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Behind the 6-digit code: Building HOTP and TOTP from scratch

(blog.dogac.dev)
250 points dogacel | 1 comments | 11 Apr 25 13:06 UTC | HN request time: 0.204s | source
1. nikolayasdf123 ◴[15 Apr 25 03:16 UTC] No.43688675[source]▶
yep, it is just couple lines of code and nice math behind it