What is TOTP and what do I use it for?
TOTP stands for Time-based One-time Password Algorithm. This is a procedure for two-factor authentication.
With this procedure, a QR code is displayed on an application page after 2FA has been activated using a time-based password. This code must be scanned with a hardware TOTP generator or via a software solution.
The 2fa is now activated using TOTP.
A field for entering the code now appears on this application page each time you log in. This is displayed using the TOTP hardware device after selecting the page on the device. The user now has 30 seconds to enter this code on the page.
Technically, it is based on a cryptographic hash function in which a key is calculated between the sender and recipient.
No additional hardware token is required for a software solution. This software solution can be mapped via an app for smartphones, tablets or notebooks. Corresponding apps can be downloaded from app stores.
However, the clear recommendation is a hardware TOTP device. It is much more secure as it is a stand-alone device without an internet connection.
Open standard and free from patents
The most secure 2fa method with physical hardware, as the device cannot be attacked
The code is only valid for 30 seconds, after which a newly generated code must be entered
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