Understanding Have I Been Pwned's Use of SHA-1 and k-Anonymity
Troy Hunt
JUNE 30, 2022
Every time this very blog loads Font Awesome from Cloudflare's CDN, for example, it's verified against the hash in the integrity attribute of the script tag (view source for yourself). In that SHA-1 example, the finite number is 16^40 as there are 16 possible values (0-9 and a-f) and 40 positions for them.
123 
Let's personalize your content