CRLRef.java example

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dss-master
/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.validation;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.cert.CRLException;
import java.security.cert.X509CRL;
import java.text.ParseException;
import java.util.Arrays;
import java.util.Date;

import org.bouncycastle.asn1.esf.CrlIdentifier;
import org.bouncycastle.asn1.esf.CrlValidatedID;
import org.bouncycastle.asn1.esf.OtherHash;
import org.bouncycastle.asn1.x500.X500Name;

import eu.europa.esig.dss.DSSException;
import eu.europa.esig.dss.DSSUtils;
import eu.europa.esig.dss.DigestAlgorithm;

/**
 * Reference to a X509CRL
 *
 */
public final class CRLRef {

	private X500Name crlIssuer;
	private Date crlIssuedTime;
	private BigInteger crlNumber;
	private DigestAlgorithm digestAlgorithm;
	private byte[] digestValue;

	/**
	 * The default constructor for CRLRef.
	 */
	public CRLRef(DigestAlgorithm digestAlgorithm, byte[] digestValue) {
		this.digestAlgorithm = digestAlgorithm;
		this.digestValue = digestValue;
	}

	/**
	 * The default constructor for CRLRef.
	 *
	 * @param cmsRef
	 * @throws ParseException
	 */
	public CRLRef(CrlValidatedID cmsRef) {
		try {

			final CrlIdentifier crlIdentifier = cmsRef.getCrlIdentifier();
			if (crlIdentifier != null) {
				crlIssuer = crlIdentifier.getCrlIssuer();
				crlIssuedTime = crlIdentifier.getCrlIssuedTime().getDate();
				crlNumber = crlIdentifier.getCrlNumber();
			}
			final OtherHash crlHash = cmsRef.getCrlHash();

			digestAlgorithm = DigestAlgorithm.forOID(crlHash.getHashAlgorithm().getAlgorithm().getId());
			digestValue = crlHash.getHashValue();
		} catch (ParseException ex) {
			throw new DSSException(ex);
		}
	}

	/**
	 * @param crl
	 * @return
	 */
	public boolean match(X509CRL crl) {
		try {
			MessageDigest digest = DSSUtils.getMessageDigest(digestAlgorithm);
			byte[] computedValue = digest.digest(crl.getEncoded());
			return Arrays.equals(digestValue, computedValue);
		} catch (CRLException ex) {
			throw new DSSException(ex);
		}
	}

	/**
	 * @return
	 */
	public X500Name getCrlIssuer() {
		return crlIssuer;
	}

	/**
	 * @return
	 */
	public Date getCrlIssuedTime() {
		return crlIssuedTime;
	}

	/**
	 * @return
	 */
	public BigInteger getCrlNumber() {
		return crlNumber;
	}

	/**
	 * @return
	 */
	public DigestAlgorithm getDigestAlgorithm() {
		return digestAlgorithm;
	}

	/**
	 * @return
	 */
	public byte[] getDigestValue() {
		return digestValue;
	}

}