git-svn-id: http://locode01.ad.dom/svn/WEBMIP/trunk@50874 248e525c-4dfb-0310-94bc-949c084e9493
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andrew.gilmore
157
Data/BulkLoad/EFT/Nominations/java/TimeStamp.java
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157
Data/BulkLoad/EFT/Nominations/java/TimeStamp.java
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/*
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* TimeStamp.java
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*
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* Created on 2007. March 26
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*
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* Adapted from code supplied by MAV Informatika by Advantica Ltd.
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*/
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package tsdemo;
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import org.bouncycastle.tsp.TimeStampRequestGenerator;
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import org.apache.commons.httpclient.HttpClient;
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import org.apache.commons.httpclient.HttpStatus;
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import org.apache.commons.httpclient.methods.PostMethod;
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import org.apache.commons.httpclient.methods.GetMethod;
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import org.apache.commons.httpclient.contrib.ssl.AuthSSLProtocolSocketFactory;
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import org.apache.commons.httpclient.methods.RequestEntity;
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import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;
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import org.apache.commons.httpclient.protocol.Protocol;
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import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;
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import org.bouncycastle.tsp.*;
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import java.security.MessageDigest;
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import java.net.URL;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.io.IOException;
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/**
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*
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* @author root
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*/
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public class TimeStamp {
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private String KeystoreFile;
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private String KeystorePassword;
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private String URL;
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private String time;
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private boolean l_return;
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//
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public static byte[] TSRespByte;
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//
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private final TimeStampRequestGenerator TSReqGen;
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/** Creates a new instance of TimeStamp */
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public TimeStamp() {
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TSReqGen = new TimeStampRequestGenerator();
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TSReqGen.setCertReq(true);
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}
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public void setKeystoreFile(String KeystoreFile) {
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this.KeystoreFile = KeystoreFile;
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//System.out.println("genTS KeystoreFile " + this.KeystoreFile);
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}
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public void setKeystorePassword(String KeystorePassword) {
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this.KeystorePassword = KeystorePassword;
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//System.out.println("genTS KeystorePassword " + this.KeystorePassword);
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}
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public void setURL(String URL) {
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this.URL = URL;
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//System.out.println("genTS URL " + this.URL);
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}
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//
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public static byte[] getResp() {
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//
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return TSRespByte;
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}
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//
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public String generateTimestamp(byte[] hash,int portNumber) throws TSException { // Timestamp creation
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//
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// Code to produce a String java timestamp from a TSA source.
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//
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System.out.println("Entered generateTimestamp with: " + hash + " port: " + portNumber);
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try {
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TimeStampRequest TSReq = TSReqGen.generate("1.3.14.3.2.26", hash); // Setting hash algorithm to SHA-1, creating the TimeStamp Rrequest
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//
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//System.out.println("Got here 1");
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ProtocolSocketFactory authfact = new AuthSSLProtocolSocketFactory( // This Factory helps httpclien to handle https with client side certificate authentication
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new URL("file:" + KeystoreFile), KeystorePassword, // keystore that stores the client certificate
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new URL("file:" + KeystoreFile), KeystorePassword); // keystore that stores the Root certificate of the server
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//
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//System.out.println("Got here 2");
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Protocol authhttps = new Protocol("https", authfact, 443); // registering SSL/TLS handler for https protocol, default port 443
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Protocol.registerProtocol("https", authhttps);
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//
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//System.out.println("Got here 3");
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PostMethod post = new PostMethod(URL); // HTTP POST initialization, configuration
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//
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post.setRequestHeader("Content-type", "application/timestamp-query"); // We send a timestamp request
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post.setRequestHeader("Accept", "application/timestamp-reply"); // and want a timestamp reply in exchange
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//
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//System.out.println("Got here 4");
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post.setRequestEntity(new ByteArrayRequestEntity(TSReq.getEncoded())); // Loading the Timestamp request into the POST method
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post.getParams().setParameter("http.socket.timeout", new Integer(60000)); // in milliseconds (1 min)
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//
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new HttpClient().executeMethod(post); // executing the HTTP POST operation, actual network traffic happens here
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//System.out.println("Got here 5");
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//
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if (post.getStatusCode() != HttpStatus.SC_OK) // If we dont get a normal response, throw an exception
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throw new TSException("unexpected status code: " + post.getStatusCode());
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//
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InputStream in = post.getResponseBodyAsStream(); // transfer the HTTP reply into a managable byte[]
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//System.out.println("Got here 6");
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//
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// New code from Verify routine to produce the timestamp from the InoutStream.
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//
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TimeStampResponse TSResp = new TimeStampResponse(in); // Generate a TimeStampResponse object from the raw data
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//System.out.println("Got here 7");
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TimeStampTokenInfo tsinfo = TSResp.getTimeStampToken().getTimeStampInfo(); // Get the valuable data from the timestamp
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//System.out.println("Got here 8");
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time = tsinfo.getGenTime().toString(); // Translate Timestamp date into a readable form
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//
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// Get the byte[] response from the TSResp object so we can return it to amTimestamp.
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//
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TSRespByte = TSResp.getEncoded();
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in.close();
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return time; // return the timestamp response if no exception occured
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} catch (Exception e) {
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e.printStackTrace();
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throw new TSException(e.getMessage()); // we got an exception, throw it up
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}
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}
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public boolean verifyTimeStamp(byte[] hash, String Algorithm, InputStream tsdata) throws TSException { // Basic TimeStamp verification
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try {
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System.out.println("Verify hash is : " + hash + " Algorithm " + Algorithm + " Data: " + tsdata.toString());
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TimeStampResponse TSResp = new TimeStampResponse(tsdata); // Generate a TimeStampResponse object from the raw data
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TimeStampTokenInfo tsinfo = TSResp.getTimeStampToken().getTimeStampInfo(); // Get the valuable data from the timestamp
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System.out.println("Verify 2");
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time = tsinfo.getGenTime().toString(); // Translate Timestamp date into a readable form
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// Optimistic!
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System.out.println("Time: " + time);
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//
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MessageDigest d = MessageDigest.getInstance(Algorithm); // Get an SHA-1 handler
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return d.isEqual(hash, tsinfo.getMessageImprintDigest()); // Return if the provided hash and the hash in the Timestamp is identical
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} catch (Exception e) {
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e.printStackTrace();
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throw new TSException(e.getMessage()); // some expection occured, throw up
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}
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}
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public String getTime() {
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return time;
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}
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}
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