Encrypted RFID Tag Duplication Detection
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Solution Overview
Problem
RFID tag duplication poses a significant challenge in product authentication, allowing counterfeit items to be identified as genuine by duplicating the RFID tag data from a genuine item and writing it onto a counterfeit item, which existing technologies have not effectively addressed.
Innovation Solution
The implementation of encrypted RFID tags using asymmetric cryptography, where the sending party encodes an item identifier and sender identifier using the receiving party's public key, allowing only the receiving party to decode the information using their private key, and storing these identifiers locally to detect duplicate tags without relying on a central repository.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If RFID tag data is stored in plain text for easy reading and verification, then the ease of operation is improved, but the security against tag duplication is worsened
Solution Approach 1:
The patent transforms the RFID tag data from plain text to encrypted form, changing the parameter of data encoding. The sending party encodes the item identifier and sender identifier using the receiving party's public key, converting readable data into encrypted data that can only be decoded by the intended receiving party using their private key. This resolves the contradiction by maintaining ease of verification through proper cryptographic procedures while significantly improving security against tag duplication.
2Reliability
If a centralized repository is used to store and verify RFID tag identifiers, then the reliability of authentication is improved, but the device complexity is worsened
Solution Approach 1:
The patent extracts the authentication verification capability from a centralized repository and distributes it to individual receiving parties through asymmetric cryptography. Each receiving party possesses their own private key that enables them to independently verify RFID tag authenticity without needing to query a centralized database. This extraction eliminates the need for complex centralized infrastructure while maintaining high authentication reliability through decentralized cryptographic verification.
3Productivity
If RFID tag data is made accessible for supply chain tracking, then the productivity of supply chain management is improved, but the vulnerability to tag duplication attacks is worsened
Solution Approach 1:
The patent applies asymmetry in the form of asymmetric cryptography (public-key encryption) to the RFID tag data. The sending party uses the receiving party's public key to encode the data, creating an asymmetric encryption scheme where the encoding and decoding keys are different. This asymmetric approach enables efficient supply chain tracking as the encoded data can be freely transmitted and stored, while simultaneously protecting against tag duplication because only the intended receiving party with the corresponding private key can decode and verify the data authenticity.
Data Source
AI summary
A duplication detection module may be configured to determine if data on a RFID tag is encoded. If the data on the RFID tag is not encoded, the duplication detection module may determine that the RFID tag is a duplicate RFID tag and that an item associated with the duplicate RFID tag is counterfeit. If the data on the RFID tag is encoded, the duplication detection module may cause the decoder to decode the data on the RFID tag using a private key of a receiving party as a decoding parameter. The module may check for an item identifier and a sender identifier as a part of the encoded data, determine whether the item identifier has previously been read to determine if the RFID tag was duplicated during transport and compare the sender identifier with an expected sender identifier to determine if the RFID tag was duplicated during transport.