Loopback Interface Security for USB Data Encryption
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Solution Overview
Problem
Existing methods for securing and transmitting HTTP/IPP USB protocol data over USB connections lack encryption and authentication, making them vulnerable to data breaches, especially since USB connections can be easily detached and accessed by capture devices.
Innovation Solution
Implementing the IPSec protocol to encrypt and authenticate data between a host device and a client device using a USB connection, employing manual or automatic key configurations and loopback interfaces to ensure secure data transfer without relying on the network stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB connections are used for data transfer, then ease of operation and connectivity are improved, but security and data protection deteriorate due to easy detachment and capture device access
Solution Approach 1:
The patent applies preliminary anti-action by implementing IPSec encryption and authentication protocols before data transmission occurs over the USB connection. This preemptive security measure counteracts the inherent vulnerability of USB connections to unauthorized access and data capture, ensuring that even if physical access is gained, the encrypted data remains protected
Solution Approach 2:
The patent introduces an intermediary security layer (IPSec protocol stack) between the USB physical connection and the data transmission layer. This intermediary implements encryption, authentication, and security policies that mediate the data flow, protecting against the direct exposure of data on the USB interface
2Reliability
If IPSec protocol is implemented for security, then data confidentiality and integrity are improved, but device complexity increases
Solution Approach 1:
The patent leverages the universality of the IPSec protocol, which is a standardized protocol suite already widely implemented in networking systems. By reusing this existing multi-functional security framework (providing authentication, encryption, integrity checking, and replay protection), the patent avoids creating a custom complex security system while still achieving comprehensive data protection
Solution Approach 2:
The patent adapts the IPSec protocol design from network communications to USB communications by copying the security architecture and mechanisms. This allows leveraging the proven security model of IPSec without having to design and implement a new security system from scratch, reducing overall complexity
Data Source
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AI summary
A method of providing security for data using a loopback interface, the method includes setting a security policy on a host device and a client device, the security policy configuration including a first loopback interface and an IP address for the host device and a second loopback interface and an IP address for the client device; sending an IP packet to the first loopback interface on the host device, wherein the first loopback interface configures the packet to be routed to the second loopback interface; sending the IP packet from the first loopback interface to a security module on the host device for encryption pursuant to a security protocol; filtering the encrypted packet received from first loopback interface and configuring the encrypted packet be sent to the client device; and sending the encrypted packet from the host device to the client device.