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/key/dss/DSSKeyPairX509Codec.java | 276 +++++++++++++++++++++ 1 file changed, 276 insertions(+) create mode 100644 libjava/classpath/gnu/java/security/key/dss/DSSKeyPairX509Codec.java (limited to 'libjava/classpath/gnu/java/security/key/dss/DSSKeyPairX509Codec.java') diff --git a/libjava/classpath/gnu/java/security/key/dss/DSSKeyPairX509Codec.java b/libjava/classpath/gnu/java/security/key/dss/DSSKeyPairX509Codec.java new file mode 100644 index 000000000..8c26910f1 --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/dss/DSSKeyPairX509Codec.java @@ -0,0 +1,276 @@ +/* DSSKeyPairX509Codec.java -- X.509 Encoding/Decoding handler + 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.key.dss; + +import gnu.java.security.OID; +import gnu.java.security.Registry; +import gnu.java.security.der.BitString; +import gnu.java.security.der.DER; +import gnu.java.security.der.DERReader; +import gnu.java.security.der.DERValue; +import gnu.java.security.der.DERWriter; +import gnu.java.security.key.IKeyPairCodec; +import gnu.java.security.util.DerUtil; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.math.BigInteger; +import java.security.InvalidParameterException; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.util.ArrayList; + +/** + * An implementation of an {@link IKeyPairCodec} that knows how to encode / + * decode X.509 ASN.1 external representation of DSS public keys. + */ +public class DSSKeyPairX509Codec + implements IKeyPairCodec +{ + private static final OID DSA_ALG_OID = new OID(Registry.DSA_OID_STRING); + + // implicit 0-arguments constructor + + public int getFormatID() + { + return X509_FORMAT; + } + + /** + * Returns the X.509 ASN.1 SubjectPublicKeyInfo representation of a + * DSA public key. The ASN.1 specification, as defined in RFC-3280, and + * RFC-2459, is as follows: + * + * 
+   *   SubjectPublicKeyInfo ::= SEQUENCE {
+   *     algorithm         AlgorithmIdentifier,
+   *     subjectPublicKey  BIT STRING
+   *   }
+   *
+   *   AlgorithmIdentifier ::= SEQUENCE {
+   *     algorithm   OBJECT IDENTIFIER,
+   *     parameters  ANY DEFINED BY algorithm OPTIONAL
+   *   }
+   *
+   *   DssParams ::= SEQUENCE {
+   *     p   INTEGER,
+   *     q   INTEGER,
+   *     g   INTEGER
+   *   }
+   *
+ *

+ * Note that RFC-3280 (page 79) implies that some certificates MAY have an + * absent, or NULL, parameters field in their AlgorithmIdentifier element, + * implying that those parameters MUST be inherited from another + * certificate. This implementation, encodes a NULL element as the DER + * value of the parameters field when such is the case. + *

+ * The subjectPublicKey field, which is a BIT STRING, contains the + * DER-encoded form of the DSA public key as an INTEGER. + * + * 

+   *       DSAPublicKey ::= INTEGER -- public key, Y
+   *
+ * + * @param key the {@link PublicKey} instance to encode. MUST be an instance of + * {@link DSSPublicKey}. + * @return the ASN.1 representation of the SubjectPublicKeyInfo in an + * X.509 certificate. + * @throw InvalidParameterException if key is not an instance + * of {@link DSSPublicKey} or if an exception occurs during the + * marshalling process. + */ + public byte[] encodePublicKey(PublicKey key) + { + if (! (key instanceof DSSPublicKey)) + throw new InvalidParameterException("key"); + + DERValue derOID = new DERValue(DER.OBJECT_IDENTIFIER, DSA_ALG_OID); + + DSSPublicKey dssKey = (DSSPublicKey) key; + DERValue derParams; + if (dssKey.hasInheritedParameters()) + derParams = new DERValue(DER.NULL, null); + else + { + BigInteger p = dssKey.getParams().getP(); + BigInteger q = dssKey.getParams().getQ(); + BigInteger g = dssKey.getParams().getG(); + + DERValue derP = new DERValue(DER.INTEGER, p); + DERValue derQ = new DERValue(DER.INTEGER, q); + DERValue derG = new DERValue(DER.INTEGER, g); + + ArrayList params = new ArrayList(3); + params.add(derP); + params.add(derQ); + params.add(derG); + derParams = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, params); + } + + ArrayList algorithmID = new ArrayList(2); + algorithmID.add(derOID); + algorithmID.add(derParams); + DERValue derAlgorithmID = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, + algorithmID); + + BigInteger y = dssKey.getY(); + DERValue derDSAPublicKey = new DERValue(DER.INTEGER, y); + byte[] yBytes = derDSAPublicKey.getEncoded(); + DERValue derSPK = new DERValue(DER.BIT_STRING, new BitString(yBytes)); + + ArrayList spki = new ArrayList(2); + spki.add(derAlgorithmID); + spki.add(derSPK); + DERValue derSPKI = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, spki); + + byte[] result; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + try + { + DERWriter.write(baos, derSPKI); + result = baos.toByteArray(); + } + catch (IOException x) + { + InvalidParameterException e = new InvalidParameterException(x.getMessage()); + e.initCause(x); + throw e; + } + return result; + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public byte[] encodePrivateKey(PrivateKey key) + { + throw new InvalidParameterException("Wrong format for private keys"); + } + + /** + * @param input the byte array to unmarshall into a valid DSS + * {@link PublicKey} instance. MUST NOT be null. + * @return a new instance of a {@link DSSPublicKey} decoded from the + * SubjectPublicKeyInfo material in an X.509 certificate. + * @throw InvalidParameterException if an exception occurs during the + * unmarshalling process. + */ + public PublicKey decodePublicKey(byte[] input) + { + if (input == null) + throw new InvalidParameterException("Input bytes MUST NOT be null"); + + BigInteger p = null; + BigInteger g = null; + BigInteger q = null; + BigInteger y; + DERReader der = new DERReader(input); + try + { + DERValue derSPKI = der.read(); + DerUtil.checkIsConstructed(derSPKI, "Wrong SubjectPublicKeyInfo field"); + + DERValue derAlgorithmID = der.read(); + DerUtil.checkIsConstructed(derAlgorithmID, "Wrong AlgorithmIdentifier field"); + + DERValue derOID = der.read(); + if (! (derOID.getValue() instanceof OID)) + throw new InvalidParameterException("Wrong Algorithm field"); + + OID algOID = (OID) derOID.getValue(); + if (! algOID.equals(DSA_ALG_OID)) + throw new InvalidParameterException("Unexpected OID: " + algOID); + + DERValue val = der.read(); + // RFC-3280, page 79 states: "If the subjectPublicKeyInfo field of the + // certificate contains an algorithm field with null parameters or + // parameters are omitted, compare the certificate subjectPublicKey + // algorithm to the working_public_key_algorithm. If the certificate + // subjectPublicKey algorithm and the working_public_key_algorithm are + // different, set the working_public_key_parameters to null." + // in other words, the parameters field of an AlgorithmIdentifier + // element MAY NOT be present at all, or if present MAY be NULL! + // the Mauve test ValidDSAParameterInheritenceTest5, in + // gnu.testlet.java.security.cert.pkix.pkits, is/was failing because + // of this. + if (val.getTag() == DER.NULL) + val = der.read(); + else if (val.isConstructed()) + { + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong P field"); + p = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong Q field"); + q = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong G field"); + g = (BigInteger) val.getValue(); + + val = der.read(); + } + + if (! (val.getValue() instanceof BitString)) + throw new InvalidParameterException("Wrong SubjectPublicKey field"); + + byte[] yBytes = ((BitString) val.getValue()).toByteArray(); + + DERReader dsaPub = new DERReader(yBytes); + val = dsaPub.read(); + DerUtil.checkIsBigInteger(val, "Wrong Y field"); + y = (BigInteger) val.getValue(); + } + catch (IOException x) + { + InvalidParameterException e = new InvalidParameterException(x.getMessage()); + e.initCause(x); + throw e; + } + return new DSSPublicKey(Registry.X509_ENCODING_ID, p, q, g, y); + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public PrivateKey decodePrivateKey(byte[] input) + { + throw new InvalidParameterException("Wrong format for private keys"); + } +} -- cgit v1.2.3