Anti-physical clone equipment authentication system and method based on lightweight SPONGENT Hash algorithm

The invention provides an anti-physical cloning equipment authentication system and an anti-physical cloning equipment authentication method based on a lightweight SPONGENT Hash algorithm, a novel physical unclonable function (PUF) of a hardware security technology is applied to an equipment end, and a reliable response bit is generated or recovered from an original response of the PUF as a key by introducing a reliable bit flag of the PUF. The key is then used as an input of a SPONGENT hash algorithm to generate a one-way irreversible and fixed-bit hash value for an authentication process. According to the method, the physical unclonable function and the lightweight SPONGENT Hash algorithm are applied to the bidirectional authentication process, so that the security of the secret key is improved, the unclonability of the equipment end is ensured, the collision resistance of the Hash function is enhanced, eavesdropping attacks and fake name attacks can be effectively prevented, and the security of an authenti