scroll-tech/ceno
Nov 2024 – Jan 2026
7 Months active
Languages Used
PythonRustAssembly
Technical Skills
BenchmarkingCode RefactoringCriterion.rsCryptographyIteratorPerformance Optimization
Cyte Zhang
PROFILE
Cyte Zhang
Yucheng Zhang contributed to the scroll-tech/ceno repository by engineering cryptographic protocols, RISC-V arithmetic circuits, and developer documentation over seven months. He integrated the WHIR polynomial commitment scheme and migrated it to Plonky3, improving performance and extensibility for zero-knowledge proof workflows. His work included designing limb-based circuits for RISC-V MUL and DIV/REM operations in Rust, introducing dynamic range checks, and refining table-driven validation for input reliability. Yucheng also established a comprehensive documentation structure for the Ceno CLI and zkVM integration, supporting developer onboarding. His contributions demonstrated depth in Rust systems programming, circuit design, and cryptography, enhancing maintainability and scalability.
Overall Statistics
Feature vs Bugs
91%Features
Repository Contributions
17Total
Bugs
1
Commits
17
Features
10
Lines of code
20,999
Activity Months7
Your Network
18 peopleWork History
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) – Scroll-tech/ceno: Key features delivered include a comprehensive documentation structure for the Ceno CLI, guest programming, and zkVM integration, with topic-specific docs to guide developers building zk-enabled applications. Major bugs fixed: none reported this month. Overall impact: strengthens developer onboarding and accelerates adoption of Ceno-based zk applications by providing a robust documentation foundation; establishes groundwork for future tutorials and hands-on guides. Technologies/skills demonstrated: technical writing, documentation architecture, knowledge of Ceno CLI/guest programming/zkVM concepts, cross-functional collaboration, and Git-based contribution practices. Commit reference: 60246d5e91ff0b37257e903f97bf46f17e1e9c22 (Ceno book draft; co-authored-by: sm.wu).
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) – Scroll-tech/ceno: Key features delivered include a comprehensive documentation structure for the Ceno CLI, guest programming, and zkVM integration, with topic-specific docs to guide developers building zk-enabled applications. Major bugs fixed: none reported this month. Overall impact: strengthens developer onboarding and accelerates adoption of Ceno-based zk applications by providing a robust documentation foundation; establishes groundwork for future tutorials and hands-on guides. Technologies/skills demonstrated: technical writing, documentation architecture, knowledge of Ceno CLI/guest programming/zkVM concepts, cross-functional collaboration, and Git-based contribution practices. Commit reference: 60246d5e91ff0b37257e903f97bf46f17e1e9c22 (Ceno book draft; co-authored-by: sm.wu).
January 2026
September 2025
1 Commits • 1 Features
Sep 1, 2025Summary for 2025-09 (scroll-tech/ceno): Delivered the Double range check feature for two 8-bit integers using a single table lookup, including dependency updates and instruction logic changes to support the capability. No major bugs fixed this period; stabilization focused on integration. Overall impact: improved input validation reliability and performance, paving the way for future multi-operand checks. Technologies demonstrated: table-driven validation, 8-bit arithmetic handling, dependency management, and instruction-level logic design; aligns with issue #1044.
September 2025
1 Commits • 1 Features
Sep 1, 2025Summary for 2025-09 (scroll-tech/ceno): Delivered the Double range check feature for two 8-bit integers using a single table lookup, including dependency updates and instruction logic changes to support the capability. No major bugs fixed this period; stabilization focused on integration. Overall impact: improved input validation reliability and performance, paving the way for future multi-operand checks. Technologies demonstrated: table-driven validation, 8-bit arithmetic handling, dependency management, and instruction-level logic design; aligns with issue #1044.
August 2025
3 Commits • 3 Features
Aug 1, 2025Month: 2025-08 — concise monthly summary focusing on key accomplishments, business value, and technical achievements for scroll-tech/ceno. Delivered robust limb-based arithmetic circuits for RISC-V operations and introduced flexible range checking, enhancing performance, correctness, and maintainability across ZKVM workloads. Key developments and impact: - Implemented limbs-based circuit for MUL family (MUL, MULH, MULHS, MULHU) with a v2 mulh circuit, including a new u16limb_circuit path, circuit construction refinements, instance assignment, and range checks. Conditional compilation enables feature-based builds, improving portability and maintainability. Commit: 38d311395529934f66966e72e0596e8c2206179a (MUL/MULH/MULHS/MULHU #1010). - Implemented limbs-based circuit for DIV/REM opcodes, refactoring division and remainder logic to support modular limb-based construction and correctness for both signed and unsigned operations in ZKVM. Improves reliability and potential performance. Commit: 1c487938c22296aec97f1bdd02fd686f7177e66b (DIV/REM #1022). - Introduced dynamic range checks with variable-bit support in ceno_zkvm, replacing fixed-size checks with configurable mechanisms and new table structures to support different data sizes, increasing adaptability and efficiency. Commit: 27b1fafdd42aef60a0cc6fd8186266238e2cdaac (Dynamic range check #1026). Overall impact and business value: - Strengthened arithmetic reliability and scalability for ZKVM workloads, enabling broader data-size support with lower maintenance overhead. - Enhanced modifiability through feature flags and modular circuit paths, reducing integration risk for future extensions. - Positioned the project to achieve better performance characteristics in constrained environments by enabling limb-based, parallelizable circuit constructions. Technologies and skills demonstrated: - Limb-based circuit design for arithmetic operations and division/remainder - Conditional compilation and feature-flag driven development - Dynamic, configurable range checks and data-size adaptability - Rust/Crypto-like circuit modeling and modular architecture - Attention to correctness across signed/unsigned arithmetic in ZKVM
3 Commits • 3 Features
Aug 1, 2025Month: 2025-08 — concise monthly summary focusing on key accomplishments, business value, and technical achievements for scroll-tech/ceno. Delivered robust limb-based arithmetic circuits for RISC-V operations and introduced flexible range checking, enhancing performance, correctness, and maintainability across ZKVM workloads. Key developments and impact: - Implemented limbs-based circuit for MUL family (MUL, MULH, MULHS, MULHU) with a v2 mulh circuit, including a new u16limb_circuit path, circuit construction refinements, instance assignment, and range checks. Conditional compilation enables feature-based builds, improving portability and maintainability. Commit: 38d311395529934f66966e72e0596e8c2206179a (MUL/MULH/MULHS/MULHU #1010). - Implemented limbs-based circuit for DIV/REM opcodes, refactoring division and remainder logic to support modular limb-based construction and correctness for both signed and unsigned operations in ZKVM. Improves reliability and potential performance. Commit: 1c487938c22296aec97f1bdd02fd686f7177e66b (DIV/REM #1022). - Introduced dynamic range checks with variable-bit support in ceno_zkvm, replacing fixed-size checks with configurable mechanisms and new table structures to support different data sizes, increasing adaptability and efficiency. Commit: 27b1fafdd42aef60a0cc6fd8186266238e2cdaac (Dynamic range check #1026). Overall impact and business value: - Strengthened arithmetic reliability and scalability for ZKVM workloads, enabling broader data-size support with lower maintenance overhead. - Enhanced modifiability through feature flags and modular circuit paths, reducing integration risk for future extensions. - Positioned the project to achieve better performance characteristics in constrained environments by enabling limb-based, parallelizable circuit constructions. Technologies and skills demonstrated: - Limb-based circuit design for arithmetic operations and division/remainder - Conditional compilation and feature-flag driven development - Dynamic, configurable range checks and data-size adaptability - Rust/Crypto-like circuit modeling and modular architecture - Attention to correctness across signed/unsigned arithmetic in ZKVM
August 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly work summary for scroll-tech/ceno, focusing on cryptographic protocol integration and test coverage. Migrated the WHIR polynomial commitment to Plonky3 to boost performance and reduce verification cost, with accompanying dependency and internal implementation updates. Expanded test coverage using the BabyBear finite field extension, including end-to-end commit-open-verify and simple-batch-commit-open-verify scenarios to validate correctness under the new field. Implemented tests to ensure compatibility of the WHIR workflow with Plonky3 and BabyBear, laying groundwork for production readiness and future optimizations.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly work summary for scroll-tech/ceno, focusing on cryptographic protocol integration and test coverage. Migrated the WHIR polynomial commitment to Plonky3 to boost performance and reduce verification cost, with accompanying dependency and internal implementation updates. Expanded test coverage using the BabyBear finite field extension, including end-to-end commit-open-verify and simple-batch-commit-open-verify scenarios to validate correctness under the new field. Implemented tests to ensure compatibility of the WHIR workflow with Plonky3 and BabyBear, laying groundwork for production readiness and future optimizations.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary – scroll-tech/ceno Key features delivered: - WHIR Polynomial Commitment Scheme integration: Introduced WHIR (Wrapper for Homomorphic Interactive Representation) as a new polynomial commitment scheme option for the Goldilocks field. Added new WHIR implementation modules and updated dependencies to support cryptographic protocols within Ceno. - WHIR wrapper implemented and wired: Added a dedicated WHIR wrapper and ensured seamless integration with existing PCS framework, enabling usage in cryptographic workflows. Major bugs fixed: - No major bugs fixed this month. Overall impact and accomplishments: - Expanded cryptographic capabilities of Ceno by adding a robust PCS option (WHIR) for the Goldilocks field, enabling more secure and efficient cryptographic protocols. - Improved architecture and extensibility by introducing modular WHIR components and updating dependencies, reducing integration friction for future cryptographic features. - Strengthened review traceability with an explicit commit reference tied to the feature: 59e74dc69ca21801049990da3af09a5fa8d7c7d9 (WHIR wrapper (#742)). Technologies/skills demonstrated: - Cryptographic scheme integration (WHIR PCS) and dependency management - Modular architecture and interface design for cryptographic components - Code traceability and change management with clear commit references - Secure protocol enablement on Goldilocks field
1 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary – scroll-tech/ceno Key features delivered: - WHIR Polynomial Commitment Scheme integration: Introduced WHIR (Wrapper for Homomorphic Interactive Representation) as a new polynomial commitment scheme option for the Goldilocks field. Added new WHIR implementation modules and updated dependencies to support cryptographic protocols within Ceno. - WHIR wrapper implemented and wired: Added a dedicated WHIR wrapper and ensured seamless integration with existing PCS framework, enabling usage in cryptographic workflows. Major bugs fixed: - No major bugs fixed this month. Overall impact and accomplishments: - Expanded cryptographic capabilities of Ceno by adding a robust PCS option (WHIR) for the Goldilocks field, enabling more secure and efficient cryptographic protocols. - Improved architecture and extensibility by introducing modular WHIR components and updating dependencies, reducing integration friction for future cryptographic features. - Strengthened review traceability with an explicit commit reference tied to the feature: 59e74dc69ca21801049990da3af09a5fa8d7c7d9 (WHIR wrapper (#742)). Technologies/skills demonstrated: - Cryptographic scheme integration (WHIR PCS) and dependency management - Modular architecture and interface design for cryptographic components - Code traceability and change management with clear commit references - Secure protocol enablement on Goldilocks field
February 2025
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for scroll-tech/ceno: Delivered code clarity and build stability through a semantic rename and a compile-time fix, enabling future variants and smoother development. Focused on aligning interfaces with semantics, reducing maintenance overhead, and ensuring a stable baseline for upcoming features.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for scroll-tech/ceno: Delivered code clarity and build stability through a semantic rename and a compile-time fix, enabling future variants and smoother development. Focused on aligning interfaces with semantics, reducing maintenance overhead, and ensuring a stable baseline for upcoming features.
November 2024
7 Commits • 2 Features
Nov 1, 2024November 2024 (scroll-tech/ceno): Key feature deliveries focused on BaseFold. - BaseFold Performance Optimization and API Cleanup: improved query complexity per Theorem 1; removed RNG from PCS type parameter; revised trim API for direct public parameter handling. - BaseFold Testing, Benchmarking, and Utilities Modernization: consolidated benchmarks, refactored tests, and updated FieldType utilities/test helpers to speed development. Impact: faster BaseFold workloads, smaller API surface, and streamlined development and measurement pipelines. Technologies/skills demonstrated: performance optimization, API design simplification, benchmarking, refactoring, and test utilities.
7 Commits • 2 Features
Nov 1, 2024November 2024 (scroll-tech/ceno): Key feature deliveries focused on BaseFold. - BaseFold Performance Optimization and API Cleanup: improved query complexity per Theorem 1; removed RNG from PCS type parameter; revised trim API for direct public parameter handling. - BaseFold Testing, Benchmarking, and Utilities Modernization: consolidated benchmarks, refactored tests, and updated FieldType utilities/test helpers to speed development. Impact: faster BaseFold workloads, smaller API surface, and streamlined development and measurement pipelines. Technologies/skills demonstrated: performance optimization, API design simplification, benchmarking, refactoring, and test utilities.
November 2024
Activity
Loading activity data...
Quality Metrics
Correctness94.8%
Maintainability90.0%
Architecture90.0%
Performance89.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyPythonRust
Technical Skills
BenchmarkingCircuit DesignCode ClarityCode RefactoringCriterion.rsCryptographyEnum ManipulationFinite FieldsIteratorLow-Level ProgrammingLow-level ProgrammingPerformance OptimizationPlonky3Polynomial Commitment SchemesRISC-V
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline