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. --- .../gnu/java/security/key/dss/DSSKey.java | 213 +++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 libjava/classpath/gnu/java/security/key/dss/DSSKey.java (limited to 'libjava/classpath/gnu/java/security/key/dss/DSSKey.java') diff --git a/libjava/classpath/gnu/java/security/key/dss/DSSKey.java b/libjava/classpath/gnu/java/security/key/dss/DSSKey.java new file mode 100644 index 000000000..49f229f7b --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/dss/DSSKey.java @@ -0,0 +1,213 @@ +/* DSSKey.java -- + Copyright 2001, 2002, 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.java.security.key.dss; + +import gnu.java.lang.CPStringBuilder; + +import gnu.java.security.Registry; +import gnu.java.security.action.GetPropertyAction; +import gnu.java.security.util.FormatUtil; + +import java.math.BigInteger; +import java.security.AccessController; +import java.security.Key; +import java.security.interfaces.DSAKey; +import java.security.interfaces.DSAParams; +import java.security.spec.DSAParameterSpec; + +/** + * A base asbtract class for both public and private DSS (Digital Signature + * Standard) keys. It encapsulates the three DSS numbers: p, + * q and g. + *

+ * According to the JDK, cryptographic Keys all have a format. + * The format used in this implementation is called Raw, and basically + * consists of the raw byte sequences of algorithm parameters. The exact order + * of the byte sequences and the implementation details are given in each of the + * relevant getEncoded() methods of each of the private and + * public keys. + *

+ * IMPORTANT: Under certain circumstances (e.g. in an X.509 certificate + * with inherited AlgorithmIdentifier's parameters of a SubjectPublicKeyInfo + * element) these three MPIs may be null. + * + * @see DSSPrivateKey#getEncoded + * @see DSSPublicKey#getEncoded + */ +public abstract class DSSKey + implements Key, DSAKey +{ + /** + * A prime modulus, where + * 2L-1 < p < 2L for + * 512 <= L <= 1024 and L a multiple of + * 64. + */ + protected final BigInteger p; + + /** + * A prime divisor of p - 1, where + * 2159 < q + * < 2160. + */ + protected final BigInteger q; + + /** + * g = h(p-1)/q mod p, where h is + * any integer with 1 < h < p - 1 such that h + * (p-1)/q mod p > 1 (g + * has order q mod p + * ). + */ + protected final BigInteger g; + + /** + * Identifier of the default encoding format to use when externalizing the key + * material. + */ + protected final int defaultFormat; + + /** String representation of this key. Cached for speed. */ + private transient String str; + + /** + * Trivial protected constructor. + * + * @param defaultFormat the identifier of the encoding format to use by + * default when externalizing the key. + * @param p the DSS parameter p. + * @param q the DSS parameter q. + * @param g the DSS parameter g. + */ + protected DSSKey(int defaultFormat, BigInteger p, BigInteger q, BigInteger g) + { + super(); + + this.defaultFormat = defaultFormat <= 0 ? Registry.RAW_ENCODING_ID + : defaultFormat; + this.p = p; + this.q = q; + this.g = g; + } + + public DSAParams getParams() + { + return new DSAParameterSpec(p, q, g); + } + + public String getAlgorithm() + { + return Registry.DSS_KPG; + } + + /** @deprecated see getEncoded(int). */ + public byte[] getEncoded() + { + return getEncoded(defaultFormat); + } + + public String getFormat() + { + return FormatUtil.getEncodingShortName(defaultFormat); + } + + /** + * Returns true if the designated object is an instance of + * {@link DSAKey} and has the same DSS (Digital Signature Standard) parameter + * values as this one. + *

+ * Always returns false if the MPIs of this key are + * inherited. This may be the case when the key is re-constructed from + * an X.509 certificate with absent or NULL AlgorithmIdentifier's parameters + * field. + * + * @param obj the other non-null DSS key to compare to. + * @return true if the designated object is of the same type + * and value as this one. + */ + public boolean equals(Object obj) + { + if (hasInheritedParameters()) + return false; + + if (obj == null) + return false; + + if (! (obj instanceof DSAKey)) + return false; + + DSAKey that = (DSAKey) obj; + return p.equals(that.getParams().getP()) + && q.equals(that.getParams().getQ()) + && g.equals(that.getParams().getG()); + } + + public String toString() + { + if (str == null) + { + String ls = (String) AccessController.doPrivileged(new GetPropertyAction("line.separator")); + CPStringBuilder sb = new CPStringBuilder(ls) + .append("defaultFormat=").append(defaultFormat).append(",") + .append(ls); + if (hasInheritedParameters()) + sb.append("p=inherited,").append(ls) + .append("q=inherited,").append(ls) + .append("g=inherited"); + else + sb.append("p=0x").append(p.toString(16)).append(",").append(ls) + .append("q=0x").append(q.toString(16)).append(",").append(ls) + .append("g=0x").append(g.toString(16)); + str = sb.toString(); + } + return str; + } + + public abstract byte[] getEncoded(int format); + + /** + * @return true if p, q and + * g are all null. Returns + * false otherwise. + */ + public boolean hasInheritedParameters() + { + return p == null && q == null && g == null; + } +} -- cgit v1.2.3