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Date: Fri, 29 Mar 2019 19:03:21 +0300
From: Anton Dedov <adedov@...il.com>
To: passwords@...ts.openwall.com
Subject: UX/security of TOTP configuration process
Hello folks!
A question on implementing TOTP 2FA in an application.
Is it ok to ask users to backup TOTP secret in a secure place during 2fa
configuration process? Or it's better to provide one-time recovery codes?
The argument against TOTP secret backup can be an assumption that if the
secret leak it can be maliciously used without victim user ever noticing it.
--
Anton Dedov
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