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Diffstat (limited to 'libjava/classpath/gnu/java/security/sig/SignatureCodecFactory.java')
| -rw-r--r-- | libjava/classpath/gnu/java/security/sig/SignatureCodecFactory.java | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/libjava/classpath/gnu/java/security/sig/SignatureCodecFactory.java b/libjava/classpath/gnu/java/security/sig/SignatureCodecFactory.java deleted file mode 100644 index 0026ad1646a..00000000000 --- a/libjava/classpath/gnu/java/security/sig/SignatureCodecFactory.java +++ /dev/null @@ -1,226 +0,0 @@ -/* SignatureCodecFactory.java -- Factory to instantiate Signature codecs - Copyright (C) 2006 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 gnu.java.security.sig; - -import gnu.java.security.Registry; -import gnu.java.security.hash.HashFactory; -import gnu.java.security.sig.dss.DSSSignatureRawCodec; -import gnu.java.security.sig.dss.DSSSignatureX509Codec; -import gnu.java.security.sig.rsa.RSAPKCS1V1_5SignatureRawCodec; -import gnu.java.security.sig.rsa.RSAPKCS1V1_5SignatureX509Codec; -import gnu.java.security.sig.rsa.RSAPSSSignatureRawCodec; -import gnu.java.security.util.FormatUtil; - -import java.util.Collections; -import java.util.HashSet; -import java.util.Iterator; -import java.util.Set; - -/** - * A <i>Factory</i> class to instantiate Signature codecs. - */ -public class SignatureCodecFactory -{ - private static Set names; - - /** Trivial constructor to enforce Singleton pattern. */ - private SignatureCodecFactory() - { - super(); - } - - /** - * Returns the appropriate codec given a composed signature algorithm and an - * encoding format. A composed name is formed by the concatenation of the - * canonical signature algorithm name, the forward slash character - * <code>/</code> and the canonical name of the encoding format. - * <p> - * When the encoding format name is missing, the Raw encoding format is - * assumed. When this is the case the trailing forward slash is discarded from - * the name. - * - * @param name the case-insensitive, possibly composed, signature codec name. - * @return an instance of the signaturecodec, or <code>null</code> if none - * found. - */ - public static ISignatureCodec getInstance(String name) - { - if (name == null) - return null; - - name = name.trim(); - if (name.length() == 0) - return null; - - if (name.startsWith("/")) - return null; - - if (name.endsWith("/")) - return getInstance(name.substring(0, name.length() - 1), - Registry.RAW_ENCODING_ID); - - int i = name.indexOf("/"); - if (i == - 1) - return getInstance(name, Registry.RAW_ENCODING_ID); - - String sigName = name.substring(0, i); - String formatName = name.substring(i + 1); - return getInstance(sigName, formatName); - } - - /** - * Returns an instance of a signature codec given the canonical name of the - * signature algorithm, and that of the encoding format. - * - * @param name the case-insensitive signature algorithm name. - * @param format the name of the format to use when encodigng/decoding - * signatures generated by the named algorithm. - * @return an instance of the signature codec, or <code>null</code> if none - * found. - */ - public static ISignatureCodec getInstance(String name, String format) - { - int formatID = FormatUtil.getFormatID(format); - if (formatID == 0) - return null; - - return getInstance(name, formatID); - } - - /** - * Returns an instance of a signature codec given the canonical name of the - * signature algorithm, and the identifier of the format to use when - * encoding/decoding signatures generated by that algorithm. - * - * @param name the case-insensitive signature algorithm name. - * @param formatID the identifier of the format to use when encoding / - * decoding signatures generated by the designated algorithm. - * @return an instance of the signature codec, or <code>null</code> if none - * found. - */ - public static ISignatureCodec getInstance(String name, int formatID) - { - if (name == null) - return null; - - name = name.trim(); - switch (formatID) - { - case Registry.RAW_ENCODING_ID: - return getRawCodec(name); - case Registry.X509_ENCODING_ID: - return getX509Codec(name); - } - - return null; - } - - /** - * Returns a {@link Set} of supported signature codec names. - * - * @return a {@link Set} of the names of supported signature codec (Strings). - */ - public static synchronized final Set getNames() - { - if (names == null) - { - HashSet hs = new HashSet(); - hs.add(Registry.DSS_SIG + "/" + Registry.RAW_ENCODING_SHORT_NAME); - hs.add(Registry.DSS_SIG + "/" + Registry.X509_ENCODING_SORT_NAME); - Set hashNames = HashFactory.getNames(); - for (Iterator it = hashNames.iterator(); it.hasNext();) - { - String mdName = (String) it.next(); - String name = Registry.RSA_PKCS1_V1_5_SIG + "-" + mdName; - hs.add(name + "/" + Registry.RAW_ENCODING_SHORT_NAME); - hs.add(name + "/" + Registry.X509_ENCODING_SORT_NAME); - name = Registry.RSA_PSS_SIG + "-" + mdName; - hs.add(name + "/" + Registry.RAW_ENCODING_SHORT_NAME); - } - - names = Collections.unmodifiableSet(hs); - } - - return names; - } - - /** - * @param name the trimmed name of a signature algorithm. - * @return a Raw format codec for the designated signature algorithm, or - * <code>null</code> if none exists. - */ - private static ISignatureCodec getRawCodec(String name) - { - ISignatureCodec result = null; - if (name.equalsIgnoreCase(Registry.DSA_SIG) - || name.equalsIgnoreCase(Registry.DSS_SIG)) - result = new DSSSignatureRawCodec(); - else - { - name = name.toLowerCase(); - if (name.startsWith(Registry.RSA_PKCS1_V1_5_SIG)) - result = new RSAPKCS1V1_5SignatureRawCodec(); - else if (name.startsWith(Registry.RSA_PSS_SIG)) - result = new RSAPSSSignatureRawCodec(); - } - - return result; - } - - /** - * @param name the trimmed name of a signature algorithm. - * @return a X.509 format codec for the designated signature algorithm, or - * <code>null</code> if none exists. - */ - private static ISignatureCodec getX509Codec(String name) - { - ISignatureCodec result = null; - if (name.equalsIgnoreCase(Registry.DSA_SIG) - || name.equalsIgnoreCase(Registry.DSS_SIG)) - result = new DSSSignatureX509Codec(); - else - { - name = name.toLowerCase(); - if (name.startsWith(Registry.RSA_PKCS1_V1_5_SIG)) - result = new RSAPKCS1V1_5SignatureX509Codec(); - } - - return result; - } -} |