Right. But there are properties that can be proven about a given hash function that give us more faith that no collision can be efficiently found: https://en.m.

Right. But there are properties that can be proven about a given hash function that give us more faith that no collision can be efficiently found: https://en.m.wikipedia.org/wiki/Security_of_cryptographic_hash_functions#Provably_secure_hash_functions https://en.m.wikipedia.org/wiki/Security_of_cryptographic_ha...