Generating Passwords

Searching for an OOB* feature to generate User passwords, I have found the example below.

var username = 'itil';

var password = SNC.PasswordPolicyEvaluator.generateUserPassword(username);
gs.info(password); // to view the password

If we try to access the SNC API in a Scoped Application it will not work because it is designed for System Administrators. They can run scripts within the Global scope. 

Last month while participating as a Hacktoberfest maintainer I had the chance to evaluate a contribution regarding password generation:

var PasswordGenerator = Class.create();
PasswordGenerator.prototype = {
    initialize: function() {},
    //
    // Input: Minimum password length that is required
    // Returns a random password for the min length specified
    //
    generate: function(givenPasswordLength) {
        var specials = '!@#$%&*()_+<>[].~';
        var lowercase = 'abcdefghijklmnopqrstuvwxyz';
        var uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        var numbers = '0123456789';
        var all = specials + lowercase + uppercase + numbers;
        String.prototype.pick = function(min, max) {
            var n, chars = '';
            if (typeof max === 'undefined') {
                n = min;
            } else {
                n = min + Math.floor(Math.random() * (max - min));
            }
            for (var i = 0; i < n; i++) {
                chars += this.charAt(Math.floor(Math.random() * this.length));
            }
            return chars;
        };

        String.prototype.shuffle = function() {
            var array = this.split('');
            var tmp, current, top = array.length;
            if (top)
                while (--top) {
                    current = Math.floor(Math.random() * (top + 1));
                    tmp = array[current];
                    array[current] = array[top];
                    array[top] = tmp;
                }
            return array.join('');
        };
        //adjust the pick numbers here to increase or decrease password strength
        var ent = givenPasswordLength - 4;
        if (ent < 0) {
            ent = 0;
        }
        var password = (specials.pick(1) + lowercase.pick(1) + uppercase.pick(1) +
                        numbers.pick(1) + all.pick(ent)).shuffle();
        return (password + '');
    },

    type: 'PasswordGenerator'
};

You can create the Script Include above in a Scoped Application. 

Let's test it from the Scripts - Background in our PDI**:

var helper = new PasswordGenerator(); 
var result = helper.generate(20); // password length
gs.info("Password: " + result);

I approved the contribution because despite the fact there is an OOB feature to generate User passwords, this one is specially useful because: 

1) We can specify the password length to be generated;

2) It runs on Scoped Applications;

3) We have many websites on the Internet capable of generating passwords but it is not a good idea to rely on unknown websites to generate your password, right?

4) GlideEncrypter API is deprecated and should not be used

Thank you.

____
*OOB means already developed functionality by ServiceNow developers

**PDI stands for Personal Developer Instance

Community OOB Passwords Setting and Generation Password

Hacktoberfest contribution Generates a random password with a specified length
There is a plugin called ServiceNow Vault which is not in this article scope