package TestCallback;

import  TestCallback.CallbackDigestUserInterface;
import java.io.FileInputStream;
import java.security.DigestInputStream;
import java.security.MessageDigest;

public class CallbackDigest implements Runnable{
	private String filename;
	public CallbackDigest(String filename){
		this.filename = filename;
	}
	@Override
	public void run(){
		try {
			FileInputStream in = new FileInputStream(filename);
			MessageDigest sha = MessageDigest.getInstance("SHA-256");
			DigestInputStream din = new DigestInputStream(in, sha);
			while(din.read() != -1);
			din.close();
			byte[] digest = sha.digest();
			CallbackDigestUserInterface.receiveDigest(digest,filename);
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
}