(Java) Encrypt / Decrypt Secure Strings

Demonstrates how to use the EncryptSecureENC and DecryptSecureENC methods to encrypt/decrypt secure strings. These methods were added in Chilkat v9.5.0.71 (released January 2018).

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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[])
  {
    //  This example requires the Chilkat Crypt API to have been previously unlocked.
    //  See Unlock Chilkat Crypt for sample code.

    //  Load the secure string with some text.
    CkSecureString secStr1 = new CkSecureString();
    boolean success = secStr1.LoadFile("qa_data/txt/helloWorld.txt","utf-8");
    if (success != true) {
        System.out.println("Failed to load helloWorld.txt");
        return;
        }

    CkCrypt2 crypt = new CkCrypt2();

    crypt.put_CryptAlgorithm("aes");
    crypt.put_CipherMode("cbc");
    crypt.put_KeyLength(128);
    crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex");
    crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex");
    crypt.put_EncodingMode("base64");

    //  Return the base64 encoded encrypted contents of secStr1.
    String encryptedStr = crypt.encryptSecureENC(secStr1);
    System.out.println("Encrypted string: " + encryptedStr);

    //  Output:
    //  Encrypted string: qiq+IFhcjTkEIkZyf31V/g==

    //  Decrypt to secStr2:
    CkSecureString secStr2 = new CkSecureString();
    crypt.DecryptSecureENC(encryptedStr,secStr2);

    //  Access the contents of secStr2
    System.out.println("Decrypted string: " + secStr2.access());

    //  Output:
    //  Decrypted string: Hello World!
  }
}