Digital Image Security Modules for Tamper Verification

The patent divides the security functionality into two separate security modules: a first security module integrated in the camera for ensuring image integrity, and a second security module on a portable data carrier for authenticating the photographer's identity. This segmentation allows each module to specialize in one security aspect, thereby提高整体security standard without requiring a single complex module to handle all security functions.

The patent introduces a background system as an intermediary that stores public keys and facilitates the verification process. The background system receives verification requests, retrieves the appropriate public keys, and performs the cryptographic verification, thereby shielding the end user from the complexity of direct cryptographic operations while maintaining high reliability in authenticity verification.

The patent applies cryptographic linkages and digital signatures at the moment of image capture and storage, rather than performing verification only when needed. The first security module creates a cryptographic linkage between the image data and integrity information during capture, and the second security module authenticates the photographer's identity at the same time. This preliminary action ensures integrity and authenticity are embedded upfront, reducing the need for time-consuming verification processes later.