NilFoundation/placeholder
Nov 2024 – Jun 2025
8 Months active
Languages Used
C++CMakeNixPythonYAMLCShellMarkdown
Technical Skills
Big Integer ArithmeticBlueprintBoost.MultiprecisionBuild SystemsC++C++ Development
Andrey Nefedov
PROFILE
Andrey Nefedov
Over eight months, Ioxid contributed to NilFoundation/placeholder by engineering advanced cryptographic primitives and high-performance arithmetic libraries in C++ and Python. Their work modernized multiprecision modules, expanded support for small and extension fields, and introduced robust test and benchmarking infrastructure. Ioxid refactored core components for maintainability, optimized algorithms for SIMD and AVX2, and improved cross-platform portability with configurable build systems. By enhancing field interoperability, profiling, and batch processing, they enabled reliable zero-knowledge proof workflows and accelerated cryptographic operations. The depth of their contributions is reflected in the breadth of features delivered, rigorous testing, and the maintainable architecture established for future development.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
215Total
Bugs
25
Commits
215
Features
67
Lines of code
316,207
Activity Months8
Your Network
32 people
Work History
June 2025
6 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for NilFoundation/placeholder: Focused on expanding field support, improving performance, and strengthening testing and instrumentation. Delivered small-field polymorphic polynomial improvements, robust test infrastructure for multi-field builds, and profiling/benchmarking enhancements for FRI/LPC operations to boost reliability and cryptographic throughput.
6 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for NilFoundation/placeholder: Focused on expanding field support, improving performance, and strengthening testing and instrumentation. Delivered small-field polymorphic polynomial improvements, robust test infrastructure for multi-field builds, and profiling/benchmarking enhancements for FRI/LPC operations to boost reliability and cryptographic throughput.
June 2025
May 2025
39 Commits • 13 Features
May 1, 2025May 2025 monthly summary for NilFoundation/placeholder highlighting business value and technical accomplishments across features delivered, bugs fixed, and overall impact. 1) Key features delivered - Polynomial and field interoperability: cross-field polynomial operations, evaluation on extension fields, small-subfield support, batch typing, and small-field gate/lookup usage. Included commits enabling FP construction from element arrays and small-field usage in gates. - Expression and performance enhancements: faster expression copying/moving; AVX2-optimized babybear_fp4 multiplication; vectorization in static_simd_vector and BabyBear; single-thread polymorphic polynomial performance. - Polymorphic polynomial and small-field support: polymorphic_polynomial_dfs for small fields, polymorphic polynomial, and Goldilocks FP2 support. - Core evaluator and batch utilities refactor: centralized expression evaluator registration and improved batch append utilities; separation of append_to_batch and append_many_to_batch. 2) Major bugs fixed - DAG evaluator: corrected wrong result degree in dag_expression_evaluator. - Fiat-Shamir: ensured extension field is fully filled in Fiat-Shamir flow. - PROFILE_SCOPE: fixed syntax issue when semicolon was missing; grammar/documentation cleanups. - Misc fixes: performance/logging and compile-time adjustments (expression_variable_type_converter quadratic time, non-constexpr expressions, x_index handling, boosting dependencies for benchmarking, FFT parallel performance). 3) Overall impact and accomplishments - Expanded cryptographic capabilities across small and extension fields, enabling broader use-cases and deployment flexibility. Improved performance, reliability, and maintainability through targeted refactors, vectorization, and SIMD optimizations. Increased test coverage (FPN tests, small-field tests) and observability via DAG optimization logs. These efforts position the project for faster iteration on zero-knowledge components and hardware-accelerated paths. 4) Technologies/skills demonstrated - C++ template-heavy cryptography code, small-field arithmetic, extension-field operations, and polymorphic polynomial structures. - SIMD/Vectorization: AVX2 optimizations, static_simd_vector, and BabyBear vectorization. - Performance engineering: profiling, compile-time fixes, and FFT optimizations. - Software architecture: refactoring, DAG/logging instrumentation, and modular evaluator/batch utilities. - Testing and quality: expanded test suites (FPN tests, small-field tests) and documentation grammar fixes.
May 2025
39 Commits • 13 Features
May 1, 2025May 2025 monthly summary for NilFoundation/placeholder highlighting business value and technical accomplishments across features delivered, bugs fixed, and overall impact. 1) Key features delivered - Polynomial and field interoperability: cross-field polynomial operations, evaluation on extension fields, small-subfield support, batch typing, and small-field gate/lookup usage. Included commits enabling FP construction from element arrays and small-field usage in gates. - Expression and performance enhancements: faster expression copying/moving; AVX2-optimized babybear_fp4 multiplication; vectorization in static_simd_vector and BabyBear; single-thread polymorphic polynomial performance. - Polymorphic polynomial and small-field support: polymorphic_polynomial_dfs for small fields, polymorphic polynomial, and Goldilocks FP2 support. - Core evaluator and batch utilities refactor: centralized expression evaluator registration and improved batch append utilities; separation of append_to_batch and append_many_to_batch. 2) Major bugs fixed - DAG evaluator: corrected wrong result degree in dag_expression_evaluator. - Fiat-Shamir: ensured extension field is fully filled in Fiat-Shamir flow. - PROFILE_SCOPE: fixed syntax issue when semicolon was missing; grammar/documentation cleanups. - Misc fixes: performance/logging and compile-time adjustments (expression_variable_type_converter quadratic time, non-constexpr expressions, x_index handling, boosting dependencies for benchmarking, FFT parallel performance). 3) Overall impact and accomplishments - Expanded cryptographic capabilities across small and extension fields, enabling broader use-cases and deployment flexibility. Improved performance, reliability, and maintainability through targeted refactors, vectorization, and SIMD optimizations. Increased test coverage (FPN tests, small-field tests) and observability via DAG optimization logs. These efforts position the project for faster iteration on zero-knowledge components and hardware-accelerated paths. 4) Technologies/skills demonstrated - C++ template-heavy cryptography code, small-field arithmetic, extension-field operations, and polymorphic polynomial structures. - SIMD/Vectorization: AVX2 optimizations, static_simd_vector, and BabyBear vectorization. - Performance engineering: profiling, compile-time fixes, and FFT optimizations. - Software architecture: refactoring, DAG/logging instrumentation, and modular evaluator/batch utilities. - Testing and quality: expanded test suites (FPN tests, small-field tests) and documentation grammar fixes.
April 2025
12 Commits • 4 Features
Apr 1, 2025April 2025 — Focused on delivering robust data access, extended cryptographic field support, and stronger test/reliability, while improving developer experience. Business value was realized via safer data encapsulation, expanded cryptographic capabilities, and a more reliable build/test pipeline that accelerates feature delivery with lower risk.
12 Commits • 4 Features
Apr 1, 2025April 2025 — Focused on delivering robust data access, extended cryptographic field support, and stronger test/reliability, while improving developer experience. Business value was realized via safer data encapsulation, expanded cryptographic capabilities, and a more reliable build/test pipeline that accelerates feature delivery with lower risk.
April 2025
March 2025
37 Commits • 16 Features
Mar 1, 2025March 2025 performance and reliability upgrade for NilFoundation/placeholder. Delivered core multiprecision improvements (monty inverse refactor; big_mod handling; three-way big_uint comparison), element_fp three-way comparator, and polynomial/DAG/DFS enhancements (DFS comparator using <=>; DAG node allocation optimization; gate argument packing). Implemented profiling enablement and performance metrics (scoped profiler; PROFILING_ENABLED flag; FFT profiling). Strengthened build and CI (x86_64-v3 cmake config; CI/test naming fixes) and expanded benchmarking (zkevm_wide benchmarks; babybear wide test; added broader benchmarking framework and new circuits). Result: higher throughput, improved reliability, and better visibility into performance characteristics.
March 2025
37 Commits • 16 Features
Mar 1, 2025March 2025 performance and reliability upgrade for NilFoundation/placeholder. Delivered core multiprecision improvements (monty inverse refactor; big_mod handling; three-way big_uint comparison), element_fp three-way comparator, and polynomial/DAG/DFS enhancements (DFS comparator using <=>; DAG node allocation optimization; gate argument packing). Implemented profiling enablement and performance metrics (scoped profiler; PROFILING_ENABLED flag; FFT profiling). Strengthened build and CI (x86_64-v3 cmake config; CI/test naming fixes) and expanded benchmarking (zkevm_wide benchmarks; babybear wide test; added broader benchmarking framework and new circuits). Result: higher throughput, improved reliability, and better visibility into performance characteristics.
February 2025
13 Commits • 1 Features
Feb 1, 2025February 2025 monthly performance summary for NilFoundation/placeholder: Delivered foundational expansion of small-field modular arithmetic with new fields and robust test/benchmark coverage; stabilized test suite around Mersenne31; improvements in performance and code organization; positioned for production-grade cryptographic workloads in constrained environments.
13 Commits • 1 Features
Feb 1, 2025February 2025 monthly performance summary for NilFoundation/placeholder: Delivered foundational expansion of small-field modular arithmetic with new fields and robust test/benchmark coverage; stabilized test suite around Mersenne31; improvements in performance and code organization; positioned for production-grade cryptographic workloads in constrained environments.
February 2025
January 2025
7 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for NilFoundation/placeholder focusing on portability, robustness, and API clarity in numeric primitives. Implemented configurable support for int128 with a safe Montgomery fallback when intrinsics are unavailable, and strengthened Big_uint correctness and API clarity. These changes improve cross-platform portability, reduce risk in numeric-heavy code paths, and provide clearer overflow handling.
January 2025
7 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for NilFoundation/placeholder focusing on portability, robustness, and API clarity in numeric primitives. Implemented configurable support for int128 with a safe Montgomery fallback when intrinsics are unavailable, and strengthened Big_uint correctness and API clarity. These changes improve cross-platform portability, reduce risk in numeric-heavy code paths, and provide clearer overflow handling.
December 2024
93 Commits • 27 Features
Dec 1, 2024December 2024 — NilFoundation/placeholder: focused on stabilizing and accelerating the multiprecision module to maximize business value through maintainability, reliability, and performance improvements. Key work included structural reorganization of the codebase (header relocation and file placement) to simplify future enhancements; API consistency improvements via renames (_bigui -> _big_uint, exp -> pow) and refactored comparison operators; robustness enhancements for exponent handling (negative exponents in big_mod::pow and INT_MIN edge cases); broad performance improvements in big_uint and big_mod with optimized arithmetic and bit operations; added std::hash specialization for big_uint to enable hashed containers; integration work to adopt zkevm_word_type and wrap operations in blueprint; API stabilization for import/export and error handling; major test/benchmark modernization (generated data usage, updated benchmarks, and test suite cleanup); compiler/tooling improvements including GCC intrinsic fixes and Goldilocks integration for broader support; and formatting and copyright tidying. Overall impact: faster, more reliable arithmetic, easier maintenance, and better ecosystem alignment enabling future optimization and safer deployment in ZK tooling and hashed data structures.
93 Commits • 27 Features
Dec 1, 2024December 2024 — NilFoundation/placeholder: focused on stabilizing and accelerating the multiprecision module to maximize business value through maintainability, reliability, and performance improvements. Key work included structural reorganization of the codebase (header relocation and file placement) to simplify future enhancements; API consistency improvements via renames (_bigui -> _big_uint, exp -> pow) and refactored comparison operators; robustness enhancements for exponent handling (negative exponents in big_mod::pow and INT_MIN edge cases); broad performance improvements in big_uint and big_mod with optimized arithmetic and bit operations; added std::hash specialization for big_uint to enable hashed containers; integration work to adopt zkevm_word_type and wrap operations in blueprint; API stabilization for import/export and error handling; major test/benchmark modernization (generated data usage, updated benchmarks, and test suite cleanup); compiler/tooling improvements including GCC intrinsic fixes and Goldilocks integration for broader support; and formatting and copyright tidying. Overall impact: faster, more reliable arithmetic, easier maintenance, and better ecosystem alignment enabling future optimization and safer deployment in ZK tooling and hashed data structures.
December 2024
November 2024
8 Commits • 1 Features
Nov 1, 2024November 2024: Delivered foundational modernization, improved correctness, and stabilized the test suite for NilFoundation/placeholder. Key deliverables include codebase modernization to C++20 with standardized includes and internal multiprecision, safety enhancements in big_int, and test-time build stability improvements. These changes reduce risk in cryptographic operations, improve cross-platform reliability, and lay groundwork for future feature work.
November 2024
8 Commits • 1 Features
Nov 1, 2024November 2024: Delivered foundational modernization, improved correctness, and stabilized the test suite for NilFoundation/placeholder. Key deliverables include codebase modernization to C++20 with standardized includes and internal multiprecision, safety enhancements in big_int, and test-time build stability improvements. These changes reduce risk in cryptographic operations, improve cross-platform reliability, and lay groundwork for future feature work.
Activity
Loading activity data...
Quality Metrics
Correctness91.4%
Maintainability89.6%
Architecture87.0%
Performance86.6%
AI Usage21.2%
Skills & Technologies
Programming Languages
CC++CMakeMarkdownNixPythonShellYAML
Technical Skills
zk-SNARKsAPI UpdateAVX2AVX2 IntrinsicsAlgebraic StructuresAlgorithm DesignAlgorithm OptimizationAlgorithm RefactoringAlgorithm implementationAlgorithm optimizationAlgorithmsArbitrary-precision arithmeticArithmetic operationsArithmetic optimizationBatch Processing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline