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by Havoc 322 days ago
One can really sense the pain just reading the headings

Also a crypto library that limits passwords to 72 bytes? That’s wild

1 comments

It's written with constant memory allocation in mind. Silly of them to use such a small buffer though, make it a configuration option.
No, it's due to the construction of bcrypt - it ends up using the password more or less directly as the key for blowfish (the underlying cipher) which is why the limit is there. Check wikipedia for details.
I assumed all hashes are in O(1) space? Is there any that’s not?