End-to-End Encryption Architecture for Mobile Network Stability
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Solution Overview
Problem
Existing VPN technologies are costly and inefficient for mobile devices due to the need for fixed IP addresses and bandwidth, leading to frequent disconnections in dynamic mobile networks.
Innovation Solution
A secure end-to-end communication system using security devices with programmable cryptographic modules and interfaces, capable of encrypting and decrypting data packets, and managing keys to maintain secure connections across varying network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional VPN technology with IPsec is used to establish secure connections, then data security is improved, but connection stability deteriorates in mobile networks due to fixed IP address requirements
Solution Approach 1:
The patent implements dynamic key management where encryption keys are automatically updated and rotated based on session duration and security policies. The system transitions from static VPN key pairs to dynamic key generation, allowing connections to adapt to changing mobile network conditions while maintaining security. Keys are regenerated when devices move between network cells or after predetermined time intervals, ensuring continuous secure connectivity without requiring fixed IP addresses.
Solution Approach 2:
The system changes cryptographic parameters dynamically based on network conditions, device mobility, and security requirements. Encryption algorithms, key lengths, and protocol parameters are adjusted according to the security level needed and the stability of the connection. This allows the same infrastructure to serve both stationary and mobile devices with appropriate security configurations without requiring separate VPN setups.
2Reliability
If fixed IP addresses and data channels are required for VPN connections, then security is improved, but service cost increases due to premium rates charged by service providers
Solution Approach 1:
The patent extracts the security function from the network infrastructure layer and implements it at the application layer using end-to-end encryption. Instead of relying on network-provided fixed IP addresses and dedicated data channels for security, the system uses cryptographic protection that works over standard mobile data networks. This eliminates the need to purchase expensive fixed IP addresses and dedicated bandwidth while maintaining security through cryptographic means.
Solution Approach 2:
The system introduces cryptographic keys and certificates as intermediaries between communicating parties, replacing the need for dedicated network infrastructure. Public key infrastructure (PKI) and symmetric key exchange protocols act as mediators that provide security over shared, dynamic mobile network connections without requiring exclusive network resources or fixed addressing.
3Reliability
If traditional VPN technology is used, then encryption is provided, but device complexity increases due to the need for fixed infrastructure and protocol overhead
Solution Approach 1:
The system implements self-service key management where devices automatically generate, store, and manage their own cryptographic keys without requiring centralized VPN gateway infrastructure. Mobile devices perform key pair generation, certificate management, and encryption/decryption operations locally, eliminating the need for complex VPN server configurations and reducing overall system complexity while maintaining strong encryption.
4Reliability
If IPsec transactions are required to set up keys and encryption links, then security is improved, but connection flexibility deteriorates when users are moving
Solution Approach 1:
The system performs preliminary key establishment and security association setup before mobile devices need to move between network cells. Keys are pre-generated and cached, and security contexts are prepared in advance so that when mobility events occur, the device can seamlessly continue encryption without interrupting the connection to re-establish security. This preliminary preparation eliminates the need for IPsec re-keying during movement.
Data Source
AI summary
A secure end-to-end communication system is implemented via one or more security processing devices. In one embodiment, a method includes: loading, by a key manager, a first set of keys into a security device; encrypting first data with the first set of keys using the security device; and sending, over a network, the encrypted first data to an external site or a mobile device. The method may further include: requesting the encrypted data from the external site or mobile device; receiving, over the network, the encrypted first data; and decrypting the received encrypted first data with the first set of keys using the security device.