(Java) Manually Duplicate SetSecretKeyViaPassword

Demonstrates how to duplicate the password string to binary secret key computation of SetSecretKeyViaPassword.

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

    CkCrypt2 crypt = new CkCrypt2();

    // The password string is transformed to a binary secret key by computing the 
    // MD5 digest (of the utf-8 password) to obtain 16 bytes.  
    // If the KeyLength is greater than 16 bytes, then the MD5 digest of the Base64 encoding 
    // of the utf-8 password is added.  A max of 32 bytes of key material is generated, and 
    // this is truncated to the actual KeyLength required.

    crypt.put_CryptAlgorithm("aes");
    crypt.put_KeyLength(256);

    String password = "this is my password";
    crypt.SetSecretKeyViaPassword(password);

    // Examine the resulting SecretKey in hex:
    System.out.println("Computed Secret Key = " + crypt.getEncodedKey("hex"));

    // Now perform the same computation manually:
    CkStringBuilder sb = new CkStringBuilder();

    crypt.put_HashAlgorithm("md5");
    crypt.put_Charset("utf-8");
    crypt.put_EncodingMode("hex");
    sb.Append(crypt.hashStringENC(password));

    String passwordBase64 = crypt.encodeString(password,"utf-8","base64");
    sb.Append(crypt.hashStringENC(passwordBase64));

    System.out.println("Manually Computed = " + sb.getAsString());

    // The output is:
    // Computed Secret Key = 210D53992DFF432EC1B1A9698AF9DA16C7E90518F90E24828F78EC9E0A413B36
    // Manually Computed = 210D53992DFF432EC1B1A9698AF9DA16C7E90518F90E24828F78EC9E0A413B36
  }
}