Trail: Security Features in Java SE
Lesson: Generating and Verifying Signatures
Section: Generating a Digital Signature
Prepare Initial Program Structure
Home Page > Security Features in Java SE > Generating and Verifying Signatures

Prepare Initial Program Structure

Here's the basic structure of the GenSig program. Place it in a file called GenSig.java.

import java.io.*;
import java.security.*;

class GenSig {

    public static void main(String[] args) {

        /* Generate a DSA signature */

        if (args.length != 1) {
            System.out.println(
                "Usage: GenSig nameOfFileToSign");
        }
        else try {

        // the rest of the code goes here

        } catch (Exception e) {
            System.err.println(
                "Caught exception " +
                    e.toString());
        }
    }
}


Notes:


Problems with the examples? Try Compiling and Running the Examples: FAQs.
Complaints? Compliments? Suggestions? Give us your feedback.

Previous page: Generating a Digital Signature
Next page: Generate Public and Private Keys