Initial revision
From-SVN: r102074
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Tom Tromey
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/* SignerInfo.java -- a SignerInfo object, from PKCS #7
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Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.security.pkcs;
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import gnu.java.security.OID;
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import gnu.java.security.ber.BER;
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import gnu.java.security.ber.BEREncodingException;
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import gnu.java.security.ber.BERReader;
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import gnu.java.security.ber.BERValue;
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import gnu.java.security.der.DERValue;
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import java.io.IOException;
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import java.math.BigInteger;
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import javax.security.auth.x500.X500Principal;
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public class SignerInfo
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{
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private final BigInteger version;
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private final BigInteger serialNumber;
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private final X500Principal issuer;
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private final OID digestAlgorithmId;
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private final byte[] digestAlgorithmParams;
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private final byte[] authenticatedAttributes;
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private final OID digestEncryptionAlgorithmId;
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private final byte[] digestEncryptionAlgorithmParams;
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private final byte[] encryptedDigest;
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private final byte[] unauthenticatedAttributes;
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private static final boolean DEBUG = false;
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private static void debug(String msg)
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{
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System.err.print("SignerInfo >> ");
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System.err.println(msg);
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}
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/**
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* Parse a SignerInfo object.
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*/
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public SignerInfo(BERReader ber) throws IOException
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{
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DERValue val = ber.read();
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if (DEBUG)
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debug("SignerInfo: " + val);
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if (!val.isConstructed())
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throw new BEREncodingException("malformed SignerInfo");
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val = ber.read();
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if (val.getTag() != BER.INTEGER)
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throw new BEREncodingException("malformed Version");
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version = (BigInteger) val.getValue();
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if (DEBUG)
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debug(" Version: " + version);
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val = ber.read();
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if (!val.isConstructed())
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throw new BEREncodingException("malformed IssuerAndSerialNumber");
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if (DEBUG)
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debug(" IssuerAndSerialNumber: " + val);
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val = ber.read();
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if (!val.isConstructed())
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throw new BEREncodingException("malformed Issuer");
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issuer = new X500Principal(val.getEncoded());
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ber.skip(val.getLength());
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if (DEBUG)
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debug(" Issuer: " + issuer);
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val = ber.read();
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if (val.getTag() != BER.INTEGER)
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throw new BEREncodingException("malformed SerialNumber");
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serialNumber = (BigInteger) val.getValue();
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if (DEBUG)
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debug(" SerialNumber: " + serialNumber);
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val = ber.read();
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if (!val.isConstructed())
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throw new BEREncodingException("malformed DigestAlgorithmIdentifier");
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if (DEBUG)
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debug(" DigestAlgorithmIdentifier: " + val);
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int count = 0;
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DERValue val2 = ber.read();
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if (val2.getTag() != BER.OBJECT_IDENTIFIER)
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throw new BEREncodingException("malformed AlgorithmIdentifier");
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digestAlgorithmId = (OID) val2.getValue();
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if (DEBUG)
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debug(" OID: " + digestAlgorithmId);
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if (BERValue.isIndefinite(val))
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{
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val2 = ber.read();
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if (val2 != BER.END_OF_SEQUENCE)
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{
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digestAlgorithmParams = val2.getEncoded();
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val2 = ber.read();
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if (val2 != BER.END_OF_SEQUENCE)
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throw new BEREncodingException("expecting BER end-of-sequence");
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}
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else
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digestAlgorithmParams = null;
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}
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else if (val2.getEncodedLength() < val.getLength())
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{
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val2 = ber.read();
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digestAlgorithmParams = val2.getEncoded();
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if (val2.isConstructed())
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ber.skip(val2.getLength());
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}
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else
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digestAlgorithmParams = null;
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if(DEBUG)
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debug(" params: " + (digestAlgorithmParams == null ? null
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: new BigInteger(digestAlgorithmParams).toString(16)));
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val = ber.read();
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if (val.getTag() == 0)
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{
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authenticatedAttributes = val.getEncoded();
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val = ber.read();
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if (val.isConstructed())
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ber.skip(val.getLength());
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if (DEBUG)
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debug(" AuthenticatedAttributes: " + val);
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val = ber.read();
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}
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else
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authenticatedAttributes = null;
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if (!val.isConstructed())
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throw new BEREncodingException("malformed DigestEncryptionAlgorithmIdentifier");
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if (DEBUG)
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debug(" DigestEncryptionAlgorithmIdentifier: " + val);
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count = 0;
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val2 = ber.read();
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if (val2.getTag() != BER.OBJECT_IDENTIFIER)
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throw new BEREncodingException("malformed AlgorithmIdentifier");
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digestEncryptionAlgorithmId = (OID) val2.getValue();
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if (DEBUG)
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debug(" OID: " + digestEncryptionAlgorithmId);
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if (BERValue.isIndefinite(val))
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{
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val2 = ber.read();
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if (val2 != BER.END_OF_SEQUENCE)
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{
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digestEncryptionAlgorithmParams = val2.getEncoded();
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val2 = ber.read();
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if (val2 != BER.END_OF_SEQUENCE)
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throw new BEREncodingException("expecting BER end-of-sequence");
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}
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else
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digestEncryptionAlgorithmParams = null;
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}
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else if (val2.getEncodedLength() < val.getLength())
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{
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val2 = ber.read();
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digestEncryptionAlgorithmParams = val2.getEncoded();
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if (val2.isConstructed())
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ber.skip(val2.getLength());
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}
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else
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digestEncryptionAlgorithmParams = null;
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if(DEBUG)
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debug(" params: " + (digestEncryptionAlgorithmParams == null ? null
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: new BigInteger(digestEncryptionAlgorithmParams).toString(16)));
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val = ber.read();
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if (val.getTag() != BER.OCTET_STRING)
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throw new BEREncodingException("malformed EncryptedDigest");
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encryptedDigest = (byte[]) val.getValue();
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if (DEBUG)
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debug(" EncryptedDigest: " + new BigInteger(1, encryptedDigest).toString(16));
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if (ber.peek() == 1)
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unauthenticatedAttributes = ber.read().getEncoded();
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else
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unauthenticatedAttributes = null;
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if (ber.peek() == 0)
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ber.read();
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}
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public BigInteger getVersion()
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{
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return version;
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}
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public BigInteger getSerialNumber()
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{
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return serialNumber;
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}
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public X500Principal getIssuer()
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{
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return issuer;
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}
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public OID getDigestAlgorithmId()
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{
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return digestAlgorithmId;
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}
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public byte[] getDigestAlgorithmParams()
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{
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return (digestAlgorithmParams != null
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? (byte[]) digestAlgorithmParams.clone()
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: null);
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}
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public byte[] getAuthenticatedAttributes()
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{
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return (authenticatedAttributes != null
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? (byte[]) authenticatedAttributes.clone()
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: null);
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}
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public OID getDigestEncryptionAlgorithmId()
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{
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return digestEncryptionAlgorithmId;
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}
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public byte[] getDigestEncryptionAlgorithmParams()
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{
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return (digestEncryptionAlgorithmParams != null
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? (byte[]) digestEncryptionAlgorithmParams.clone()
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: null);
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}
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public byte[] getEncryptedDigest()
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{
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return (encryptedDigest != null ? (byte[]) encryptedDigest.clone() : null);
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}
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public byte[] getUnauthenticatedAttributes()
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{
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return (unauthenticatedAttributes != null
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? (byte[]) unauthenticatedAttributes.clone()
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: null);
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}
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}
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