Measurement Data Block Chaining for Tamper-Resistant Verification
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Solution Overview
Problem
Existing methods for recording and verifying measurement data are vulnerable to manipulation and require significant storage resources.
Innovation Solution
The method involves grouping measurement data into blocks where each block contains at least one shared measurement value, allowing blocks to be chained together, and calculating signature values for each block to protect against undetected deletion and reduce storage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement data is stored in separate blocks with individual signatures, then verification of each block is straightforward, but the storage requirements increase and manipulation becomes easier
Solution Approach 1:
The patent merges adjacent measurement blocks by having each block contain at least one measurement value that is also contained in another block. This overlapping structure combines multiple blocks into a chain where each block serves dual purposes: storing its own measurements and providing verification for adjacent blocks through shared values.
Solution Approach 2:
The patent performs preliminary action by pre-calculating and storing signature values for blocks before verification occurs. The signature values are computed in advance based on the block contents and stored alongside the measurement data, enabling rapid verification without recomputing signatures during the verification phase.
2Quantity of substance
If each block contains unique measurement values, then storage efficiency is improved, but detection of block deletion becomes difficult
Solution Approach 1:
By merging blocks through shared measurement values, the patent creates an interdependent structure where deletion of any block breaks the chain of shared values. This makes manipulation detection easier while maintaining storage efficiency, as the overlap provides verification capability without duplicating entire blocks.
3Reliability
If blocks are chained with shared measurement values, then manipulation detection is enhanced, but the complexity of the verification process increases
Solution Approach 1:
The patent segments the verification process into simple, repeatable steps: for each block, verify its signature and check that its shared measurement values match adjacent blocks. This segmentation breaks down the complex verification task into manageable units that can be processed systematically, reducing overall complexity.
4Reliability
If measurement data is protected with signatures, then data integrity is improved, but storage requirements increase
Solution Approach 1:
The patent merges the functions of multiple blocks by having them share measurement values, which reduces the total number of unique measurements that need to be stored. This merging approach maintains data protection through signatures while reducing overall storage requirements compared to completely separate blocks.
Data Source
Figure 1
Figure 2~3
AI summary
The invention generally proposes a method for recording a field (1) of measured values (2), in which the measured values (2) are grouped into blocks (5) and signature values (6) are calculated for each block (5), wherein at least one block (5a) contains a measured value (2') that is also contained in at least one other block (5b). Such a method can be carried out in particular with a measuring arrangement (21), recording device (15) and verification device (18) according to the invention (see Fig. 1).