There is a similar function to map key_type_t and hasher_t to an OID, but this maps schemes directly (and to use the other function we'd have to have a function to map schemes to hash algorithms first).
There is a similar function to map key_type_t and hasher_t to an OID, but this maps schemes directly (and to use the other function we'd have to have a function to map schemes to hash algorithms first).