/*
 * JavaScript client-side example using jsrsasign
 */

// #########################################################
// #             WARNING   WARNING   WARNING               #
// #########################################################
// #                                                       #
// # This file is intended for demonstration purposes      #
// # only.                                                 #
// #                                                       #
// # It is the SOLE responsibility of YOU, the programmer  #
// # to prevent against unauthorized access to any signing #
// # functions.                                            #
// #                                                       #
// # Organizations that do not protect against un-         #
// # authorized signing will be black-listed to prevent    #
// # software piracy.                                      #
// #                                                       #
// # -QZ Industries, LLC                                   #
// #                                                       #
// #########################################################

/**
 * Depends:
 *     - jsrsasign-latest-all-min.js
 *     - qz-tray.js
 *
 * Steps:
 *
 *     1. Include jsrsasign 10.9.0 into your web page
 *        <script src="https://cdnjs.cloudflare.com/ajax/libs/jsrsasign/11.1.0/jsrsasign-all-min.js"></script>
 *
 *     2. Update the privateKey below with contents from private-key.pem
 *
 *     3. Include this script into your web page
 *        <script src="path/to/sign-message.js"></script>
 *
 *     4. Remove or comment out any other references to "setSignaturePromise"
 *
 *     5. IMPORTANT: Before deploying to production, copy "jsrsasign-all-min.js"
 *        to the web server.  Don't trust the CDN above to be available.
 */
var privateKey = "-----BEGIN PRIVATE KEY-----\n" +
   "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQC0z9FeMynsC8+u\n" +
   "dvX+LciZxnh5uRj4C9S6tNeeAlIGCfQYk0zUcNFCoCkTknNQd/YEiawDLNbxBqut\n" +
   "bMDZ1aarys1a0lYmUeVLCIqvzBkPJTSQsCopQQ9V8WuT252zzNzs68dVGNdCJd5J\n" +
   "NRQykpwexmnjPPv0mvj7i8XgG379TyW6P+WWV5okeUkXJ9eJS2ouDYdR2SM9BoVW\n" +
   "+FgxDu6BmXhozW5EfsnajFp7HL8kQClI0QOc79yuKl3492rH6bzFsFn2lfwWy9ic\n" +
   "7cP8EpCTeFp1tFaD+vxBhPZkeTQ1HKx6hQ5zeHIB5ySJJZ7af2W8r4eTGYzbdRW2\n" +
   "4DDHCPhZAgMBAAECggEATvofR3gtrY8TLe+ET3wMDS8l3HU/NMlmKA9pxvjYfw7F\n" +
   "8h4VBw4oOWPfzU7A07syWJUR72kckbcKMfw42G18GbnBrRQG0UIgV3/ppBQQNg9Y\n" +
   "QILSR6bFXhLPnIvm/GxVa58pOEBbdec4it2Gbvie/MpJ4hn3K8atTqKk0djwxQ+b\n" +
   "QNBWtVgTkyIqMpUTFDi5ECiVXaGWZ5AOVK2TzlLRNQ5Y7US8lmGxVWzt0GONjXSE\n" +
   "iO/eBk8A7wI3zknMx5o1uZa/hFCPQH33uKeuqU5rmphi3zS0BY7iGY9EoKu/o+BO\n" +
   "HPwLQJ3wCDA3O9APZ3gmmbHFPMFPr/mVGeAeGP/BAQKBgQDaPELRriUaanWrZpgT\n" +
   "VnKKrRSqPED3anAVgmDfzTQwuR/3oD506F3AMBzloAo3y9BXmDfe8qLn6kgdZQKy\n" +
   "SFNLz888at96oi+2mEKPpvssqiwE6F3OtEM6yv4DP9KJHaHmXaWv+/sjwjzpFNjs\n" +
   "wGThBxFvrTWRJqBYsM1XNJJ2EQKBgQDUGbTSwHKqRCYWhQ1GPCZKE98l5UtMKvUb\n" +
   "hyWWOXoyoeYbJEMfG1ynX4JeXIkl6YtBjYCqszv9PjHa1rowTZaAPJ0V70zyhTcF\n" +
   "t581ii9LpiejIGrELHvJnW87QmjjStkjwGIqgKLp7Qe6CDjHI9HP1NM0uav/IQLW\n" +
   "pB6wyEz1yQKBgQCuxPut+Ax2rzM05KB9PAnWzO1zt3U/rtm8IAF8uVVGf7r+EDJ0\n" +
   "ZXJO6zj5G8WTEYHz5E86GI4ltBW0lKQoKouqdu27sMrv5trXG/CSImOcTVubQot9\n" +
   "chc1CkOKTp5IeJajafO6j817wZ4N+0gNsbYYEBUCnm/7ojdfT5ficpOoQQKBgQDB\n" +
   "PgKPmaNfGeQR1Ht5qEfCakR/RF/ML79Nq15FdmytQPBjfjBhYQ6Tt+MRkgGqtxOX\n" +
   "UBMQc2iOnGHT3puYcrhScec1GufidhjhbqDxqMrag7HNYDWmMlk+IeA7/4+Mtp8L\n" +
   "gbZuvvCvbLQDfIYueaYpUuBzQ08/jZYGdVU4/+WOcQKBgAGUN0kIB6EM1K/iZ0TN\n" +
   "jlt8P5UEV3ZCyATWFiGZRhhE2WAh8gv1jx4J26pcUs1n8sd2a1h6ZuBSqsyIlNSp\n" +
   "xtKsm3bqQFDHRrPcsBX4nanrw9DzkpH1k/I3WMSdGqkDAR3DtL7yXTJXJo2Sbrp5\n" +
   "EjzSn7DcDE1tL2En/tSVXeUY\n" +
   "-----END PRIVATE KEY-----";

qz.security.setSignatureAlgorithm("SHA512"); // Since 2.1
qz.security.setSignaturePromise(function(toSign) {
    return function(resolve, reject) {
        try {
            var pk = KEYUTIL.getKey(privateKey);
            var sig = new KJUR.crypto.Signature({"alg": "SHA512withRSA"});  // Use "SHA1withRSA" for QZ Tray 2.0 and older
            sig.init(pk); 
            sig.updateString(toSign);
            var hex = sig.sign();
            console.log("DEBUG: \n\n" + stob64(hextorstr(hex)));
            resolve(stob64(hextorstr(hex)));
        } catch (err) {
            console.error(err);
            reject(err);
        }
    };
});