Java Key Tools : Keytool « Security « Java

1. Java
2. Security
3. Keytool

Java Key Tools

  
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;

public class KeyTools {
  public static void writeToFile(Key key, File file) throws IOException {
    FileOutputStream fileoutputstream = new FileOutputStream(file);
    ObjectOutputStream objectoutputstream = new ObjectOutputStream(fileoutputstream);
    objectoutputstream.writeObject(key);
    objectoutputstream.close();
  }
  public static void main(String[] rgstring) {
    try {
      File filePublic = new File(rgstring[0]);
      File filePrivate = new File(rgstring[1]);

      KeyPairGenerator keypairgenerator = KeyPairGenerator.getInstance("DSA");

      keypairgenerator.initialize(1024, new SecureRandom());

      KeyPair keypair = keypairgenerator.generateKeyPair();
      
      writeToFile(keypair.getPublic(), filePublic);
      writeToFile(keypair.getPrivate(), filePrivate);
    } catch (Exception ex) {
      ex.printStackTrace();
    }
  }
}

   
    
  

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