openssl/openssl
Feb 2025 – Aug 2025
2 Months active
Languages Used
CPerl
Technical Skills
CryptographyProvider DevelopmentAPI DesignDocumentationTestingX.509 Certificate Handling
Clemens Lang
PROFILE
Clemens Lang
Worked on the openssl/openssl repository to enhance cryptographic provider compatibility and X.509 certificate handling. Developed alias support for ML-DSA algorithm identifiers, enabling both dashed and non-dashed forms to be recognized by the OpenSSL provider, which improved interoperability across client libraries and tooling. Later, implemented contentCommitment as an accepted alias for nonRepudiation in X.509 certificate parsing, aligning with ITU-T standards and reducing validation issues in PKI deployments. The work involved updates to parsing logic, comprehensive documentation, and new tests. Utilized C and Perl, focusing on API design, cryptography, provider development, and robust testing practices throughout both features.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
2
Lines of code
50
Activity Months2
Your Network
3410 peopleShared Repositories
365
Work History
August 2025
1 Commits • 1 Features
Aug 1, 2025For 2025-08, delivered a focused OpenSSL X509 certificate handling enhancement to improve interoperability with ITU-T standards by adding contentCommitment as an alias for nonRepudiation. Implemented parsing updates, added tests, and refreshed documentation to reflect the change. This work reduces certificate validation issues across PKI deployments and strengthens compliance with modern cryptographic standards.
1 Commits • 1 Features
Aug 1, 2025For 2025-08, delivered a focused OpenSSL X509 certificate handling enhancement to improve interoperability with ITU-T standards by adding contentCommitment as an alias for nonRepudiation. Implemented parsing updates, added tests, and refreshed documentation to reflect the change. This work reduces certificate validation issues across PKI deployments and strengthens compliance with modern cryptographic standards.
August 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary focused on improving OpenSSL provider compatibility for ML-DSA by introducing alias support for dashed vs. non-dashed identifiers. Implemented non-dashed aliases for ML-DSA-44, ML-DSA-65, and ML-DSA-87 within the OpenSSL provider, enabling seamless recognition across client libraries. This work reduces integration friction and aligns naming with diverse tooling.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary focused on improving OpenSSL provider compatibility for ML-DSA by introducing alias support for dashed vs. non-dashed identifiers. Implemented non-dashed aliases for ML-DSA-44, ML-DSA-65, and ML-DSA-87 within the OpenSSL provider, enabling seamless recognition across client libraries. This work reduces integration friction and aligns naming with diverse tooling.
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CPerl
Technical Skills
API DesignCryptographyDocumentationProvider DevelopmentTestingX.509 Certificate Handling
Repositories Contributed To
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