argon2: avoid salt-length related panic (closes #134) #135
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Adds some additional advance checks that Argon2 parameters are within range, and returns errors in the event they are not.
This prevents a panic caused by what was previously an
unimplemented!
call when converting error types.The occurrence of the panic in the first place speaks to overall deficiencies in the
password-hash
crate's error handling strategy.It's further complicated by the awkwardness of the
password_hash::Output::init_with
API.The code in this commit has TODOs for addressing the above, but it'd be good to open issues upstream on the
password-hash
crate about these problems, and ideally update the TODOs in the code with references to the issues.cc @izik1