Java

Generate an RSA Key and Save to Encrypted PEM

See more RSA Examples

Demonstrates how to generate an RSA key and save to an encrypted PEM file. Java

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 = false;

    CkRsa rsa = new CkRsa();

    // Generate a 2048-bit key.
    CkPrivateKey privKey = new CkPrivateKey();
    success = rsa.GenKey(2048,privKey);
    if (success == false) {
        System.out.println(rsa.lastErrorText());
        return;
        }

    String password = "secret";
    // Saving to a relative path (from the current working directory of the process).
    String path = "rsaKeys/myTestRsaPrivate.pem";
    // Encrypt the PEM using 256-bit AES encryption.
    privKey.put_Pkcs8EncryptAlg("aes256");
    success = privKey.SavePkcs8EncryptedPemFile(password,path);
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    // 

    // We can also save the public key.
    // There is no need to encrypt public keys.
    CkPublicKey pubKey = new CkPublicKey();
    privKey.ToPublicKey(pubKey);

    path = "rsaKeys/myTestRsaPublic.pem";
    // Choose PKCS1 or PKCS8
    // We'll choose PKCS8.
    boolean preferPkcs1 = false;
    success = pubKey.SavePemFile(preferPkcs1,path);
    if (success == false) {
        System.out.println(pubKey.lastErrorText());
        return;
        }

    // 

    System.out.println("Success.");
  }
}