cedar-policy/cedar-spec
Jan 2025 – May 2025
3 Months active
Languages Used
Lean
Technical Skills
Domain-Specific LanguageFormal VerificationLanguage UpgradesTheorem ProvingType TheoryData Structures
Emina Torlak
PROFILE
Emina Torlak
Worked on the cedar-policy/cedar-spec repository to deliver four features over three months, focusing on formal verification and policy analysis for domain-specific languages. Upgraded the codebase to Lean 4.15, refactored type definitions, and integrated native Int64 support to improve compatibility and 64-bit data handling. Enhanced policy model flexibility by implementing List.mapUnion and reorganizing policy slicing logic for better maintainability. Developed a symbolic Cedar policy compiler with integrated proofs and tests, establishing a foundation for advanced formal verification workflows. Leveraged Lean, theorem proving, and SMT solvers to ensure correctness, soundness, and future extensibility of policy validation and analysis tools.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
4Total
Bugs
0
Commits
4
Features
4
Lines of code
34,136
Activity Months3
Your Network
47 peopleShared Repositories
6
Work History
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on delivery of a Symbolic Cedar Policy Compiler for formal verification and analysis in cedar-spec, with proofs and tests validating correctness and soundness. The work lays groundwork for advanced policy analysis and validation capabilities, enabling early defect detection and safer policy deployments.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on delivery of a Symbolic Cedar Policy Compiler for formal verification and analysis in cedar-spec, with proofs and tests validating correctness and soundness. The work lays groundwork for advanced policy analysis and validation capabilities, enabling early defect detection and safer policy deployments.
May 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 performance-focused update for cedar-spec. Key feature delivery centered on policy model improvements and code organization, setting the stage for faster policy iteration and more reliable derivations.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 performance-focused update for cedar-spec. Key feature delivery centered on policy model improvements and code organization, setting the stage for faster policy iteration and more reliable derivations.
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for cedar-spec: Delivered Lean 4.15 upgrade with compatibility enhancements and introduced native Int64 handling across models, evaluators, and protocol buffers. These changes modernize the codebase, improve 64-bit data correctness, and reduce future maintenance risk. No major bugs fixed this month; the focus was on upgrade, refactor, and aligning with the Lean ecosystem.
2 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for cedar-spec: Delivered Lean 4.15 upgrade with compatibility enhancements and introduced native Int64 handling across models, evaluators, and protocol buffers. These changes modernize the codebase, improve 64-bit data correctness, and reduce future maintenance risk. No major bugs fixed this month; the focus was on upgrade, refactor, and aligning with the Lean ecosystem.
January 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Lean
Technical Skills
Compiler DesignData StructuresDomain-Specific LanguageFormal VerificationLanguage UpgradesPolicy AnalysisSMT SolversSymbolic ExecutionTheorem ProvingType Theory
Repositories Contributed To
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