I use Aegis as my 2fa. Today on new token creation I observed that there’s hash function set to SHA-1, later checked all my tokens and the result is same type of encryption used for all. So I have edited all my tokens to SHA-256 as a result my totp doesn’t authenticate. Do I have to rescan my tokens for updating to SHA-256 or it doesn’t work like that?
Security: SHA-1 < SHA-256 < SHA-512
Speed: SHA-1 > SHA-256 > SHA-512
My doubts are: Why can’t we use SHA-256? Is it because TOTP requires less time so faster one(SHA-1) is chosen? Can we use SHA-256 for TOTPs?
It’s up to every individual website to use whatever specific type of hash function they want, so absent of really technical users that know how to change the cipher, they all just default to SHA-1 for maximum compatibility.
damn it.
correct