How is the hash computed for various home-assistant_v2.db entries

I need to manually various entries in the state_attributes database but there is a ‘hash’ column which I imagine is a hash of the shared_data column (???).

What hash function is used?
Someone mentioned possibly MurmurHash2 in which case what seed is used?
If not MurmurHash2 what hash is used and what if any seeds are necessary?