POS Payment Key Distribution via TLS and Local Certificates

The patent introduces a payment key distribution mechanism that acts as an intermediary between discrete devices. Instead of requiring pre-programmed shared secrets or direct device pairing, the system uses a centralized key distribution approach where payment keys are distributed to multiple discrete devices through a secure channel. This intermediary mechanism enables flexible device combinations while maintaining security without requiring complex peer-to-peer authentication protocols between each device pair.

The patent applies preliminary action by distributing payment keys to discrete devices before they are needed for transactions. The key distribution occurs in advance through a secure provisioning process, so that when transactions occur, the devices already possess the necessary encryption keys. This eliminates the need for real-time key exchange or additional encryption layer setup during transactions, thereby maintaining security while minimizing transaction latency.

The patent implements local quality by enabling discrete devices to store and use payment keys locally after initial distribution. Once keys are provisioned to the devices, they can operate independently without requiring continuous internet connectivity. The system is designed so that security management occurs locally at the device level rather than requiring constant remote verification, thereby maintaining security management capabilities while ensuring system availability even when internet connection is interrupted.