Crypto-TII/claasp
Dec 2024 – Jun 2025
7 Months active
Languages Used
C++PythonDockerfileMakefile
Technical Skills
Algorithm DesignC++CryptographyDifferential CryptanalysisPythonUnit Testing
Juan del Carmen Grados Vasquez
PROFILE
Juan Del Carmen Grados Vasquez
Worked on the Crypto-TII/claasp repository, delivering advanced cryptanalytic modeling and robust testing infrastructure over seven months. Developed SAT-based models for ARX and ChaCha ciphers, enabling high-order differential and truncated differential analysis with Python and C++. Enhanced performance by optimizing test suites and integrating parallel computing, while improving reproducibility through seed-based randomization and isolated test execution using CI/CD pipelines. Refactored core model components for maintainability, centralized shared logic, and expanded reporting for differential-linear trails. Addressed code quality with targeted bug fixes, code cleanup, and documentation, resulting in a more reliable, scalable, and maintainable cryptanalysis toolkit for secure cipher evaluation.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
39Total
Bugs
4
Commits
39
Features
11
Lines of code
5,493
Activity Months7
Your Network
35 peopleShared Repositories
15
Work History
June 2025
2 Commits • 1 Features
Jun 1, 2025Month: 2025-06 Overview: Focused on strengthening the testing infrastructure for Crypto-TII/claasp to improve reliability and maintainability without altering user-facing functionality. Delivered a Pytest Isolate Plugin integration to enhance test isolation, updated the Makefile to support isolated test runs via --isolate for both remote-pytest and local pytest commands, and performed targeted test maintenance by removing unnecessary commented lines in a Python test file. These changes reduce flaky tests, accelerate feedback in CI, and simplify future test maintenance.
2 Commits • 1 Features
Jun 1, 2025Month: 2025-06 Overview: Focused on strengthening the testing infrastructure for Crypto-TII/claasp to improve reliability and maintainability without altering user-facing functionality. Delivered a Pytest Isolate Plugin integration to enhance test isolation, updated the Makefile to support isolated test runs via --isolate for both remote-pytest and local pytest commands, and performed targeted test maintenance by removing unnecessary commented lines in a Python test file. These changes reduce flaky tests, accelerate feedback in CI, and simplify future test maintenance.
June 2025
May 2025
4 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Crypto-TII/claasp: Strengthened testing infrastructure and reliability to accelerate feature delivery and reduce CI cycle times. Implemented consistency improvements (solver naming to KISSAT_EXT), test optimizations for ChaCha cipher routines, and reliability enhancements via isolated test runs.
May 2025
4 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Crypto-TII/claasp: Strengthened testing infrastructure and reliability to accelerate feature delivery and reduce CI cycle times. Implemented consistency improvements (solver naming to KISSAT_EXT), test optimizations for ChaCha cipher routines, and reliability enhancements via isolated test runs.
April 2025
8 Commits • 2 Features
Apr 1, 2025April 2025 focused on expanding cryptanalytic modeling capabilities in Crypto-TII/claasp while strengthening code robustness and maintainability. The team delivered advanced SAT-based models for high-order differential and PNB search on ChaCha-style ciphers, enhanced the model framework to support flexible middle-part configurations, and performed thorough codegen and component reliability improvements to prepare for broader future work and targets.
8 Commits • 2 Features
Apr 1, 2025April 2025 focused on expanding cryptanalytic modeling capabilities in Crypto-TII/claasp while strengthening code robustness and maintainability. The team delivered advanced SAT-based models for high-order differential and PNB search on ChaCha-style ciphers, enhanced the model framework to support flexible middle-part configurations, and performed thorough codegen and component reliability improvements to prepare for broader future work and targets.
April 2025
March 2025
11 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for Crypto-TII/claasp focused on delivering reproducible, reliable cryptanalytic tooling and expanded reporting capabilities, with performance improvements and code quality gains across the repository. The month emphasized business value by enabling repeatable analyses, faster feedback loops, and clearer results for stakeholders.
March 2025
11 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for Crypto-TII/claasp focused on delivering reproducible, reliable cryptanalytic tooling and expanded reporting capabilities, with performance improvements and code quality gains across the repository. The month emphasized business value by enabling repeatable analyses, faster feedback loops, and clearer results for stakeholders.
February 2025
4 Commits • 2 Features
Feb 1, 2025Concise monthly summary for 2025-02 highlighting delivered features, major improvements, and impact for Crypto-TII/claasp. Focused on expanding cryptanalysis modeling capabilities, improving code quality, and enabling faster iteration on security analysis workflows.
4 Commits • 2 Features
Feb 1, 2025Concise monthly summary for 2025-02 highlighting delivered features, major improvements, and impact for Crypto-TII/claasp. Focused on expanding cryptanalysis modeling capabilities, improving code quality, and enabling faster iteration on security analysis workflows.
February 2025
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for Crypto-TII/claasp. Focused on delivering performance-oriented features and establishing a scalable modeling framework for ARX ciphers. Key outcomes include substantial test-suite optimization and the introduction of a SAT-based truncated differential model for ARX ciphers, validated with ChaCha and Speck tests. No major user-facing bug fixes were reported in this period; stability improvements came from test/model enhancements. The work advances business value by speeding cryptanalysis workflows, reducing compute costs, and expanding modeling capabilities for secure cipher analysis.
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for Crypto-TII/claasp. Focused on delivering performance-oriented features and establishing a scalable modeling framework for ARX ciphers. Key outcomes include substantial test-suite optimization and the introduction of a SAT-based truncated differential model for ARX ciphers, validated with ChaCha and Speck tests. No major user-facing bug fixes were reported in this period; stability improvements came from test/model enhancements. The work advances business value by speeding cryptanalysis workflows, reducing compute costs, and expanding modeling capabilities for secure cipher analysis.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for Crypto-TII/claasp focused on advancing cryptanalytic capabilities through new truncation-aware distinguisher checkers and enhanced validation. Delivered Truncated Differential Distinguisher Checkers across permutations and block ciphers, along with an expanded testing framework to validate these checkers. This work strengthens cryptanalysis capabilities, improves testing reliability, and accelerates evaluation cycles for cipher weaknesses.
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for Crypto-TII/claasp focused on advancing cryptanalytic capabilities through new truncation-aware distinguisher checkers and enhanced validation. Delivered Truncated Differential Distinguisher Checkers across permutations and block ciphers, along with an expanded testing framework to validate these checkers. This work strengthens cryptanalysis capabilities, improves testing reliability, and accelerates evaluation cycles for cipher weaknesses.
December 2024
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Quality Metrics
Correctness87.0%
Maintainability85.6%
Architecture83.8%
Performance78.0%
AI Usage21.6%
Skills & Technologies
Programming Languages
C++DockerfileMakefilePython
Technical Skills
ARX CiphersAlgorithm DesignBackend DevelopmentBug FixingC++CI/CDCode CleanupCode GenerationCode QualityConstraint ProgrammingCryptographic AnalysisCryptographyDevOpsDifferential CryptanalysisDocumentation
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