microsoft/CoseSignTool
Oct 2024 – Jul 2025
3 Months active
Languages Used
C#XMLYAMLcscsproj
Technical Skills
.NET .NET Development .NET Framework .NET Testing Build Configuration Certificate Validation
Edwin Lantigua
PROFILE
Edwin Lantigua
Worked on the microsoft/CoseSignTool repository, delivering multi-target build support, enhanced diagnostics, and robust certificate validation. Over three months, implemented features such as dual compilation for CoseSign1.Certificates, improved cross-platform debugging, and expanded test coverage using C#, XML, and YAML. Focused on security by removing weak hashing algorithms and aligning tests to enforce stronger cryptographic standards. Addressed reliability through improved error handling and regression tests for certificate validation, reducing ambiguity in exception reporting. Leveraged .NET development, build automation, and test-driven methodologies to streamline CI/CD pipelines, strengthen security posture, and ensure maintainable, audit-ready code across diverse deployment environments.
Overall Statistics
Feature vs Bugs
70%Features
Repository Contributions
77Total
Bugs
14
Commits
77
Features
33
Lines of code
886
Activity Months3
Your Network
4726 peopleSame Organization
@microsoft.com4720
GitOpsMember
Ananta GuptaMember
Abi GicicMember
Abigail HartmanMember
Abram SandersonMember
Adam EttenbergerMember
Alexandre GattikerMember
Ami HollanderMember
AndersMember
Work History
July 2025
1 Commits
Jul 1, 2025Summary for 2025-07: Hardened certificate validation in microsoft/CoseSignTool with improved error handling and test coverage. This month focused on reliability and security of certificate validation, reducing ambiguity in exceptions, and increasing confidence through regression tests.
1 Commits
Jul 1, 2025Summary for 2025-07: Hardened certificate validation in microsoft/CoseSignTool with improved error handling and test coverage. This month focused on reliability and security of certificate validation, reducing ambiguity in exceptions, and increasing confidence through regression tests.
July 2025
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024: Focused on security hardening for CoseSignTool and maintaining test integrity across the repository microsoft/CoseSignTool. Key feature delivered: removal of support for weak hashing algorithms (MD5 and SHA1) with corresponding code-path updates and test alignment to reflect only stronger, secure algorithms. Major bug fix: updates to the test suite to accommodate the new hashing policy, ensuring regression coverage and reducing risk of undiscovered compatibility issues. Overall impact: enhanced cryptographic security posture for COSE signing and reduced production risk, with clear auditability from commit references. Technologies/skills demonstrated: cryptographic security hardening, test-driven development, code review discipline, and effective change management across the repository.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024: Focused on security hardening for CoseSignTool and maintaining test integrity across the repository microsoft/CoseSignTool. Key feature delivered: removal of support for weak hashing algorithms (MD5 and SHA1) with corresponding code-path updates and test alignment to reflect only stronger, secure algorithms. Major bug fix: updates to the test suite to accommodate the new hashing policy, ensuring regression coverage and reducing risk of undiscovered compatibility issues. Overall impact: enhanced cryptographic security posture for COSE signing and reduced production risk, with clear auditability from commit references. Technologies/skills demonstrated: cryptographic security hardening, test-driven development, code review discipline, and effective change management across the repository.
October 2024
74 Commits • 32 Features
Oct 1, 2024Month: 2024-10 | Microsoft/CoseSignTool: Delivered multi-target build support, diagnostics enhancements, extensive test coverage, and platform reliability improvements. Key outcomes include dual compilation mode for CoseSign1.Certificates enabling multiple targets; trust decisions now respect the user root flag; cross-platform and macOS-specific debugging/logging enhancements; expanded test scaffolding and coverage; Linux copy reliability improvements; and multiple build/test stability fixes that reduce risk in release pipelines and accelerate secure deployment.
74 Commits • 32 Features
Oct 1, 2024Month: 2024-10 | Microsoft/CoseSignTool: Delivered multi-target build support, diagnostics enhancements, extensive test coverage, and platform reliability improvements. Key outcomes include dual compilation mode for CoseSign1.Certificates enabling multiple targets; trust decisions now respect the user root flag; cross-platform and macOS-specific debugging/logging enhancements; expanded test scaffolding and coverage; Linux copy reliability improvements; and multiple build/test stability fixes that reduce risk in release pipelines and accelerate secure deployment.
October 2024
Activity
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Quality Metrics
Correctness82.2%
Maintainability84.0%
Architecture74.2%
Performance73.8%
AI Usage20.6%
Skills & Technologies
Programming Languages
C#XMLYAMLcscsproj
Technical Skills
.NET .NET Development .NET Framework .NET Testing Build Configuration Certificate Validation Cryptography File I/O Project Configuration Refactoring Test Automation Unit TestingBuild AutomationBuild ConfigurationBuild Engineering
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline