crypto pbkdf2 is not called - node.js

Question

I have written an function to hashpasswords with crypto.obkdf2. This function was working fine, but for some reason he doesn't anymore.
EDIT
In a controller I want to create an user with the user.service:
account.controller:
userService.createAccount(details, true, function(err, result){
if(err){
res.status(500).json({message: err});
}else{
//account is created, details are mailed, now we can set the user on the order
user = result;
}
})
The service does a few checks and call the user.register function
user.service
function createAccount (details, generatePassword, callback){
console.log("createAccount");
//generate password, save details + password, mail details, send results back in callback
//if(generatePassword){
// details.password = random(10);
//}
details.password = '7eb4f68ea4';
var userData = _.pick(details, 'firstName', 'lastNamePrefix', 'lastName','email','gender', 'password');
userData.verificationCode = random(8);
userData.userName = userData.email;
console.log("userdate", userData);
User.register(userData, function(err, user){
console.log("register user", err);
if(err && (11000 == err.code || 11001 == err.code)) {
console.log("E-mailadres already in use");
return callback("E-mailadres already in use");
}
if (err) {
console.log("Something went terribly wrong...", err);
return callback("Something went wrong: " + err)
}
var options = {
to: user.email,
subject: 'Uw account op Prisma Note',
template: 'new-account'
}
//Mail sturen met activatielink na aanmaken
mailService.mail(options, user, null, function(err, data){
console.log("sendmail!");
if (err) {
console.log("error sending mail", err);
return callback("Error sending mail: " + err.message);
}else{
console.log("hier!", user);
return callback(null, user);
}
});
})
}
The user.modal contains the register function:
user.model
User.statics.register = function(opts, callback) {
console.log("register!");
var self = this;
var data = _.cloneDeep(opts);
passwordService.hash(opts.password, function(err, hashedPassword, salt) {
if (err) {
console.log("passwordsrv", err);
return callback(err, null);
}
data.password = hashedPassword;
data.passwordSalt = salt;
self.model('User').create(data, function(err, user) {
if (err) {
console.log("createuser", err);
return callback(err, null);
}
user.password = undefined;
user.passwordSalt = undefined;
callback(err, user);
})
})
}
And finally, the code comes to the passwordService
password.service
var LEN = 256;
var SALT_LEN = 64;
var ITERATIONS = 10000;
var DIGEST = 'sha256';
function hashPassword(password, salt, callback){
console.log("hashPassword");
var len = LEN /2;
if (3 === arguments.length) {
crypto.pbkdf2(password, salt, ITERATIONS, len, DIGEST, function(err, derivedKey) {
if (err) {
console.log("crypto err", err);
return callback(err);
}
return callback(null, derivedKey.toString('hex'));
})
} else {
console.log("pwdsrv");
callback = salt;
crypto.randomBytes(SALT_LEN / 2, function(err, salt) {
if (err) {
console.log("randombyte", err);
return callback(err);
}
salt = salt.toString('hex');
console.log("hier");
console.log(password, salt, ITERATIONS, len, DIGEST);
//password = '7eb4f68ea4'
//salt = '21aaac28b8411326b8df5b8b60476904f58d40f972a2f5d698ec4d0fb57dc315'
//ITERATIONS = 10000
//len = 128
//DIGEST = 'sha256'
crypto.pbkdf2(password, salt, ITERATIONS, len, DIGEST, function(err, derivedKey) {
console.log("hjioo");
if (err) {
console.log("pbkdf2", err);
return callback(err);
}
console.log("hier");
callback(null, derivedKey.toString('hex'), salt);
})
})
}
}
This function is called from our 'user model'. That model has an User.statics.register function what we can call. After a lot of debugging lines I have found out the code stops at (in my tested cases) crypto.pbkdf2(password, salt, ITERATIONS, len, DIGEST, function(err, derivedKey) in the else of the function. The log before this function show the content of the variables, but I can't see the logs in the function.
I have no idea, why this is stopped working. We have updated our node.JS version, but since this is an node module, that must be no problem.
Can somebody help me to solve this problem, so our users can register again?
The mailservice, which you can see in the service, sends an email via Amazon SES, I think it is not relevant to post that code.