GaloisInc/cryptol-specs
Mar 2025 – May 2025
3 Months active
Languages Used
CryCryptolSAW Script
Technical Skills
CryptographyDocumentationFormal VerificationHMACSHA-1SHA-2
Eric Mertens
PROFILE
Eric Mertens
Over three months, Eric Mertens enhanced the GaloisInc/cryptol-specs repository by developing parameterized HMAC specifications with SHA-1 and SHA-2 instantiations, implementing XTS mode support for AES-128 and AES-256, and introducing SAW-based verification scripts for AES correctness. He used Cryptol, SAW Script, and formal verification techniques to align cryptographic primitives with industry standards, improve test coverage, and ensure reliable interoperability. His work included RFC-aligned test vectors, FIPS-compliant bug fixes, and comprehensive documentation updates. By establishing reusable verification frameworks and focusing on standards compliance, Eric delivered robust, maintainable cryptographic components that reduce risk and support secure deployments.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
5Total
Bugs
2
Commits
5
Features
3
Lines of code
1,147
Activity Months3
Your Network
8 people
Work History
May 2025
1 Commits • 1 Features
May 1, 2025Month: 2025-05 Key features delivered: Implemented SAW-based verification scripts to prove aesIsCorrect for AES-128/192/256 in GaloisInc/cryptol-specs, with accompanying README documenting usage and verification workflow. Centralized in commit ce995d35614640c64cb62c4600c46769093739bc (#294) for traceability. Major bugs fixed: None reported this month. Overall impact: Strengthens formal verification of cryptographic primitives, improving confidence in AES correctness, reducing risk for deployments, and enabling repeatable verification across AES variants. Technologies/skills demonstrated: SAW, Cryptol-specs, formal verification scripting, cryptographic proof discipline, documentation, and commit-based traceability.
1 Commits • 1 Features
May 1, 2025Month: 2025-05 Key features delivered: Implemented SAW-based verification scripts to prove aesIsCorrect for AES-128/192/256 in GaloisInc/cryptol-specs, with accompanying README documenting usage and verification workflow. Centralized in commit ce995d35614640c64cb62c4600c46769093739bc (#294) for traceability. Major bugs fixed: None reported this month. Overall impact: Strengthens formal verification of cryptographic primitives, improving confidence in AES correctness, reducing risk for deployments, and enabling repeatable verification across AES variants. Technologies/skills demonstrated: SAW, Cryptol-specs, formal verification scripting, cryptographic proof discipline, documentation, and commit-based traceability.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for GaloisInc/cryptol-specs: Delivered XTS mode support with AES-128/256, including instantiation scaffolding and standards-based test vectors, expanding cryptographic capabilities and aligning with best practices for data-at-rest encryption. No major bugs fixed this month; the focus was on feature delivery and test coverage to bolster security and interoperability. This work strengthens security posture and readiness for deployment.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for GaloisInc/cryptol-specs: Delivered XTS mode support with AES-128/256, including instantiation scaffolding and standards-based test vectors, expanding cryptographic capabilities and aligning with best practices for data-at-rest encryption. No major bugs fixed this month; the focus was on feature delivery and test coverage to bolster security and interoperability. This work strengthens security posture and readiness for deployment.
March 2025
3 Commits • 1 Features
Mar 1, 2025Monthly summary for 2025-03 (GaloisInc/cryptol-specs): Delivered key cryptographic spec enhancements and critical fixes that improve standards compliance, testing, and maintainability. Highlights include parameterized HMAC specification with SHA-1 and SHA-2 instantiations, core HMAC spec and RFC-aligned test vectors; a bug fix correcting the SHA-2 message length upper bound to align with FIPS-180-4; and a documentation polish addressing a header typo in ECDSA_P521_SHA3_512.cry. These changes strengthen interoperability, reduce risk in security tooling, and improve developer productivity through clearer docs and verified test coverage.
3 Commits • 1 Features
Mar 1, 2025Monthly summary for 2025-03 (GaloisInc/cryptol-specs): Delivered key cryptographic spec enhancements and critical fixes that improve standards compliance, testing, and maintainability. Highlights include parameterized HMAC specification with SHA-1 and SHA-2 instantiations, core HMAC spec and RFC-aligned test vectors; a bug fix correcting the SHA-2 message length upper bound to align with FIPS-180-4; and a documentation polish addressing a header typo in ECDSA_P521_SHA3_512.cry. These changes strengthen interoperability, reduce risk in security tooling, and improve developer productivity through clearer docs and verified test coverage.
March 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance88.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CryCryptolSAW Script
Technical Skills
AESBlock Cipher ModesCryptographic AlgorithmsCryptographyCryptolDocumentationFormal VerificationHMACSAW ScriptingSHA-1SHA-2XTS Mode
Repositories Contributed To
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