Java

RSA OAEP Padding

See more RSA Examples

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

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkRsa rsa = new CkRsa();

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

    CkPublicKey pubKey = new CkPublicKey();
    success = pubKey.LoadFromString(pubKeyXml);
    if (success == false) {
        System.out.println(pubKey.lastErrorText());
        return;
        }

    success = rsa.UsePublicKey(pubKey);
    if (success == false) {
        System.out.println(rsa.lastErrorText());
        return;
        }

    // To use Optimal Asymmetric Encryption Padding (OAEP) padding,
    // simply set the PkcsPadding property to false
    rsa.put_PkcsPadding(false);

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

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

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