function encryptData() {
	var passwd = retrievePasswd();
	if (crypto.subtle) {
		crypto.subtle.digest({ name: "SHA-256" }, passwd).then(
			function (result1) {
				digestHash = result1;

				return crypto.subtle.importKey("raw", digestHash, { name: "AES-CBC" }, true, ['encrypt']);
			}
		).then(
			function (result2) {
				digestKey = result2;

				salt = window.crypto.getRandomValues(new Uint8Array(16));
				var aesAlgorithmEncrypt = {
					name: "AES-CBC",
					iv: salt
				};

				return crypto.subtle.encrypt(aesAlgorithmEncrypt, digestKey, data);
			}
		).then(
			function (result3) {
				ciphertext = result3;
			}
		),
		function (e2) {
				console.log("Encryption function failed");
		});
	}
}