OTP Verification Process Explained in Detail
Introduction
The OTP verification process is a crucial security mechanism used to authenticate users and prevent unauthorized access. This process ensures that only the intended user can complete an action by verifying a one-time password (OTP) sent via SMS, email, or an authentication app. In this guide, we will break down the OTP verification process, including generating, validating, and handling OTP changes efficiently.
1. User Input
When a user initiates an action requiring authentication, they receive an OTP through their registered mobile number or email. The user then enters this OTP in the designated field within the application.
2. Generate an OTP
On the server side, an OTP is generated using a secure algorithm and sent to the user via a trusted third-party API when they click the “Get OTP” button. The OTP is time-sensitive and typically expires within a few minutes for security reasons.
3. Validation
Once the user enters the OTP, the system must validate it to confirm authenticity. Below is the JavaScript code for validating the OTP:
Put the OTP in the OTP field with the validate OTP button. If the validate-otp-by-number API returns success, then display the matched message and add a class isValidateOtp; else, throw an error.
“`javascript
$(‘.validate-otp’).once().click(function (e) {
var mobile_element = $(‘.mobile-number’);
var mobileNumber = mobile_element.val();
var otp = $(‘.otp’).val();
var data = [otp, mobileNumber];
if (/^\d{5,}$/.test(mobile_element.val())) {
$(‘.error-otp’).empty();
$.ajax({
type: ‘POST’,
url: ‘/validate-otp-by-number/’ + data,
dataType: “json”,
cache: false,
success: function (result) {
if(result.status == ‘success’) {
$(‘.otp’).addClass(‘isValidateOtp’);
$(‘.otp’).append(‘‘+result.message+’‘);
} else {
$(‘.otp’).append(‘‘+result.message+’‘);
}
}
});
}
});
“`
4. Handling Changes in Mobile Number
If the user changes their registered mobile number, the previously validated OTP should no longer be valid. To handle this scenario, remove the validation class when the number is modified:
“`javascript
jQuery(‘.mobile-number’).change(function(){
$(‘.otp’).removeClass(‘isValidateOtp’);
});
“`
Conclusion
The OTP verification process is essential for securing user authentication and preventing unauthorized access. By implementing proper validation and security measures, organizations can ensure a seamless and safe user experience.
Additionally, applying formal methods in program development enhances the reliability and efficiency of authentication systems. As security threats evolve, continuously refining OTP-based authentication techniques will remain critical in safeguarding user data.
Do you like to read more educational content? Read our blogs at Cloudastra Technologies or contact us for business enquiry at Cloudastra Contact Us.