github/codeql
Jan 2025 – Oct 2025
9 Months active
Languages Used
pythonqlJavaQLC++QLLCMarkdown
Technical Skills
code analysiscryptographylanguage modelingCode AnalysisCodeQLCryptography
REDMOND\brodes
PROFILE
Redmond\brodes
Brody Desjardins engineered advanced cryptographic analysis and modeling features for the github/codeql repository, focusing on secure API design and static analysis improvements. Over nine months, Brody delivered robust enhancements to Java and C++ cryptography modeling, including data flow tracing, nonce reuse detection, and integration of OpenSSL and Java Cryptography Architecture (JCA) primitives. Using technologies such as CodeQL, C++, and Java, Brody refactored core modules, improved test infrastructure, and expanded vulnerability detection coverage. The work emphasized maintainability and accuracy, reducing false positives and enabling earlier risk identification, while aligning code quality and documentation with evolving security standards and best practices.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
235Total
Bugs
39
Commits
235
Features
59
Lines of code
115,452
Activity Months9
Your Network
4507 peopleSame Organization
@microsoft.com4432
GitOpsMember
Ananta GuptaMember
Abigail HartmanMember
Abram SandersonMember
Adam EttenbergerMember
Ami HollanderMember
AndersMember
Andrej KyselicaMember
Andrew MalkovMember
Work History
October 2025
85 Commits • 25 Features
Oct 1, 2025Month 2025-10: Focused on expanding and stabilizing CodeQL crypto modeling for Java Cryptography Architecture (JCA) integrations, PBKDF2 coverage, and broader crypto operation modeling. Delivered core features, fixed critical issues, and strengthened test coverage to improve analysis reliability. Business value includes more accurate detection of cryptographic patterns, reduced false positives, and clearer guidance for secure implementations.
85 Commits • 25 Features
Oct 1, 2025Month 2025-10: Focused on expanding and stabilizing CodeQL crypto modeling for Java Cryptography Architecture (JCA) integrations, PBKDF2 coverage, and broader crypto operation modeling. Delivered core features, fixed critical issues, and strengthened test coverage to improve analysis reliability. Business value includes more accurate detection of cryptographic patterns, reduced false positives, and clearer guidance for secure implementations.
October 2025
August 2025
10 Commits • 2 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on crypto static analysis improvements in the github/codeql repository. Delivered two major features with substantial improvements to detection coverage, testability, and security posture in critical cryptographic code (Java/JCA and OpenSSL), along with a suite of stability fixes and code quality improvements. The work enhances business value by enabling earlier vulnerability discovery, reducing false negatives, and improving audit readiness through stronger tooling and clearer data-flow reasoning.
August 2025
10 Commits • 2 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on crypto static analysis improvements in the github/codeql repository. Delivered two major features with substantial improvements to detection coverage, testability, and security posture in critical cryptographic code (Java/JCA and OpenSSL), along with a suite of stability fixes and code quality improvements. The work enhances business value by enabling earlier vulnerability discovery, reducing false negatives, and improving audit readiness through stronger tooling and clearer data-flow reasoning.
July 2025
5 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for github/codeql focusing on cryptographic MAC operation modeling overhaul. Delivered a refactor-driven upgrade to MAC vs signature operation handling, introducing MacOperationInstance and aligning JCA MAC processing with the new model. Completed cleanups of references and code structure to improve cryptographic analysis and data flow modeling, and ensured stability by running OpenSSL-based tests.
5 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for github/codeql focusing on cryptographic MAC operation modeling overhaul. Delivered a refactor-driven upgrade to MAC vs signature operation handling, introducing MacOperationInstance and aligning JCA MAC processing with the new model. Completed cleanups of references and code structure to improve cryptographic analysis and data flow modeling, and ensured stability by running OpenSSL-based tests.
July 2025
June 2025
41 Commits • 8 Features
Jun 1, 2025June 2025: Major modernization of the Crypto work in github/codeql, delivering safer crypto operations, improved test infrastructure, and API consistency. Key features include relocating crypto test stubs under experimental/stubs and cleanup of test infrastructure; refactoring CtxFlow and EVP initializers to support more flexible source contexts and paramgen handling; Signature/Algorithm API enhancements with EVP key gen and signature operation scaffolding; alignment of the JCA model with model.qll and addition of key input support for graph key generation; and broad code quality improvements including naming harmonization and CI/PR hygiene. Major bugs fixed in June include reverting CODEOWNERS changes for crypto stubs to restore proper ownership, correcting UnknownKeyAgreementType mapping for JCA, addressing OpenSSL padding and hashing config linkage, fixing a bug in the output model, and tightening QL-for-QL alerts and CI restart-related issues to stabilize PR checks. Overall impact: These efforts significantly reduce risk of crypto-related regressions, enable faster downstream feature work (signature/keygen/API evolution), and improve maintainability through consistent coding standards, clearer test structures, and stronger alignment with model.qll. The team demonstrated advanced proficiency with OpenSSL EVP flows, CodeQL/QL tooling, test infrastructure design, and cross-repo API evolution (JCA, MAC, signatures) while delivering tangible business value by stabilizing crypto workflows and enabling more reliable feature delivery. Technologies/skills demonstrated: OpenSSL EVP API design and refactoring; CtxFlow and initializer pattern engineering; test infrastructure modernization; QL/CodeQL model alignment; graph key generation and JCA compatibility; code quality, naming harmonization (OpenSSL/OpenSsl, EVP/Evp, etc.); CI/CD hygiene and test scaffolding.
June 2025
41 Commits • 8 Features
Jun 1, 2025June 2025: Major modernization of the Crypto work in github/codeql, delivering safer crypto operations, improved test infrastructure, and API consistency. Key features include relocating crypto test stubs under experimental/stubs and cleanup of test infrastructure; refactoring CtxFlow and EVP initializers to support more flexible source contexts and paramgen handling; Signature/Algorithm API enhancements with EVP key gen and signature operation scaffolding; alignment of the JCA model with model.qll and addition of key input support for graph key generation; and broad code quality improvements including naming harmonization and CI/PR hygiene. Major bugs fixed in June include reverting CODEOWNERS changes for crypto stubs to restore proper ownership, correcting UnknownKeyAgreementType mapping for JCA, addressing OpenSSL padding and hashing config linkage, fixing a bug in the output model, and tightening QL-for-QL alerts and CI restart-related issues to stabilize PR checks. Overall impact: These efforts significantly reduce risk of crypto-related regressions, enable faster downstream feature work (signature/keygen/API evolution), and improve maintainability through consistent coding standards, clearer test structures, and stronger alignment with model.qll. The team demonstrated advanced proficiency with OpenSSL EVP flows, CodeQL/QL tooling, test infrastructure design, and cross-repo API evolution (JCA, MAC, signatures) while delivering tangible business value by stabilizing crypto workflows and enabling more reliable feature delivery. Technologies/skills demonstrated: OpenSSL EVP API design and refactoring; CtxFlow and initializer pattern engineering; test infrastructure modernization; QL/CodeQL model alignment; graph key generation and JCA compatibility; code quality, naming harmonization (OpenSSL/OpenSsl, EVP/Evp, etc.); CI/CD hygiene and test scaffolding.
May 2025
40 Commits • 11 Features
May 1, 2025May 2025 Monthly Summary: Focused delivery and stabilization of advanced crypto modeling work within the CodeQL repo. Key workstreams included codebase cleanup/refactor, improvements to JCA/OpenSSL modeling, hashing upgrade preparation, and groundwork for key agreement support. The month yielded concrete enhancements and bug fixes that reduce technical debt, improve modeling fidelity, and lay the groundwork for future security-critical improvements.
40 Commits • 11 Features
May 1, 2025May 2025 Monthly Summary: Focused delivery and stabilization of advanced crypto modeling work within the CodeQL repo. Key workstreams included codebase cleanup/refactor, improvements to JCA/OpenSSL modeling, hashing upgrade preparation, and groundwork for key agreement support. The month yielded concrete enhancements and bug fixes that reduce technical debt, improve modeling fidelity, and lay the groundwork for future security-critical improvements.
May 2025
April 2025
13 Commits • 3 Features
Apr 1, 2025April 2025 – github/codeql: Expanded cryptography analysis scope across CodeQL queries and JCA models, introduced nonce reuse detection, and stabilized Elliptic Curve analysis. Key features delivered: JCA Cryptography Modeling Enhancements (EC support, key agreement, data-flow tracing, asymmetry classification); Nonce reuse detection mechanism; CodeQL queries for cryptography detection (asymmetric/symmetric, ECC, hashing, KDFs) with cleanup. Major bug fixed: Elliptic Curve AVCs fallback to a safe isCipherAVC-based path. Impact: broader EC security coverage, earlier risk identification, reduced false positives, improved traceability from strings to key material, and stronger crypto API usage governance. Technologies: CodeQL, data-flow modeling, elliptic curves, key exchange, crypto API mapping.
April 2025
13 Commits • 3 Features
Apr 1, 2025April 2025 – github/codeql: Expanded cryptography analysis scope across CodeQL queries and JCA models, introduced nonce reuse detection, and stabilized Elliptic Curve analysis. Key features delivered: JCA Cryptography Modeling Enhancements (EC support, key agreement, data-flow tracing, asymmetry classification); Nonce reuse detection mechanism; CodeQL queries for cryptography detection (asymmetric/symmetric, ECC, hashing, KDFs) with cleanup. Major bug fixed: Elliptic Curve AVCs fallback to a safe isCipherAVC-based path. Impact: broader EC security coverage, earlier risk identification, reduced false positives, improved traceability from strings to key material, and stronger crypto API usage governance. Technologies: CodeQL, data-flow modeling, elliptic curves, key exchange, crypto API mapping.
March 2025
34 Commits • 7 Features
Mar 1, 2025March 2025 focused on strengthening cryptography analysis capabilities and stabilizing the OpenSSL/OpenCrypto modeling surface in the CodeQL codebase. Goals included nonce hygiene improvements, expanded hash/cipher modeling, and broader dataflow enhancements to improve query accuracy and maintainability. The results provide a more accurate detection of insecure/unknown nonces, richer OpenSSL crypto model coverage, and a more robust dataflow processing pipeline, contributing to higher quality security insights and more reliable tooling.
34 Commits • 7 Features
Mar 1, 2025March 2025 focused on strengthening cryptography analysis capabilities and stabilizing the OpenSSL/OpenCrypto modeling surface in the CodeQL codebase. Goals included nonce hygiene improvements, expanded hash/cipher modeling, and broader dataflow enhancements to improve query accuracy and maintainability. The results provide a more accurate detection of insecure/unknown nonces, richer OpenSSL crypto model coverage, and a more robust dataflow processing pipeline, contributing to higher quality security insights and more reliable tooling.
March 2025
February 2025
6 Commits • 1 Features
Feb 1, 2025February 2025: Delivered JCA cryptography operation modeling and detection enhancements in github/codeql, including a new CipherOperation concept, expanded detection across the encryption/decryption path (Cipher init through doFinal), support for wrap/unwrap/doFinal, and mode origin tracing placeholders. Refactored cipher mode detection and clarified terminology for cipher block modes (e.g., CBC). Fixed cryptography model type bug to ensure getAlgorithm returns the correct algorithm instance. This work improves detection accuracy, reduces false negatives in security analysis, and strengthens maintainability and future extensibility.
February 2025
6 Commits • 1 Features
Feb 1, 2025February 2025: Delivered JCA cryptography operation modeling and detection enhancements in github/codeql, including a new CipherOperation concept, expanded detection across the encryption/decryption path (Cipher init through doFinal), support for wrap/unwrap/doFinal, and mode origin tracing placeholders. Refactored cipher mode detection and clarified terminology for cipher block modes (e.g., CBC). Fixed cryptography model type bug to ensure getAlgorithm returns the correct algorithm instance. This work improves detection accuracy, reduces false negatives in security analysis, and strengthens maintainability and future extensibility.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered foundational Elliptic Curve cryptography API groundwork in the github/codeql repository. Introduced a curve family type, refined EllipticCurve with getCurveFamilyType and getRawAlgorithmName, and updated Algorithm to require getRawAlgorithmName for elliptic curves to ensure consistent naming. The change establishes a stable, interoperable ECC API surface and lays the groundwork for future cryptographic primitives, improving security posture and analysis fidelity.
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered foundational Elliptic Curve cryptography API groundwork in the github/codeql repository. Introduced a curve family type, refined EllipticCurve with getCurveFamilyType and getRawAlgorithmName, and updated Algorithm to require getRawAlgorithmName for elliptic curves to ensure consistent naming. The change establishes a stable, interoperable ECC API surface and lays the groundwork for future cryptographic primitives, improving security posture and analysis fidelity.
January 2025
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Quality Metrics
Correctness88.0%
Maintainability87.6%
Architecture86.6%
Performance77.4%
AI Usage21.6%
Skills & Technologies
Programming Languages
CC++JavaMarkdownQLQLLpythonql
Technical Skills
AESAPI RefactoringAlgorithm ModelingArgon2Bug FixingC++C++ DevelopmentC/C++C/C++ LibrariesCI/CDChaCha20-Poly1305Code AnalysisCode CleanupCode DocumentationCode Formatting
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