/java/security/AlgorithmParameters.java @@ -0,0 +1,317 @@ +/* AlgorithmParameters.java --- Algorithm Parameters Implementation Class + Copyright (C) 1999, 2003, 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 gnu.java.lang.CPStringBuilder; + +import gnu.java.security.Engine; + +import java.io.IOException; +import java.lang.reflect.InvocationTargetException; +import java.security.spec.AlgorithmParameterSpec; +import java.security.spec.InvalidParameterSpecException; + +/** + * AlgorithmParameters is an Algorithm Parameters class which + * provides an interface through which the user can manage the parameters of an + * Algorithm. + * + * @author Mark Benvenuto + * @since 1.2 + * @see AlgorithmParameterSpec + * @see java.security.spec.DSAParameterSpec + * @see KeyPairGenerator + */ +public class AlgorithmParameters +{ + /** Service name for algorithm parameters. */ + private static final String ALGORITHM_PARAMETERS = "AlgorithmParameters"; + + private AlgorithmParametersSpi paramSpi; + private Provider provider; + private String algorithm; + + /** + * Constructs a new instance of AlgorithmParameters. + * + * @param paramSpi + * the engine to use. + * @param provider + * the provider to use. + * @param algorithm + * the algorithm to use. + */ + protected AlgorithmParameters(AlgorithmParametersSpi paramSpi, + Provider provider, String algorithm) + { + this.paramSpi = paramSpi; + this.provider = provider; + this.algorithm = algorithm; + } + + /** @return A string with the name of the algorithm used. */ + public final String getAlgorithm() + { + return algorithm; + } + + /** + * Returns a new instance of AlgorithmParameters representing + * the specified algorithm parameters. + *

+ * The returned AlgorithmParameters must still be initialized + * with an init() method. + * + * @param algorithm the algorithm to use. + * @return the new instance repesenting the desired algorithm. + * @throws NoSuchAlgorithmException if the algorithm is not implemented by any + * provider. + * @throws IllegalArgumentException if algorithm is + * null or is an empty string. + */ + public static AlgorithmParameters getInstance(String algorithm) + throws NoSuchAlgorithmException + { + Provider[] p = Security.getProviders(); + NoSuchAlgorithmException lastException = null; + for (int i = 0; i < p.length; i++) + try + { + return getInstance(algorithm, p[i]); + } + catch (NoSuchAlgorithmException x) + { + lastException = x; + } + if (lastException != null) + throw lastException; + throw new NoSuchAlgorithmException(algorithm); + } + + /** + * Returns a new instance of AlgorithmParameters representing + * the specified algorithm parameters from a named provider. + *

+ * The returned AlgorithmParameters must still be intialized + * with an init() method. + *

+ * + * @param algorithm the algorithm to use. + * @param provider the name of the {@link Provider} to use. + * @return the new instance repesenting the desired algorithm. + * @throws NoSuchAlgorithmException if the algorithm is not implemented by the + * named provider. + * @throws NoSuchProviderException if the named provider was not found. + * @throws IllegalArgumentException if either algorithm or + * provider is null or empty. + */ + public static AlgorithmParameters getInstance(String algorithm, + String provider) + throws NoSuchAlgorithmException, NoSuchProviderException + { + if (provider == null) + throw new IllegalArgumentException("provider MUST NOT be null"); + provider = provider.trim(); + if (provider.length() == 0) + throw new IllegalArgumentException("provider MUST NOT be empty"); + Provider p = Security.getProvider(provider); + if (p == null) + throw new NoSuchProviderException(provider); + return getInstance(algorithm, p); + } + + /** + * Returns a new instance of AlgorithmParameters representing + * the specified algorithm parameters from the specified {@link Provider}. + *

+ * The returned AlgorithmParameters must still be intialized + * with an init() method. + * + * @param algorithm the algorithm to use. + * @param provider the {@link Provider} to use. + * @return the new instance repesenting the desired algorithm. + * @throws NoSuchAlgorithmException if the algorithm is not implemented by the + * {@link Provider}. + * @throws IllegalArgumentException if either algorithm or + * provider is null, or if + * algorithm is an empty string. + * @since 1.4 + */ + public static AlgorithmParameters getInstance(String algorithm, + Provider provider) + throws NoSuchAlgorithmException + { + CPStringBuilder sb = new CPStringBuilder("AlgorithmParameters for algorithm [") + .append(algorithm).append("] from provider[") + .append(provider).append("] could not be created"); + Throwable cause; + try + { + Object spi = Engine.getInstance(ALGORITHM_PARAMETERS, algorithm, provider); + return new AlgorithmParameters((AlgorithmParametersSpi) spi, + provider, + algorithm); + } + catch (InvocationTargetException x) + { + cause = x.getCause(); + if (cause instanceof NoSuchAlgorithmException) + throw (NoSuchAlgorithmException) cause; + if (cause == null) + cause = x; + } + catch (ClassCastException x) + { + cause = x; + } + NoSuchAlgorithmException x = new NoSuchAlgorithmException(sb.toString()); + x.initCause(cause); + throw x; + } + + /** @return the provider of this parameter object. */ + public final Provider getProvider() + { + return provider; + } + + /** + * Initializes the engine with the specified {@link AlgorithmParameterSpec}. + * + * @param paramSpec + * A {@link AlgorithmParameterSpec} to use. + * @throws InvalidParameterSpecException + * if paramSpec is invalid. + */ + public final void init(AlgorithmParameterSpec paramSpec) + throws InvalidParameterSpecException + { + paramSpi.engineInit(paramSpec); + } + + /** + * Initializes the engine with the specified parameters stored in the byte + * array and decodes them according to the ASN.1 specification. If the ASN.1 + * specification exists then it succeeds otherwise an {@link IOException} is + * thrown. + * + * @param params + * the parameters to use. + * @throws IOException + * if a decoding error occurs. + */ + public final void init(byte[]params) throws IOException + { + paramSpi.engineInit(params); + } + + /** + * Initializes the engine with the specified parameters stored in the byte + * array and decodes them according to the specified decoding specification. + * If format is null, then this method decodes the + * byte array using the ASN.1 specification if it exists, otherwise it throws + * an {@link IOException}. + * + * @param params + * the parameters to use. + * @param format + * the name of decoding format to use. + * @throws IOException + * if a decoding error occurs. + */ + public final void init(byte[]params, String format) throws IOException + { + paramSpi.engineInit(params, format); + } + + /** + * Returns a new instance of AlgorithmParameters as a + * designated parameter specification {@link Class}. + * + * @param paramSpec + * the {@link Class} to use. + * @return the parameter specification. + * @throws InvalidParameterSpecException + * if paramSpec is invalid. + */ + public final + T getParameterSpec(Class paramSpec) + throws InvalidParameterSpecException + { + return paramSpi.engineGetParameterSpec(paramSpec); + } + + /** + * Returns the parameters in the default encoding format. The primary encoding + * format is ASN.1 if it exists for the specified type. + * + * @return byte array representing the parameters. + */ + public final byte[] getEncoded() throws IOException + { + return paramSpi.engineGetEncoded(); + } + + /** + * Returns the parameters in the specified encoding format. If + * format is null then the ASN.1 encoding + * format is used if it exists for the specified type. + * + * @param format + * the name of the encoding format to use. + * @return the parameters encoded using the specified encoding scheme. + * @throws IOException + * if an encoding exception occurs, or if this parameter object has + * not been initialized. + */ + public final byte[] getEncoded(String format) throws IOException + { + return paramSpi.engineGetEncoded(format); + } + + /** + * Returns a string representation of the encoded form. + * + * @return a string representation of the encoded form. + */ + public final String toString() + { + return paramSpi.engineToString(); + } +} -- cgit v1.2.3