Time-based One-time Password is a popular and safe way of Two-Factor authentication. TOTP is a one-time password that is produced by an algorithm based on the current time and a secret key exchanged by the user and the service provider. To provide an extra degree of protection, the user can input the TOTP in addition to their standard login credentials.
In this article, we will discuss the importance of 2FA and the role of TOTP in enhancing security. We will also explore how TOTP works, its advantages, and various other methods of two-step verification.
What is Time-Based OTP (TOTP)?
TOTP or Time-based One-time Password is a type of two-factor authentication (2FA) method that adds an extra layer of security to online accounts.
When using Time-Based OTP, a user, first enters their username and password as usual. They are then prompted to enter a unique code generated by a TOTP app on their mobile device. The code changes every 30-60 seconds, making it much more difficult for hackers to gain access to an account.
How TOTP works?
Time-Based OTP algorithm works by combining a secret key known only to the user and the service provider with the current time to generate a unique password. The TOTP app on the user’s phone also knows the secret key. The app uses it to generate the same password as the service provider.
Because TOTP passwords are only valid for a limited time, they add an extra layer of security against attacks such as phishing. Phishing is an attack in which a hacker attempts to trick a user into disclosing their login credentials.
Even if a hacker intercepts a TOTP code, it will be rendered worthless after a few seconds, making account access considerably more difficult.
How is TOTP used?
TOTP is commonly used in conjunction with another authentication factor, such as a login and password. When a user signs in, they must enter a one-time password generated by a TOTP application in addition to their usual login credentials. Since the code is only valid for a limited time it provides better security than the traditional OTP.
online banking, email, and social networking accounts use TOTP as a common 2FA method to safeguard users’ accounts from unauthorized access and potential cyber risks.
Authenticator apps such as Microsoft Authenticator and Google Authenticator also use TOTP to generate verification codes.
Time-Based OTP works offline
Since the One-time passwords are generated using the stored secret key and current time, the TOTP algorithm doesn’t need to connect to any other external source for generating OTP.
This makes TOTP ideal for travelers who might need to access their authentication in a place where there is no internet facility available.
Time-Based OTP and 2FA
Two-factor authentication (2FA) is a security procedure that requires users to give two forms of identity before being able to access a service or application. TOTP is one of the most widely used 2FA techniques.
TOTP is a subset of 2FA, meaning it falls under two-factor authentication. Other authentication techniques covered by two-factor authentication include HOTP, biometric authentication, SMS authentication, and so on.
HOTP vs TOTP
HOTP (HMAC-Based One-Time Password) and TOTP (Time-based One-Time Password) are both two-factor authentication (2FA) systems that employ a one-time password. The primary distinction between the two approaches is how the one-time password is produced.
HMAC-Based OTP produces the one-time password using a secret key provided by the user and the service provider, as well as a counter value that increases with each usage. This implies that the same password can be used several times before the counter is reset.
Time-Based OTP, on the other hand, creates a one-time password using a secret key and the current time. It is more secure than a static password since the password changes every 30-60 seconds. TOTP is also more user-friendly than HOTP since it eliminates the need for the user to keep track of a counter value.
Overall, both the methods are viable for establishing two-factor authentication and can assist in improving online account security. The decision between the two approaches is determined by the service provider’s and user’s demands and requirements.
Conclusion
Let’s get a quick recap of what we learned today
- Two-factor Authentication (2FA) is an important part of digital security, and Time-based One-time Passwords (TOTP) are one means of increasing security.
- Time-Based OTP uses a mathematical algorithm that produces a unique password at regular intervals ( 30s commonly )
- It is frequently used for online services such as banking, email, and social media accounts.
- Time-Based OTP improves security by providing a layer of defense against assaults such as phishing and replay attacks.
It’s also worth noting the distinction between HOTP and TOTP, as well as the significance of employing 2FA in general to safeguard online accounts.
What is TOTP in Aadhar?
TOTP or time-based one-time passwords is an alternative to Aadhaar-based OTP. It can be used in case your mobile has no tower to receive the Aadhar-based OTP.
What is TOTP and how does it work?
Time-Based OTP or TOTP is a mathematical algorithm that produces a unique password at regular intervals.
Is TOTP better than OTP?
Yes TOTP is better than OTP because of the interval for which a TOTP is valid. It is also invulnerable to MITM attacks done by hackers.
Does TOTP work offline?
Yes TOTP works offline.
