RFC about deterministic cuckoo filter implementations

[jaromil]

Considering the 'unlinkable' design reference implementation does not provide a trusted and deterministic implementation of a cuckoo filter

reference_implementation/dp3t/protocols/unlinkable.py

Line 119 in fa2aafc

*Example only.* This data structure uses a simple Python cuckoo filter to

I'm opening this issue to ask for any pointers anyone here may have about reliable C implementations, possibly linked to academic papers.

On Github there are a couple repos worth looking:

• https://github.com/efficient/cuckoofilter (C++)
• https://github.com/begeekmyfriend/CuckooFilter (C)

Anything else? do we need to code one from scratch?