JH-based HKDF and PBKDF2 errors

[pedroalbanese]

Greetings!

Could you tell me why I can't perform key derivation functions with the JH algorithm, as is possible with the other algorithms?

I mean, I don't know if it's the implementation or if it's a restriction of the algorithm itself, but it requires 32-byte salt for the PBKDF2 function and 32-byte info for the HKDF function.

Would it be possible to remedy this or is there another way to get around this limitation? How to proceed?

Thank you in advance.