UHF RFID Tag ID Encryption for Anti-Tracking Authentication
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Solution Overview
Problem
Current UHF RFID security authentication methods, such as ISO 18000-6C and GB/T29768, are vulnerable to data reproduction and unauthorized tracking due to the cleartext transmission of electronic tag identification numbers, posing a security hazard, especially in vehicle-related applications.
Innovation Solution
A method that encrypts the electronic tag identification number using a random number and batch key, performing XOR operations and symmetric encryption to return an encrypted ID, ensuring only authorized devices can decrypt and authenticate, employing a double-key mechanism for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic tag identification number is transmitted in cleartext form for authentication, then the authentication process is simple and fast, but the identification number becomes vulnerable to unauthorized reading and tracking
Solution Approach 1:
The patent introduces an intermediary encryption mechanism where the identification number is transformed into an encrypted form through cryptographic operations before transmission. The read-write device and electronic tag both possess decryption capabilities, allowing them to verify authenticity without exposing the raw identification number to potential eavesdroppers or unauthorized readers.
Solution Approach 2:
The patent changes the state of the identification number from plaintext to encrypted text through cryptographic parameter transformation. This parameter change ensures that the identification number cannot be directly read or tracked by unauthorized devices, while still allowing authenticated devices to access the information through proper decryption procedures.
2Object-affected harmful factors
If the identification number is encrypted to prevent unauthorized access, then security is improved, but the authentication process becomes more complex
Solution Approach 1:
The patent implements preliminary encryption of the identification number before authentication occurs. The electronic tag pre-processes the identification number into an encrypted form, and the read-write device pre-configures decryption keys and algorithms. This preliminary action streamlines the actual authentication process, as the complex cryptographic operations are performed in advance rather than during the authentication interaction.
3Productivity
If cleartext transmission is used for long-distance communication, then communication efficiency is maintained, but privacy protection and information security are compromised
Solution Approach 1:
The patent introduces encryption as an intermediary layer that wraps around the identification number during transmission. This intermediary mechanism allows the data to travel across long distances through wireless communication while maintaining security, as the encrypted form cannot be meaningfully interpreted by unauthorized interceptors even if captured during transmission.
Data Source
Figure 1~2
AI summary
Disclosed is a method for security authentication that hides an ultrahigh-frequency electronic tag identification number. In the method for security authentication, by performing random number encryption on an electronic tag identification number TID and then returning same in the form of ciphertext, an unauthorized read-write device can be effectively prevented from obtaining TID information and performing unauthorized tracking and identity recognition of an object identified by the electronic tag. Meanwhile, the authentication method can effectively resist attacks such as eavesdropping, counterfeiting and replaying, and has advantages of preventing electronic tag information from being stolen and preventing tag forgery, etc. The method for security authentication uses a national cryptographic symmetric encryption algorithm and adopts a double-key and secondary authentication mechanism, thereby achieving validity verification of an electronic tag for the same key for batch cards and bidirectional security verification of a single key with a single tag.