Java TSA TimeStamper

Simple Java project that uses Bouncy Castle API to send TimeStamp request (to free TSA).

Usage

import org.bouncycastle.tsp.TSPAlgorithms;
import org.bouncycastle.tsp.TimeStampResponse;

public class Main
{
    public static void main(String[] args) throws Exception
    {
        // Construct TimeStamper object using builder class...
        TimeStamper timeStamper = new TimeStamper.Builder()
                .requestMethod("GET")
                .messageDigest("SHA-256", TSPAlgorithms.SHA256)
                .tsaUrl("http://some-tsa-url.com")
                .data("Some!".getBytes())
                .build();

        // Call timestamp method to get TimeStampResponse.
        TimeStampResponse response = timeStamper.timestamp();

        // Print or use it anywhere...
        System.out.println(response.getTimeStampToken().getTimeStampInfo().getGenTime());
    }
}