Software Radio Financial Transaction Security via Dual Network Segmentation

The patent divides the transmission of financial information into two separate segments: encryption keys are transmitted over a first radio network while encrypted data is transmitted over a second radio network. This segmentation ensures that even if one network is compromised, the attacker cannot obtain both the encryption key and the encrypted data needed to compromise security.

The patent introduces a financial institution's server as an intermediary that receives both the encryption key and encrypted data, performs the decryption operation, and then forwards the decrypted information to the destination. This intermediary approach allows the mobile device to maintain security by never exposing both keys and data in plaintext simultaneously.

The patent employs a universal mobile device capable of operating on multiple radio networks (GSM, CDMA, WCDMA, LTE, etc.). This multi-functional device can dynamically select and switch between different network types, allowing the system to use multiple networks for security purposes without requiring separate dedicated devices for each network type.

The patent implements dynamic network selection and switching capabilities, where the mobile device can adaptively choose which radio network to use based on availability, security requirements, and transaction type. The system dynamically assigns different networks for key transmission versus data transmission, providing flexibility and reducing operational complexity.