Manufacturing Record Digest Registration for Tamper-Proof Quality Verification
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Solution Overview
Problem
Current manufacturing process management systems lack an efficient method to securely manage and verify manufacturing process information, particularly in ensuring product quality and preventing tampering, especially when disclosure of inspection records and audit trails is restricted.
Innovation Solution
A registration apparatus computes and stores digest values of manufacturing process information in association with product and item identification information, allowing a reference apparatus to determine the existence of this information without revealing the actual data, thus ensuring product quality and preventing tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manufacturing process information is disclosed to verify product quality, then product quality verification is improved, but data security and prevention of unauthorized access deteriorate
Solution Approach 1:
The patent extracts only the essential verification element (digest value) from the complete manufacturing process information and stores it separately in a distributed ledger. This allows quality verification without exposing the actual manufacturing data, thus resolving the contradiction between verification needs and data security.
Solution Approach 2:
The digest value acts as an intermediary between the manufacturing process information and the verification system. It enables quality verification while preventing direct access to the actual manufacturing data, thereby maintaining both reliability and security.
2Measurement precision
If complete manufacturing process information is stored for verification, then verification accuracy is improved, but system complexity and storage requirements deteriorate
Solution Approach 1:
The patent extracts only the digest value (hash) of the manufacturing process information and stores it in the distributed ledger, rather than storing the complete information. This maintains verification accuracy while dramatically reducing storage requirements and system complexity.
Solution Approach 2:
The patent transforms the manufacturing process information into a different parameter form (digest value/hash) that preserves verification capability while reducing data size and complexity for storage in the distributed ledger.
3Reliability
If manufacturing process information is made accessible for quality assurance, then product quality is improved, but data integrity and prevention of tampering deteriorate
Solution Approach 1:
The digest value stored in the distributed ledger serves as an immutable intermediary that verifies data integrity. Any tampering with the original manufacturing process information would result in a different digest value, immediately detectable against the stored hash, thus maintaining both quality assurance and data integrity.
Solution Approach 2:
The patent creates a cryptographic copy (digest value/hash) of the manufacturing process information and stores it in the distributed ledger. This copy verifies the authenticity and integrity of the original data without exposing it to tampering risks.
Data Source
AI summary
A registration apparatus (2100) acquires product identification information, which is identification information of a product to be registered, item identification information, which is identification information of an item related to a manufacturing process, and manufacturing process information related to the item corresponding to the acquired item identification information among the manufacturing process information related to the manufacturing process of the product. The registration apparatus (2100) computes a digest value of the acquired manufacturing process information. The registration apparatus (2100) puts the computed digest value in a storage unit (2300) in association with the acquired product identification information and the acquired item identification information.