*Steps to Create an OTP Verification System using Python
OTP Verification is the process of verifying a user by sending a unique
password so that the user can be verified before completing a
registration or payment process. Most of the time, we get an OTP when
we make an online payment, or when we forget our password, or when
creating an account on any online platform. Thus, the sole purpose of
an OTP is to verify the identity of a user by sending a unique password.
We can easily create an application for the task of OTP verification
using Python by following the steps mentioned below:
1. First, create a 6-digit random number
2. Then store the number in a variable
3. Then we need to write a program to send emails
4. When sending email, we need to use OTP as a message
5. Finally, we need to request two user inputs; first for the
user’s email and then for the OTP that the user has received.
So this is the complete process of creating an OTP verification
application using Python. In the section below, I will take you through
how to implement these steps using Python for the task of OTP
verification.
OTP Verification using Python
I hope you now have understood what is an OTP and how we can create
an application for the task of OTP verification. Now let’s follow the
steps mentioned above by using Python to create an application for the
task of OTP verification. I will start by importing the necessary Python
library that we need for this task:*
*import os
import math
import random
import smtplib
Now I will generate a random number and store it in a variable which I will be using while sending emails to the users:
digits="0123456789"
OTP=""
for i in range(6):
OTP +=digits[math.floor(random.random()*10)]
otp = OTP + " is your OTP"
msg= otp
Now, before we go ahead, you need to have your Google app password
to be able to send emails using your Gmail account. After you create your app
password for your Gmail account you will get a key. Copy that key and
paste in the code below to send emails for OTP verification using Python:
s = smtplib.SMTP('smtp.gmail.com', 587)
s.starttls()
s.login("Your Gmail Account", "You app password")
emailid = input("Enter your email: ")
s.sendmail('&&&&&&&&&&&',emailid,msg)
a = input("Enter Your OTP >>: ")
if a == OTP:
print("Verified")
else:
print("Please Check your OTP again")
Enter your email: aman@thecleverprogrammer.com
Enter Your OTP >>: 478348
Verified
Once you run this code you enter an email where you want to send an OTP and then enter the OTP that you have received in the email. You can get the complete code used in this article for the task of OTP verification from below.
import os
import math
import random
import smtplib
digits="0123456789"
OTP=""
for i in range(6):
OTP
+=digits[math.floor(random.random()*10)]
otp = OTP + " is your OTP"
msg= otp
s = smtplib.SMTP('smtp.gmail.com', 587)
s.starttls()
s.login("Your Gmail Account", "You app password")
emailid = input("Enter your email: ")
s.sendmail('&&&&&&&&&&&',emailid,msg)
a = input("Enter Your OTP >>: ")
if a == OTP:
print("Verified")
else:
print("Please Check your OTP again")*
