DSA Generate Key

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success;

    CkDsa dsa = new CkDsa();

    success = dsa.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(dsa.lastErrorText());
        return;
    }

    //  Call GenKey to generate a new DSA key.
    //  The number of bits should be at least 1024 and a multiple
    //  of 64.   Typical values are either 1024 or 2048.
    //  DSA key generation is compute intensive and may take
    //  a short while to complete.
    success = dsa.GenKey(2048);
    if (success != true) {
        System.out.println(dsa.lastErrorText());
        return;
    }

    //  Extract the private and public parts to PEM or DER format
    //  and save to files...
    String pemStr;
    String xmlStr;

    //  First for the public key...
    //  The public key never needs to be encrypted.

    //  Save the public key in PEM format:
    pemStr = dsa.toPublicPem();
    //  This example will not check the return value of SaveText...
    success = dsa.SaveText(pemStr,"dsa_pub.pem");

    //  Save the public key in DER format:
    success = dsa.ToPublicDerFile("dsa_pub.der");

    boolean bPublicOnly;
    bPublicOnly = true;
    //  Save to XML
    xmlStr = dsa.toXml(bPublicOnly);
    success = dsa.SaveText(xmlStr,"dsa_pub.xml");

    //  ------------------------------------
    //  Now for the private key....
    //  ------------------------------------

    //  Unencrypted PEM:
    pemStr = dsa.toPem();
    success = dsa.SaveText(pemStr,"dsa_priv.pem");

    //  Encrypted PEM:
    pemStr = dsa.toEncryptedPem("myPassword");
    success = dsa.SaveText(pemStr,"dsa_privEncrypted.pem");

    //  DER:
    success = dsa.ToDerFile("dsa_priv.der");

    //  XML:
    bPublicOnly = false;
    xmlStr = dsa.toXml(bPublicOnly);
    success = dsa.SaveText(xmlStr,"dsa_priv.xml");

    System.out.println("Finished!");
  }
}