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Sean Parkinson

PROFILE

Sean Parkinson

Worked on the wolfSSL/wolfProvider repository, focusing on cryptographic reliability, interoperability, and performance in C. Delivered broad key format support, including X9.62 ECC and DER-encoded algorithms, and improved PEM parsing to enhance key management workflows. Addressed subtle bugs in initialization and key derivation, notably refining n_fold carry handling and index calculations to ensure correctness across edge cases. Enhanced DER encoding for RSA, ECC, and related algorithms, improving standards compliance and observability with function-aware logging. Expanded test coverage for key derivation routines, consolidating changes to support robust, secure cryptographic operations. Emphasized low-level programming, cryptography, and performance optimization throughout.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

6Total
Bugs
4
Commits
6
Features
2
Lines of code
1,735
Activity Months4

Your Network

44 people

Work History

August 2025

1 Commits

Aug 1, 2025

August 2025 monthly summary focused on reliability and security of key derivation in wolfSSL/wolfProvider. Delivered a robust fix for n_fold carry handling during reverse addition and edge-case no-op addition, improving correctness across varying constant lengths; expanded test coverage to prevent arithmetic errors in key derivation; changes consolidated under the wolfProvider codebase.

July 2025

1 Commits

Jul 1, 2025

July 2025 monthly summary focused on cryptographic reliability improvements in wolfSSL/wolfProvider. Delivered a targeted KRB5KDF bug fix to ensure correct n_fold index calculation and proper carry propagation, reducing risk of incorrect key material and edge-case failures. This change enhances stability of key derivation, lowers maintenance burden in crypto code, and supports security audits by improving determinism and correctness of KRB5KDF behavior.

April 2025

1 Commits

Apr 1, 2025

For 2025-04, delivered a critical DER encoding and PEM handling fix in wolfSSL/wolfProvider, improving interoperability, security, and observability. The work focused on encoding for RSA, RSA-PSS, ECC, and ECX; corrected algorithm identifiers and signature encoding; ensured public key availability during encoding; and added function-name-aware logging on exit. Validated against standard PEM workflows and prepared the code for stable integration with client deployments.

February 2025

3 Commits • 2 Features

Feb 1, 2025

In Feb 2025, WolfProvider delivered key bug fixes, interoperability enhancements, and performance optimizations that reduce operational friction and improve throughput. The changes enable broader key format support (X9.62, PEM parsing, and DER algorithms including encrypted RSA keys), fixed a subtle initialization bug in wp_params_get_uint and updated ECCmin size guidance, and introduced a new HMAC performance configuration with AES-GCM tuning.

Activity

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Quality Metrics

Correctness85.0%
Maintainability80.0%
Architecture76.6%
Performance70.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C

Technical Skills

Build SystemsC ProgrammingCryptographyDER EncodingEmbedded SystemsKey DerivationKey ManagementLow-level programmingPKIPerformance OptimizationProvider Development

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

wolfSSL/wolfProvider

Feb 2025 Aug 2025
4 Months active

Languages Used

C

Technical Skills

Build SystemsC ProgrammingCryptographyEmbedded SystemsKey ManagementPerformance Optimization