Just take the string as bytes and hash it ffs
The problem is that you (hopefully) hash the passwords, so they all end up with the same length.
And sure, in theory your hashing browser-side could break if you do that. Depending on how much text the user pastes in. But at that point, it’s no longer your problem but the browser’s. 🦹
If you hash in the browser it means you don’t salt your hash. You should absolutely salt your hash, not doing so makes your hashes very little better than plaintext.
If you hash in the browser it means you don’t salt your hash. You should absolutely salt your hash, not doing so makes your hashes very little better than plaintext.
That’s not true. If they send hashed password you could salt/hash again on server if you’re trying to keep the salt “secret”. Their hash should always be the same if they’ve submitted the same password. You’d just be hashing a hash in that case… but it’s the same premise.
Why are you hasing in the browser?
Also, what hashing algorithm would break with large input?
Why would you not hash in the browser. Doing so makes sure the plaintext password never even gets to the server while still providing the same security.
Edit: I seem to be getting downvoted… Bitwarden does exactly what I described above and I presume they know more than y’all in terms of security https://bitwarden.com/help/what-encryption-is-used/#pbkdf2
bcrypt has a maximum password length of 72 bytes.
https://en.wikipedia.org/wiki/Bcrypt#Maximum_password_length
At minimum you need to limit the request size to avoid DOS attacks and such. But obviously that would be a much larger limit than anyone would use for a password.
