Tamper-Resistant Software Provenance via Validation Record Chain
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Solution Overview
Problem
Software development processes lack efficient methods to track and verify the provenance of software packages across multiple control points, particularly in ensuring compliance with regulations like Sarbanes-Oxley, which requires documenting tests and assertions in a tamper-resistant manner.
Innovation Solution
The implementation of a validation record chain using digitally signed validation status certificates and time certificates, where each control point generates a certificate that is linked to previous ones via hash signatures, creating a chain that ensures the integrity and authenticity of the software package's development history.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional document-based tracking methods are used for software development control points, then implementation simplicity is maintained, but reliability and tamper-resistance of provenance records deteriorate
Solution Approach 1:
The validation record chain segments the software development process into discrete control points, each generating an individual validation record. Each record contains a hash of the previous record, creating a chain structure where tampering with any single record would be detectable. This segmentation approach maintains reliability while managing complexity through modular organization of validation activities.
Solution Approach 2:
The patent replaces traditional mechanical/document-based tracking systems with cryptographic hash functions and digital signatures. Instead of relying on physical document integrity or manual verification processes, the system uses mathematical hash algorithms to create tamper-evident records, significantly improving reliability without requiring complex physical security measures.
2Reliability
If multiple control points with detailed documentation requirements are implemented, then compliance with regulations like Sarbanes-Oxley is improved, but productivity and ease of operation deteriorate
Solution Approach 1:
The system performs preliminary validation at each control point by automatically generating validation records with embedded hashes before the software package progresses to the next stage. This preliminary action ensures compliance requirements are met upfront rather than requiring extensive post-hoc documentation, thereby maintaining productivity while ensuring compliance verification.
Solution Approach 2:
Each validation record automatically contains a hash of the previous record, creating self-verifying documentation that proves the software package passed all required control points without external verification. This self-service approach eliminates the need for manual compliance auditing, improving both compliance verification reliability and development throughput.
3Measurement precision
If manual tracking and verification of software provenance are used, then ease of operation is maintained, but measurement precision and detection capability of tampering deteriorate
Solution Approach 1:
The patent replaces manual tracking operations with automated cryptographic verification. Hash functions provide precise detection of any tampering with validation records, as even minor modifications would produce completely different hash values. This substitution maintains operational simplicity through automated processes while dramatically improving tampering detection accuracy compared to manual methods.
Solution Approach 2:
The validation record chain implements continuous feedback through hash verification at each control point. Each record contains and verifies the hash of the previous record, creating an automatic feedback mechanism that immediately detects tampering. This feedback system provides precise measurement of record integrity while requiring minimal operational intervention, as verification occurs automatically through the chain structure.
Data Source
AI summary
A validation record chain that is generated for a particular version of a software package may be used to verify the legitimacy of the particular version. A hash that is generated by a software building platform for a particular version of a software package is received. A validation record chain for the particular version is then generated that includes a plurality of certificates such that a first certificate in the validation record chain contains the hash, and each of one or more subsequent certificates is signed with a corresponding hash signature of a corresponding certifier application and contains a prior hash signature of a previous certificate in the validation record chain. The validation record chain is stored for validation of the particular version of the software package via the plurality of certificates.