Access Authentication and Key Distribution Using Physically Unclonable Functions, with SHA-256 as an Example

Access authentication and key distribution using physically unclonable functions, using SHA-256 as an example, are considered. The main advantages of using superlattices based on physically unclonable functions are presented. Also presented is an approximate algorithm for software implementation of the presented SHA-256 example. The use of physically unclonable SLP grid functions can make the system more resistant to various types of attacks, including attacks based on brute force or full access to the system. The use of superlattices for authentication of access and key distribution using physically non-cloned functions can provide an additional level of security, especially in the context of resistance to quantum attacks. The reliability of superlattices in authentication and key distribution depends on the specific type of superlattice, its properties and the cryptographic protocols used. The use of SLP (Stochastic Logic Processor) superlattices as an encryption method using physically unclonable functions will allow the generation of unique keys.