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//Article
Two-Factor Authentication: How Those Six-Digit TOTP Codes Actually Work
Blog Summary
Your authenticator app and the server agree on the same six digits with no network at all. Here's the shared secret, the 30-second clock and the HMAC behind it, plus where 2FA is strong and where it isn't.
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01. About Shiroz
Mohammed Shiroz
Hi, I'm Mohammed Shiroz, a software engineer and AI enthusiast from Sri Lanka who turns ideas into intelligent, real-world solutions. With over 9 years of hands-on experience, I currently lead real estate ERP development at Kate Group, a...
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United States
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Russia