EasyCrypt/easycrypt
Nov 2024 – Mar 2026
8 Months active
Languages Used
DockerfileShellCoqEasyCryptMakefileYAMLCSSJavaScript
Technical Skills
Build AutomationDockerOCamlCI/CDFormal VerificationFunctional Programming
François Dupressoir
PROFILE
François Dupressoir
Worked extensively on the EasyCrypt/easycrypt repository, delivering features and fixes across build automation, formal verification, and CI/CD infrastructure. Enhanced reproducibility and onboarding by automating OCaml environment provisioning within Docker, and improved release reliability through consolidated containerization and tag-based Docker builds. Refactored mathematical proof modules in OCaml to reduce duplication and formalized correctness by replacing axioms with proven lemmas. Integrated cryptographic proof validation into CI pipelines, leveraging YAML configuration and scripting for robust automation. Addressed CI flakiness by improving error handling and aligning build environments, resulting in more predictable, maintainable workflows and streamlined deployment for both development and production contexts.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
14Total
Bugs
2
Commits
14
Features
8
Lines of code
173,644
Activity Months8
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: Docker CI/CD Pipeline Enhancement delivered for EasyCrypt/easycrypt. Refactored the Docker build process to streamline image creation and publishing for multiple variants, improving CI/CD throughput and release automation. No major bugs fixed; focus was on pipeline stability and maintainability.
1 Commits • 1 Features
Mar 1, 2026March 2026: Docker CI/CD Pipeline Enhancement delivered for EasyCrypt/easycrypt. Refactored the Docker build process to streamline image creation and publishing for multiple variants, improving CI/CD throughput and release automation. No major bugs fixed; focus was on pipeline stability and maintainability.
March 2026
February 2026
4 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for EasyCrypt/easycrypt: Delivered CI and build system enhancements with Formosa-XMSS integration and tag-based Docker builds, plus CI reliability improvements addressing runtest robustness and main build box alignment. These changes strengthened security validation, ensured deterministic versioned artifacts, and reduced CI flakiness.
February 2026
4 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for EasyCrypt/easycrypt: Delivered CI and build system enhancements with Formosa-XMSS integration and tag-based Docker builds, plus CI reliability improvements addressing runtest robustness and main build box alignment. These changes strengthened security validation, ensured deterministic versioned artifacts, and reduced CI flakiness.
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 — Delivered containerization and CI/CD enhancements for EasyCrypt/easycrypt, focusing on Formosa. Consolidated containerization with updated Dockerfiles and opam pinning, added a Formosa-specific Dockerfile, and introduced a CI workflow to build and push containers for consistent release environments. Fixed dockerfile-related issues to stabilize image builds and improve release reliability.
3 Commits • 1 Features
Nov 1, 2025November 2025 — Delivered containerization and CI/CD enhancements for EasyCrypt/easycrypt, focusing on Formosa. Consolidated containerization with updated Dockerfiles and opam pinning, added a Formosa-specific Dockerfile, and introduced a CI workflow to build and push containers for consistent release environments. Fixed dockerfile-related issues to stabilize image builds and improve release reliability.
November 2025
September 2025
1 Commits
Sep 1, 2025Month 2025-09, EasyCrypt/easycrypt: Implemented formal correctness improvement in distribution measures by replacing an axiom with a proven lemma for witness_support, ensuring non-zero measure implies existence of an element satisfying the predicate. This strengthens reliability of formal proofs and reduces axiom-based uncertainty.
September 2025
1 Commits
Sep 1, 2025Month 2025-09, EasyCrypt/easycrypt: Implemented formal correctness improvement in distribution measures by replacing an axiom with a proven lemma for witness_support, ensuring non-zero measure implies existence of an element satisfying the predicate. This strengthens reliability of formal proofs and reduces axiom-based uncertainty.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 (EasyCrypt/easycrypt) delivered a key feature to derive ceil from floor, improving consistency and maintainability of math functions. The refactor eliminates duplication of results and lemmas between ceil and floor, ensuring aligned behavior and simplifying future changes. Commit 6ead268653bd7d20ff285b16dbae2d7051b2eafe ('extend results on ceil 'for free'') captures this work. No major bugs fixed are recorded for this period in the provided data. Overall, the work reduces risk in mathematical proofs and cryptographic verification by tightening function semantics, while improving maintainability and future-proofing the math library. Technologies/skills demonstrated include refactoring for maintainability, algebraic reasoning alignment between related functions, and evidence-based improvement of code quality.
1 Commits • 1 Features
May 1, 2025May 2025 (EasyCrypt/easycrypt) delivered a key feature to derive ceil from floor, improving consistency and maintainability of math functions. The refactor eliminates duplication of results and lemmas between ceil and floor, ensuring aligned behavior and simplifying future changes. Commit 6ead268653bd7d20ff285b16dbae2d7051b2eafe ('extend results on ceil 'for free'') captures this work. No major bugs fixed are recorded for this period in the provided data. Overall, the work reduces risk in mathematical proofs and cryptographic verification by tightening function semantics, while improving maintainability and future-proofing the math library. Technologies/skills demonstrated include refactoring for maintainability, algebraic reasoning alignment between related functions, and evidence-based improvement of code quality.
May 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 — Delivered a pivotal feature in EasyCrypt/easycrypt by removing the Alt-Ergo prover dependency, enabling standalone operation without external provers. This change simplifies deployment for customers using commercial licenses or non-free contexts, reduces external tooling fragility, and lowers total cost of ownership. Configurations and example proofs were updated to reflect the new standalone flow, ensuring a smooth transition for users. The work strengthens marketability by improving usability and flexibility, while preserving core proof capabilities.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 — Delivered a pivotal feature in EasyCrypt/easycrypt by removing the Alt-Ergo prover dependency, enabling standalone operation without external provers. This change simplifies deployment for customers using commercial licenses or non-free contexts, reduces external tooling fragility, and lowers total cost of ownership. Configurations and example proofs were updated to reflect the new standalone flow, ensuring a smooth transition for users. The work strengthens marketability by improving usability and flexibility, while preserving core proof capabilities.
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025: Key feature deliveries focused on correctness of map data structures and CI reliability. Highlights include formal range lemmas for FMap (rng_set and rng_set_notin) and a CI workflow enhancement directing XSalsa CI to a development branch for faster, safer testing. No major bug fixes were recorded this month; efforts concentrated on strengthening correctness guarantees, improving integration risk, and enabling faster feedback to stakeholders. Business value: improved correctness of map operations, reduced regression risk, and more predictable CI validation for cryptography-related components.
2 Commits • 2 Features
Jan 1, 2025January 2025: Key feature deliveries focused on correctness of map data structures and CI reliability. Highlights include formal range lemmas for FMap (rng_set and rng_set_notin) and a CI workflow enhancement directing XSalsa CI to a development branch for faster, safer testing. No major bug fixes were recorded this month; efforts concentrated on strengthening correctness guarantees, improving integration risk, and enabling faster feedback to stakeholders. Business value: improved correctness of map operations, reduced regression risk, and more predictable CI validation for cryptography-related components.
January 2025
November 2024
1 Commits • 1 Features
Nov 1, 20242024-11 Monthly Summary for EasyCrypt/easycrypt: Delivered an upgrade of the Docker image to Alt-Ergo 2.6.0 and added comprehensive setup tooling to automate environment provisioning. The tooling creates an OCaml switch, pins Alt-Ergo, installs dependencies and the package, cleans up the switch, and exposes a symlink for fast access to the new version. This work enhances reproducibility, reduces setup time for local development and CI, and ensures compatibility with Alt-Ergo 2.6 features in the verification workflow.
November 2024
1 Commits • 1 Features
Nov 1, 20242024-11 Monthly Summary for EasyCrypt/easycrypt: Delivered an upgrade of the Docker image to Alt-Ergo 2.6.0 and added comprehensive setup tooling to automate environment provisioning. The tooling creates an OCaml switch, pins Alt-Ergo, installs dependencies and the package, cleans up the switch, and exposes a symlink for fast access to the new version. This work enhances reproducibility, reduces setup time for local development and CI, and ensures compatibility with Alt-Ergo 2.6 features in the verification workflow.
Activity
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Quality Metrics
Correctness92.2%
Maintainability88.6%
Architecture89.4%
Performance87.2%
AI Usage22.8%
Skills & Technologies
Programming Languages
CSSCoqDockerfileEasyCryptJavaScriptMakefileOCamlPythonShellYAML
Technical Skills
Build AutomationCI/CDContainerizationDevOpsDockerFormal MethodsFormal VerificationFunctional ProgrammingJavaScriptMathematical ProofOCamlSoftware EngineeringTheorem ProvingYAML configurationcryptography
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