Secure logic system and method for operating a secure logic system

A secure logic system includes a physically unclonable function, a physically unclonable function configuration register, and an encryption circuit. The physically unclonable function establishes an encryption string according to at least partial random physical characteristics of the physically unclonable function. The physically unclonable function configuration register is coupled to the physically unclonable function, and load the encryption string from the physically unclonable function. The encryption circuit is coupled to the physically unclonable function configuration register, and manipulates a system string with the encryption string to generate encrypted data.