News for hackers. Stuff that matters.

A comment on Cellular outage in U.S. hits AT&T, T-Mobile and Verizon users. Parent comment

Re:Cellular outage in U.S. hits AT&T, T-Mobile and Verizon u... by zackkitzmiller on Friday February 23, 2024 @09:56AM (#39481280)
SMS 2FA and TOTP aren't mutually exclusive are they?

TOTP -> Time-based One Time Password SMS -> Delivery mechanism.

You can deliver TOTP over SMS.

Obviously, SMS shouldn't be used, but I was under the impression that the code generation mechanism and the code generation algorithms are completely disparate concepts.

[ Parent | on HN ]
Re:Cellular outage in U.S. hits AT&T, T-Mobile and Verizon u... by BenjiWiebe on Friday February 23, 2024 @10:08PM (#39488794)
Not sure I'm understanding you, but TOTP isn't delivered. It's generated locally/offline, based on the time and a private key that was set up when you first turned on TOTP 2FA.
[ Parent | on HN ]