Box-Shaped Circuit Board for Physical Tamper Protection

The patent applies preliminary anti-action by pre-configuring a destruction circuit that automatically activates when physical tampering is detected. Before an attacker can extract encryption keys from the memory device, the destruction circuit erases the data, preventing the harmful effect of physical attacks. This is achieved through tamper-detection sensors connected to destruction circuits that are wired to critical data storage elements.

The patent converts the harmful effect of physical attacks into a beneficial security feature. When physical tampering is detected, the system intentionally destroys the encryption keys, transforming the attacker's harmful action into a security reinforcement mechanism. The physical attack itself triggers the data destruction, making the system stronger against such attacks.

The patent applies local quality by creating a circuit board with non-uniform thickness - thin at the center where flexibility and routing are needed, and thick at the periphery where physical protection is required. This localized variation in structural properties provides enhanced protection for critical elements while maintaining manufacturability through standard PCB fabrication techniques that can handle variable thickness designs.

The patent moves the protection mechanism from a two-dimensional planar structure to a three-dimensional box-shaped structure with varying thickness. By adding the vertical dimension (thickness variation) to the traditional flat circuit board, the design provides physical protection through the thick peripheral walls while maintaining the functional routing layers in the thin center region.