intel/intel-ipsec-mb
Dec 2024 – Sep 2025
9 Months active
Languages Used
AssemblyCCMakeJSON
Technical Skills
AVX-512AVX2 IntrinsicsAssembly OptimizationCryptographyLow-level OptimizationAVX512 Intrinsics
Michael Phelan
PROFILE
Michael Phelan
Michael Phelan contributed to the intel-ipsec-mb repository by engineering cryptographic performance optimizations and reliability improvements across SIMD backends. He enhanced SHA and HMAC implementations by refactoring assembly and C code to leverage AVX2, AVX-512, and SSE intrinsics, enabling variable-length authentication tags and batch processing for SHA algorithms. His work included standardizing code alignment, optimizing register usage, and reducing instruction footprints, which improved throughput and maintainability. Michael also addressed security-sensitive bugs, such as digest clearing and state leakage, while expanding test coverage and example applications. His deep focus on low-level optimization and code quality strengthened both performance and security.
Overall Statistics
Feature vs Bugs
65%Features
Repository Contributions
64Total
Bugs
7
Commits
64
Features
13
Lines of code
9,457
Activity Months9
Your Network
1967 people
Work History
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered a performance-focused optimization for the SNOW3G SSE T1 path in intel-ipsec-mb. Refactored SNOW3G to replace the btr instruction with a lane-mask based bitwise operation, updated register usage and stack frame sizes, and removed unused constants. This optimization reduces instruction footprint and increases cryptographic throughput in the critical SSE path. No major bugs fixed this month; focus was on performance engineering, code cleanliness, and preparing the codebase for future improvements.
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered a performance-focused optimization for the SNOW3G SSE T1 path in intel-ipsec-mb. Refactored SNOW3G to replace the btr instruction with a lane-mask based bitwise operation, updated register usage and stack frame sizes, and removed unused constants. This optimization reduces instruction footprint and increases cryptographic throughput in the critical SSE path. No major bugs fixed this month; focus was on performance engineering, code cleanliness, and preparing the codebase for future improvements.
September 2025
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 performance summary for intel/intel-ipsec-mb focused on cryptographic throughput optimization in the SNOW3G path. Delivered SSE/SIMD-based enhancements that significantly increase parallelism and reduce per-block processing time, strengthening IPsec performance under load for enterprise VPN workloads.
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 performance summary for intel/intel-ipsec-mb focused on cryptographic throughput optimization in the SNOW3G path. Delivered SSE/SIMD-based enhancements that significantly increase parallelism and reduce per-block processing time, strengthening IPsec performance under load for enterprise VPN workloads.
July 2025
23 Commits • 2 Features
Jul 1, 2025July 2025 (2025-07) performance and security focus for the intel-ipsec-mb project. Delivered targeted correctness fixes across SIMD crypto paths (SSE/AVX2/AVX-512), hardening of security-sensitive code paths, and selective performance/code-size optimizations. The work improves reliability, security posture, and runtime efficiency for hardware-accelerated crypto.
23 Commits • 2 Features
Jul 1, 2025July 2025 (2025-07) performance and security focus for the intel-ipsec-mb project. Delivered targeted correctness fixes across SIMD crypto paths (SSE/AVX2/AVX-512), hardening of security-sensitive code paths, and selective performance/code-size optimizations. The work improves reliability, security posture, and runtime efficiency for hardware-accelerated crypto.
July 2025
May 2025
4 Commits • 2 Features
May 1, 2025May 2025 focused on architectural alignment standardization for intel-ipsec-mb, delivering groundwork for maintainability and future performance optimizations. Key changes standardized code alignment using new macros (align_loop, align_label, align_function) across AVX512 components (avx512_t2 and include files) and the AVX2 SHA512 NI path, without altering cryptographic functionality. The work emphasizes consistency, readability, and reduced future defect risk, setting the stage for targeted performance tuning in subsequent sprints.
May 2025
4 Commits • 2 Features
May 1, 2025May 2025 focused on architectural alignment standardization for intel-ipsec-mb, delivering groundwork for maintainability and future performance optimizations. Key changes standardized code alignment using new macros (align_loop, align_label, align_function) across AVX512 components (avx512_t2 and include files) and the AVX2 SHA512 NI path, without altering cryptographic functionality. The work emphasizes consistency, readability, and reduced future defect risk, setting the stage for targeted performance tuning in subsequent sprints.
April 2025
13 Commits • 2 Features
Apr 1, 2025April 2025: Delivered substantial hashing enhancements, SIMD codebase improvements, and comprehensive test coverage for intel-ipsec-mb, driving broader SHA support, reliability, and maintainability. Key work includes batch processing for SHA-512/384 with tests and CLI/app integration for SHA-224/256/384/512; fixed SHA-1 SSE/SHANI output with additional tests; standardized SIMD alignment across SSE/AVX2/AVX512 to improve readability and future performance; expanded test coverage and examples enabling end-to-end SHA authentication workflows. Impact: expanded cryptographic capabilities, improved correctness and stability, and a cleaner, more maintainable SIMD codebase, enabling faster iteration and stronger business value.
13 Commits • 2 Features
Apr 1, 2025April 2025: Delivered substantial hashing enhancements, SIMD codebase improvements, and comprehensive test coverage for intel-ipsec-mb, driving broader SHA support, reliability, and maintainability. Key work includes batch processing for SHA-512/384 with tests and CLI/app integration for SHA-224/256/384/512; fixed SHA-1 SSE/SHANI output with additional tests; standardized SIMD alignment across SSE/AVX2/AVX512 to improve readability and future performance; expanded test coverage and examples enabling end-to-end SHA authentication workflows. Impact: expanded cryptographic capabilities, improved correctness and stability, and a cleaner, more maintainable SIMD codebase, enabling faster iteration and stronger business value.
April 2025
March 2025
14 Commits • 2 Features
Mar 1, 2025March 2025 (2025-03) focused on performance-oriented crypto improvements for intel/intel-ipsec-mb, delivering expanded HMAC-SHA flexibility and single-buffer SHA optimizations. The work enhanced interoperability, security options, and throughput across SIMD backends (SSE, AVX2, AVX512) while expanding validation via tests and sample apps. The changes lay groundwork for broader hardware support and robust, configurable MAC tag handling in production deployments.
March 2025
14 Commits • 2 Features
Mar 1, 2025March 2025 (2025-03) focused on performance-oriented crypto improvements for intel/intel-ipsec-mb, delivering expanded HMAC-SHA flexibility and single-buffer SHA optimizations. The work enhanced interoperability, security options, and throughput across SIMD backends (SSE, AVX2, AVX512) while expanding validation via tests and sample apps. The changes lay groundwork for broader hardware support and robust, configurable MAC tag handling in production deployments.
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for intel-ipsec-mb development. Focused on extending HMAC-SHA1 authentication to support variable tag lengths across SIMD paths, enhancing interoperability and efficiency for diverse client requirements while maintaining rigorous validation and test coverage.
3 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for intel-ipsec-mb development. Focused on extending HMAC-SHA1 authentication to support variable tag lengths across SIMD paths, enhancing interoperability and efficiency for diverse client requirements while maintaining rigorous validation and test coverage.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for intel/intel-ipsec-mb focusing on performance optimizations in HMAC-AVX-512 across SHA1 and SHA256 paths, with refactoring and alignment work that improved throughput and resource efficiency. Work completed in the Intel IPsec Multi-Block (MB) engine, reinforcing competitive crypto throughput on AVX-512 capable platforms.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for intel/intel-ipsec-mb focusing on performance optimizations in HMAC-AVX-512 across SHA1 and SHA256 paths, with refactoring and alignment work that improved throughput and resource efficiency. Work completed in the Intel IPsec Multi-Block (MB) engine, reinforcing competitive crypto throughput on AVX-512 capable platforms.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for intel-ipsec-mb: Delivered SHA performance optimization across AVX2/AVX-512 via constant loading broadcasts, refactoring constants loading for SHA1/SHA256/SHA512, resulting in a cleaner data footprint and paving the way for higher throughputs on modern CPUs. Major bugs fixed: none reported this month. Overall impact includes potential performance gains, simpler maintenance, and groundwork for further vectorized crypto optimizations. Technologies/skills demonstrated include AVX2/AVX-512 vectorization, broadcast instruction usage, performance tuning, and cross-architecture crypto optimization.
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for intel-ipsec-mb: Delivered SHA performance optimization across AVX2/AVX-512 via constant loading broadcasts, refactoring constants loading for SHA1/SHA256/SHA512, resulting in a cleaner data footprint and paving the way for higher throughputs on modern CPUs. Major bugs fixed: none reported this month. Overall impact includes potential performance gains, simpler maintenance, and groundwork for further vectorized crypto optimizations. Technologies/skills demonstrated include AVX2/AVX-512 vectorization, broadcast instruction usage, performance tuning, and cross-architecture crypto optimization.
December 2024
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Quality Metrics
Correctness92.0%
Maintainability86.6%
Architecture83.4%
Performance89.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyCCMakeJSON
Technical Skills
AVX-512AVX-512 IntrinsicsAVX2AVX2 IntrinsicsAVX2 optimizationAVX512AVX512 IntrinsicsAssemblyAssembly LanguageAssembly Language ProgrammingAssembly OptimizationAssembly languageAssembly language optimizationAssembly language programmingAssembly programming
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