/*
* This file is part of rockframework.
*
* rockframework 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 3 of the License, or
* (at your option) any later version.
*
* rockframework 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 this program. If not, see <http://www.gnu.org/licenses/>;.
*/
package br.net.woodstock.rockframework.security.timestamp.impl;
import java.math.BigInteger;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
import org.bouncycastle.tsp.TimeStampRequest;
import org.bouncycastle.tsp.TimeStampRequestGenerator;
import org.bouncycastle.tsp.TimeStampResponse;
import org.bouncycastle.tsp.TimeStampToken;
import br.net.woodstock.rockframework.core.util.Assert;
import br.net.woodstock.rockframework.security.digest.DigestType;
import br.net.woodstock.rockframework.security.digest.Digester;
import br.net.woodstock.rockframework.security.digest.impl.BasicDigester;
import br.net.woodstock.rockframework.security.timestamp.TimeStamp;
import br.net.woodstock.rockframework.security.timestamp.TimeStampClient;
import br.net.woodstock.rockframework.security.timestamp.TimeStampException;
import br.net.woodstock.rockframework.security.timestamp.TimeStampProcessor;
import br.net.woodstock.rockframework.security.util.BouncyCastleProviderHelper;
public abstract class BouncyCastleTimeStampClient implements TimeStampClient {
public static final String PROVIDER_NAME = BouncyCastleProviderHelper.PROVIDER_NAME;
public static final ASN1ObjectIdentifier RSA_OID = OIWObjectIdentifiers.idSHA1;
private TimeStampProcessor processor;
private boolean debug;
public BouncyCastleTimeStampClient(final TimeStampProcessor processor) {
super();
Assert.notNull(processor, "processor");
this.processor = processor;
}
public void setDebug(final boolean debug) {
this.debug = debug;
}
public boolean isDebug() {
return this.debug;
}
@Override
public TimeStamp getTimeStamp(final byte[] data) {
try {
TimeStampRequest request = this.getTimeStampRequest(data);
byte[] response = this.processor.getBinaryResponse(request.getEncoded());
TimeStampResponse timeStampResponse = new TimeStampResponse(response);
TimeStampToken timeStampToken = timeStampResponse.getTimeStampToken();
if (timeStampToken == null) {
throw new IllegalStateException("TimeStampToken not found in response");
}
return BouncyCastleTimeStampHelper.toTimeStamp(timeStampToken);
} catch (Exception e) {
throw new TimeStampException(e);
}
}
protected TimeStampRequest getTimeStampRequest(final byte[] imprint) {
Digester digester = new BasicDigester(DigestType.valueOf(DigestType.SHA1.getAlgorithm()));
byte[] digest = digester.digest(imprint);
TimeStampRequestGenerator generator = new TimeStampRequestGenerator();
generator.setCertReq(true);
BigInteger nonce = BigInteger.valueOf(System.currentTimeMillis());
TimeStampRequest request = generator.generate(BouncyCastleTimeStampClient.RSA_OID, digest, nonce);
return request;
}
}