RFID Item Tracing with Identity-Based Encryption for Supply Chain Secrecy
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Solution Overview
Problem
Current product tracing solutions fail to ensure supply chain privacy and can react slowly to recalls due to high communications overhead, making it difficult for producers to protect their logistics and product capabilities.
Innovation Solution
Implementing an identity-based encryption scheme using RFID tags, where item information is encrypted with a batch number as the encryption key, allowing re-encryption and decryption by producers along the supply chain, maintaining secrecy and enabling fast recalls without extensive communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If product tracing information is made publicly available, then traceability is improved, but supply chain privacy is compromised
Solution Approach 1:
The patent segments product tracing information into multiple encrypted portions stored on RFID tags along the supply chain. Each supplier holds a fragment of the complete tracing data, encrypted with their own key. No single entity can access the complete information, thereby maintaining supply chain privacy while enabling product traceability when needed.
Solution Approach 2:
The patent introduces an intermediary decryption mechanism where a trusted third party or authorized entity can combine multiple encrypted fragments to reconstruct the complete product tracing information. This intermediary approach allows traceability to be achieved without exposing sensitive supply chain data to competitors or unauthorized parties.
2Reliability
If traditional product tracing systems are used, then product recall capability is achieved, but communications overhead is enormous and reaction time is slow
Solution Approach 1:
The patent implements preliminary action by pre-encrypting product tracing information with each supplier's key and storing it on RFID tags as products move through the supply chain. When a recall is needed, the system can immediately identify affected batches and notify relevant parties without requiring extensive communication protocols, thereby reducing recall reaction time significantly.
Solution Approach 2:
The patent enables self-service recall capability where each supplier can independently decrypt and act on recall information stored on RFID tags using their own keys. This eliminates the need for centralized communication coordination during recalls, allowing faster autonomous response from each supply chain participant.
3Loss of information
If encrypted item information is stored on RFID tags, then supply chain secrecy is maintained, but decryption key management complexity increases
Solution Approach 1:
The patent segments the decryption key management into individual supplier-specific keys, where each supplier only needs to manage their own key rather than a centralized key system. This segmentation simplifies key management for each participant while maintaining overall supply chain secrecy through distributed encryption.
Data Source
AI summary
A method for tracing an item may include encrypting item information using an identity-based encryption scheme with a batch number for an item as an encryption key and communicating the encrypted item information for storage on a radio frequency identification (RFID) tag for attachment to the item.