pbkdf2 signature has changed on nodejs10.x

In response to danilop#71

Author: lmiguelmh

LambdAuthChangePassword/index.js

@@ -14,7 +14,7 @@ function computeHash(password, salt, fn) {
 	var iterations = 4096;
 
 	if (3 == arguments.length) {
-		crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
+		crypto.pbkdf2(password, salt, iterations, len, 'sha1', function(err, derivedKey) {
 			if (err) return fn(err);
 			else fn(null, salt, derivedKey.toString('base64'));
 		});