Password generator

what is a password generator?

A password generator is software that accepts input from a random or pseudo-random string or number generator and uses it to generate a password for the user.

It is a program that creates passwords depending on the rules the user selects to build complicated passwords that are tough to predict or breach for multiple accounts.

Online hacking is growing more common these days, resulting in passwords and login information being compromised regularly, loss of money, and delicate personal information.

Unfortunately, the majority of stolen passwords are uncomplicated and easy to guess. Names, date of birth, name of your spouse or family member, and personal pet names should not be used as passwords, because they are easy to guess. Password generators are very useful in these circumstances.

Building a password generator

Create a new file named passgen.py where we will write our code.

Let’s start by importing Tkinter:

from tkinter import Button, Entry, Label, StringVar, Tk
from tkinter.ttk import Combobox
import random

The tkinter.ttk module gives the user access to the Tkinter widget set and allows the user to import Combobox. A combobox is a graphical user interface element that merges a drop-down box, list box, and allows the user to select input.

screen = Tk()
screen.title("Password Generator")
screen.geometry('600x400')
screen.configure(background ="red")

A root window is created using the Tk class. The Tk() function assists in the creation of this GUI window, and provides numerous options such as setting the title and the geometry of the GUI window.

The geometry() method is one of the many methods provided by Tkinter. We changed the background color to red using the screen.configure() method.

def gen():
   global sc1
   sc1.set("")
   passw=""
   length=int(c1.get())
   lowercase='abcdefghijklmnopqrstuvwxyz'
   uppercase='ABCDEFGHIJKLMNOPQRSTUVWXYZ'+lowercase
   mixs='0123456789'+lowercase+uppercase+'@#$%&*'

We defined the global variable sc1. We used the .set() method to set the value of sc1 to an empty string. We also assigned an empty string value to the passw variable.

The length variable will retain the value of c1 which will determine the total number of values (alphabets, numbers, and symbols) required to form any password as selected by the user.

We then created a lowercase variable that holds a string value of all the alphabets in lowercase. After that, we created the uppercase variable to hold a string value of all the alphabets in uppercase.

In the last line, we defined the mixs which holds the values for all integer values, alphabets in both uppercase and lowercase, signs and symbols that will be required in creating a high-length password.

Add the following code inside the gen() function:

if c2.get()=='Low Strength':
    for i in range(0,length):
        passw=passw+random.choice(lowercase)
    sc1.set(passw)

elif c2.get()=='Medium Strength':
    for i in range(0,length):
        passw=passw+random.choice(uppercase)
    sc1.set(passw)

elif c2.get()=='High Strength':
    for i in range(0,length):
        passw=passw+random.choice(mixs)
    sc1.set(passw)

We defined the if condition to monitor the strength of the passwords generated. If the user decides the length of the password and then clicks on Low Strength, the password generator generates a random password in lowercase.

If the user clicks on Moderate Srength, the password generator generates a random password in both lowercase and uppercase. This decreases the chances of an intruder predicting the password.

If the user clicks on High Strength, the password generator generates a random password that is a mixs containing uppercase, lowercase, and special alphabetical signs and symbols. This gives an intruder little or no chance of predicting the password.

Add the following code outside the gen() function:

sc1=StringVar('')
t1=Label(screen,text='Password Generator',font=('Arial',26),fg='white',background ="red")
t1.place(x=60,y=0)

t2=Label(screen,text='password:',font=('Arial',16),background ="red")
t2.place(x=145,y=90)

The variable sc1 has been defined. In order to design the GUI window’s section in this project, we’ll use a label, an entry box, and a button.

On the GUI window, we have created a label t1 which is the title of the label item. We type the text on the label. We have also changed the font and background of the label. Then by using the x and y coordinate values, we have assigned the location of the t1 label.

We have also created a label t2, its placeholder text, and its background. And we set its coordinates.

Add the code below:

il=Entry(screen,font=('Arial',16),textvariable=sc1)
il.place(x=280,y=95)

t3=Label(screen,text='Length: ',font=('Arial',16),background ="red")
t3.place(x=150,y=130)

t4=Label(screen,text='Strength:',font=('Arial',16),background ="red")
t4.place(x=145,y=155)

c1=Entry(screen,font=('Arial',16),width=10)
c1.place(x=230,y=120)

c2=Combobox(screen,font=('Arial',16),width=15)
c2['values']=('Low Strength','Medium Strength','High Strength')
c2.current(1)
c2.place(x=237,y=155)

b=Button(screen,text='Generate',font=('Arial',16),fg='red',background ="white",command=gen)
b.place(x=230,y=195)

screen.mainloop()

Using the object il, we defined the entry box. We have calibrated the font of il and put the text variable to store the string worth of sc1. We have used x and y coordinates to assign the location of the il entry. We defined the label t3. Then, using coordinate values, we assigned it a location.

We then created the t4 label. Using coordinates values, we assigned the location. We also gave entry c1 a name. Set the Combobox c2’s values to “Low Strength”, “Medium Strength”, and “High Strength”. The current() function is used to set the value of c2.

Then, using x and y coordinate values, we assigned the location of the c2 Combobox. We defined b as a button and used the generator command to build an action when the button is clicked.

Finally, we used x and y coordinates to assign the location of the button b. The mainloop() function is an infinite loop that is used to run the program.

To run our app, execute the following command on your terminal:

$ python passgen.py

And the password generator interface will be: