Rhapsody MESH API Token

function meshAuthorisationToken (mailboxId, mailboxPassword, secretKey) {
	// GS 2016-12-13
    // construct MESH authorisation token
	var d = new Date();
	var ts = '' + d.getFullYear() 
		   + (d.getMonth() < 9 ? '0' + (d.getMonth()+1) : (d.getMonth()+1)) 
		   + (d.getDate() < 9 ? '0' + (d.getDate()) : (d.getDate())) 
		   + (d.getHours() < 10 ? '0' + d.getHours() : d.getHours())
		   + (d.getMinutes() < 10 ? '0' + d.getMinutes() : d.getMinutes());
		   
	var nonce = generateUuid();
	var nonceCount = 1;
	var msg = java.lang.String(mailboxId + ':' + nonce + ':' + nonceCount + ':' + mailboxPassword + ':' + ts);
	
	var secretStr = java.lang.String(secretKey); 
	var mac = javax.crypto.Mac.getInstance("HmacSHA256");
	var secret = new javax.crypto.spec.SecretKeySpec(secretStr.getBytes("UTF-8"), "HmacSHA256");
	mac.init(secret);
	var hash = javax.xml.bind.DatatypeConverter.printHexBinary(mac.doFinal(msg.getBytes("UTF-8"))).toLowerCase();

	var auth = 'NHSMESH ' + mailboxId + ':' + nonce + ':' + nonceCount + ':' + ts + ':' + hash;

	return auth;
}