dtest.java

另一个使用java编写的加密通用算法包

// $Log: dTest.java,v $
// Revision 1.2  1999/06/30 23:06:44  edwin
// Changing package name and fixing references to moved and/or changed classes.
//
// Revision 1.1.1.1  1997/11/03 22:36:55  hopwood
// + Imported to CVS (tagged as 'start').
//
// $Endlog$
package cryptix.examples.pgp;

import java.io.*;
import cryptix.security.rsa.*;

import cryptix.pgp.*;

/**
 * Decrypts a file (name in argv[0]) to the screen
 * Demonstrates the ArmouredMessage, Passphrase and SecretKeyRing classes.
 * Run this in your PGP directory, or provide the full path to your keyrings.
 * <p><b>$Revision: 1.2 $</b>
 * @author Ian Brown
 **/
public final class dTest
{
    public static final void main(String argv[])
    throws FileNotFoundException, IOException, DecryptException, FormatException, InvalidChecksumException
    {
    KeyGlob keyGlob = new KeyGlob();
    ArmouredMessage message;
    String line;

    String messageText = "";

     if (argv.length < 2)
    {
        System.out.println("Usage: java dTest filename passphrase");
        return;
    }

    DataInputStream in = new DataInputStream(new FileInputStream(argv[0]));
    while ((line = in.readLine()) != null) messageText += line + Armoury.LINEFEED;
    in.close();

    System.out.println("Decrypting " + argv[0]);

    // Get keyrings
    keyGlob.addKeyRing(new PublicKeyRing("pubring.pgp"));
     keyGlob.addKeyRing(new SecretKeyRing("secring.pgp"));

    // Decrypt message
    message = new ArmouredMessage(messageText, keyGlob, new Passphrase(argv[1]) );

    // Display plaintext
    if (message.authenticated()) System.out.println("-The following message is signed-------------");
    System.out.println(message.plaintext());
    if (message.authenticated()) 
    {
        String sender = message.signedBy();
        String dashes = ""; // Stores the start of the signed by line
        // Java doesn't have a String * int operator, unfortunately
        for (int i = 0; i < (44 - sender.length()); i++) dashes += "-";
        System.out.println(dashes + sender + "-");
    }
    }
}