Using a .NET .snk Key File for RSA Encryption

Demonstrates how to load and use a .NET .snk key file for RSA encryption. SNK files are created by the Microsoft .NET Strong Name Tool (Sn.exe).

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();

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

    //  Load a public/private key pair from a .snk key file.
    const char * xmlKey;
    xmlKey = rsa.snkToXml("chilkat2.snk");

    System.out.println(xmlKey);

    //  The xmlKey contains both public and private keys.
    //  Import either the public or private for encrypting or
    //  decrypting.
    rsa.ImportPrivateKey(xmlKey);

    bool bUsePrivateKey;
    bUsePrivateKey = true;
    const char * encryptedText;
    encryptedText = rsa.encryptStringENC("Hello World!",bUsePrivateKey);

    System.out.println(encryptedText);

    //  Now decrypt with the public key:
    rsa.ImportPublicKey(xmlKey);
    bUsePrivateKey = false;
    const char * decryptedText;
    decryptedText = rsa.decryptStringENC(encryptedText,bUsePrivateKey);

    System.out.println(decryptedText);

    //  Note: We could have just as well encrypted using the public key
    //  and decrypted using the private key.

  }
}