var Crypto = function() { } Crypto.prototype.encrypt = function(seed, string, callback) { GapCrypto.encrypt(seed, string); this.encryptWin = callback; } Crypto.prototype.decrypt = function(seed, string, callback) { GapCrypto.decrypt(seed, string); this.decryptWin = callback; } Crypto.prototype.gotCryptedString = function(string) { this.encryptWin(string); } Crypto.prototype.getPlainString = function(string) { this.decryptWin(string); } PhoneGap.addConstructor(function() { if (typeof navigator.Crypto == "undefined") { navigator.Crypto = new Crypto(); } });