Random Code Encryption for Door Access Security
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Solution Overview
Problem
Existing door access control systems using a master key for encryption are vulnerable to unauthorized access due to the ease of key capture, compromising safety.
Innovation Solution
A communication system employing a random code generated by a second terminal for encryption, replacing the master key to enhance data transmission security, where the random code is varied for each message transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a master key is used for encryption in door access control systems, then the encryption process is simple and efficient, but the system becomes vulnerable to unauthorized access due to ease of key capture
Solution Approach 1:
The patent applies dynamics by transitioning from a static master key to a dynamic random code that changes with each communication session. The random code generator creates unique encryption keys for each message transmission, making the encryption process adaptive and resistant to capture while maintaining operational efficiency.
Solution Approach 2:
The patent changes the encryption parameter from a fixed master key to a variable random code. By generating different random codes for each communication session, the system maintains encryption efficiency while significantly improving security against unauthorized access and key capture.
2Reliability
If a random code is used for encryption instead of a master key, then data transmission security is significantly improved, but the system complexity increases due to additional generation and management processes
Solution Approach 1:
The patent implements self-service by enabling the terminals to autonomously generate and manage random codes without requiring external key distribution infrastructure. Each terminal independently creates its own random encryption keys, simplifying the overall system architecture while maintaining high security standards.
Solution Approach 2:
The patent uses the random code as an intermediary between the master key and the encrypted message. The random code serves as a temporary, session-specific key that bridges the security requirements without exposing the master key, thereby reducing system complexity while maintaining security.
3Ease of operation
If the master key is stored in both terminals for mutual encryption and decryption, then communication is convenient and fast, but the risk of key capture and unauthorized intrusion increases
Solution Approach 1:
The patent makes the encryption key dynamic by using randomly generated codes that change with each communication session. This dynamic approach maintains communication convenience through automated key generation while eliminating the static vulnerability of stored master keys that could be captured and misused.
Solution Approach 2:
The patent performs preliminary action by generating random codes before each communication session. This pre-generation of unique encryption keys ensures convenient and fast communication while preventing key capture risks, as each session uses a fresh, unpredictable key that cannot be compromised from previous sessions.
Data Source
AI summary
A communication system using a random code as an encryption code is disclosed. A first terminal transfers a request to the second terminal for providing a random code (rKey). The random code is used to encrypt commands in the proceeding communication process instead of using a master key (mKey) so as to avoid that the master key (mKey) is captured. The safety in data transmission is promoted greatly. In practical use, the encryption way can be used to a door access system which includes a mobile phone, a card reader, a door access controller, and a server program (such as ACX server program). The communication system using a random code as an encryption code assures that the communications between these devices are highly safe.