|
|
|
|
|
|
by ubernostrum
2924 days ago
|
|
|
I maintain a library that talks to the Have I Been Pwned password database, which uses a 5-hexadecimal-digit prefix of the SHA1 hash. Someone filed a PR asking to add a cache for HIBP's responses, and I did some quick math and came up with ~1200 as a birthday-paradox number for the first five digits of a SHA1 hex digest (assuming uniform/random distribution of hex digits). |
|
|