Digital Signature Verification for Anti-Counterfeit Electronic Devices

The patent replaces physical mechanical anti-counterfeiting labels with a digital cryptographic verification system. Instead of relying on physical labels that can be torn or copied, the system uses digital signatures generated through asymmetric encryption algorithms to verify device authenticity, making the verification process immune to physical tampering

The patent transforms the anti-counterfeiting verification from a physical state (labels) to a cryptographic parameter state (digital signatures). By changing the verification parameters from physical characteristics to cryptographic mathematical properties, the system achieves higher reliability against tampering and copying

The patent applies asymmetric encryption where the device holds a private key that is mathematically related but not identical to the public key stored in the verification server. This asymmetric relationship ensures that while the server can verify authenticity using the public key, counterfeiters cannot replicate the digital signature without the private key, preventing serial number copying

The patent creates a one-way cryptographic binding where the device identifier is transformed into a digital signature through cryptographic operations. This process makes it computationally infeasible to reverse-engineer or copy the signature, as the cryptographic function is designed to be easy to compute in one direction but extremely difficult to invert