RSA OAEP Padding

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding.

Download Chilkat Java Library

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[])
  {
    CkRsa rsa = new CkRsa();

    boolean success;
    success = rsa.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println("RSA component unlock failed");
        return;
    }

    //  RSA public key in XML format:
    String publicKey;
    publicKey = "<RSAKeyValue><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";

    rsa.ImportPublicKey(publicKey);

    //  To use Optimal Asymmetric Encryption Padding (OAEP) padding,
    //  simply set the OaepPadding property:
    rsa.put_OaepPadding(true);

    //  Encrypt a string and return the encrypted data base64-encoded:
    rsa.put_EncodingMode("base64");

    String plainText;
    plainText = "RSA Encryption should be easy.";

    boolean usePrivateKey;
    usePrivateKey = false;
    String encryptedStr;
    encryptedStr = rsa.encryptStringENC(plainText,usePrivateKey);
    System.out.println(encryptedStr);
  }
}