lowRISC/opentitan
May 2025 – Oct 2025
6 Months active
Languages Used
CJSONRustPythonStarlarkAssemblyMarkdownSystemVerilog
Technical Skills
Assembly LanguageEmbedded SystemsFirmware DevelopmentHardware SecurityLow-Level ProgrammingPenetration Testing
Siemen Dhooghe
PROFILE
Siemen Dhooghe
Over six months, Steven Dhooghe engineered security validation and penetration testing infrastructure for the lowRISC/opentitan repository, focusing on embedded systems and cryptographic robustness. He developed modular Python and C-based frameworks that integrated cryptolib tests, expanded hardware alert coverage, and enabled FPGA compatibility, supporting both firmware and hardware validation. His work included optimizing assembly routines, implementing side-channel and fault-injection resistance, and automating test flows through CI/CD pipelines. By enhancing test determinism, reliability, and observability, Steven reduced validation cycle times and improved early regression detection, demonstrating depth in low-level programming, hardware security, and scalable test architecture across diverse hardware targets.
Overall Statistics
Feature vs Bugs
81%Features
Repository Contributions
60Total
Bugs
6
Commits
60
Features
26
Lines of code
41,557
Activity Months6
Your Network
4235 people
Work History
October 2025
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10: Delivered targeted CW340 FPGA penetration-testing enhancements in opentitan, enabling GDB-based testing of the CW340 RMA lifecycle. Implemented a new pentest target (fpga_cw340_rom_ext) and updated the build/configuration to register and expose it within the existing test harness. This expands hardware test coverage, shortens validation cycles, and improves early detection of regressions in FPGA firmware/RTL interactions.
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10: Delivered targeted CW340 FPGA penetration-testing enhancements in opentitan, enabling GDB-based testing of the CW340 RMA lifecycle. Implemented a new pentest target (fpga_cw340_rom_ext) and updated the build/configuration to register and expose it within the existing test harness. This expands hardware test coverage, shortens validation cycles, and improves early detection of regressions in FPGA firmware/RTL interactions.
October 2025
September 2025
16 Commits • 2 Features
Sep 1, 2025September 2025 (2025-09) achievements in lowRISC/opentitan focused on security hardening, testability, and reliability. Delivered a Python-based penetration testing framework with cryptolib test integration, expanded test scripts/build targets, and improved testing infrastructure; implemented comprehensive cryptographic library hardening to mitigate side-channel and fault attacks, including hardened macros, launder functions, and checksum verifications. Fixed a critical alert handling bug in penetration testing firmware to ensure alerts remain properly unconfigured when disabled. These efforts collectively reduce risk in security-critical firmware, accelerate validation cycles, and demonstrate strong cross-disciplinary skills in software, cryptography, hardware-test tooling, and CI workflows.
September 2025
16 Commits • 2 Features
Sep 1, 2025September 2025 (2025-09) achievements in lowRISC/opentitan focused on security hardening, testability, and reliability. Delivered a Python-based penetration testing framework with cryptolib test integration, expanded test scripts/build targets, and improved testing infrastructure; implemented comprehensive cryptographic library hardening to mitigate side-channel and fault attacks, including hardened macros, launder functions, and checksum verifications. Fixed a critical alert handling bug in penetration testing firmware to ensure alerts remain properly unconfigured when disabled. These efforts collectively reduce risk in security-critical firmware, accelerate validation cycles, and demonstrate strong cross-disciplinary skills in software, cryptography, hardware-test tooling, and CI workflows.
August 2025
4 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — LowRISC/opentitan: Delivered consolidated Penetration Testing Enhancements across hardware alerts, crypto tests, FPGA compatibility, and test reliability. Implemented configurable AES test inputs in crypto_fi, adjusted pentest init to disable flash fatal alerts for FPGA compatibility, and aligned random value generation in Ibex SCA tests to improve reliability and comparability. These changes broaden security coverage, improve test reliability across platforms, and accelerate cross-hardware validation, supporting higher confidence in hardware/firmware security before release.
4 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — LowRISC/opentitan: Delivered consolidated Penetration Testing Enhancements across hardware alerts, crypto tests, FPGA compatibility, and test reliability. Implemented configurable AES test inputs in crypto_fi, adjusted pentest init to disable flash fatal alerts for FPGA compatibility, and aligned random value generation in Ibex SCA tests to improve reliability and comparability. These changes broaden security coverage, improve test reliability across platforms, and accelerate cross-hardware validation, supporting higher confidence in hardware/firmware security before release.
August 2025
July 2025
29 Commits • 19 Features
Jul 1, 2025July 2025 monthly summary for lowRISC/opentitan focused on delivering cryptographic capability, expanding test coverage, and strengthening CI/build integrity, while improving test determinism and resilience. Key work spanned feature scaffolding, broader cryptographic targets, test instrumentation, and observability enhancements that collectively increase security, reliability, and engineering velocity.
July 2025
29 Commits • 19 Features
Jul 1, 2025July 2025 monthly summary for lowRISC/opentitan focused on delivering cryptographic capability, expanding test coverage, and strengthening CI/build integrity, while improving test determinism and resilience. Key work spanned feature scaffolding, broader cryptographic targets, test instrumentation, and observability enhancements that collectively increase security, reliability, and engineering velocity.
June 2025
5 Commits • 2 Features
Jun 1, 2025June 2025 (2025-06) monthly summary for lowRISC/opentitan: Key features delivered include Sensor Control and Alert Integration in the Pentest Framework and Cryptographic Test Framework Enhancements with modularization and FvsR testing. No explicit critical bugs fixed this month; focus was on architecture, test coverage, and framework improvements that enable scalable security validation. Overall impact: broadened test coverage, reduced risk in sensor/alert handling, and established a scalable cryptographic testing foundation across multiple curves.
5 Commits • 2 Features
Jun 1, 2025June 2025 (2025-06) monthly summary for lowRISC/opentitan: Key features delivered include Sensor Control and Alert Integration in the Pentest Framework and Cryptographic Test Framework Enhancements with modularization and FvsR testing. No explicit critical bugs fixed this month; focus was on architecture, test coverage, and framework improvements that enable scalable security validation. Overall impact: broadened test coverage, reduced risk in sensor/alert handling, and established a scalable cryptographic testing foundation across multiple curves.
June 2025
May 2025
5 Commits • 1 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on key accomplishments, major bugs fixed, and business value for lowRISC/opentitan. Delivered enhancements to the Penetration Testing Framework and a critical firmware test bug fix, resulting in stronger security validation and faster feedback loops.
May 2025
5 Commits • 1 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on key accomplishments, major bugs fixed, and business value for lowRISC/opentitan. Delivered enhancements to the Penetration Testing Framework and a critical firmware test bug fix, resulting in stronger security validation and faster feedback loops.
Activity
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Quality Metrics
Correctness89.6%
Maintainability87.4%
Architecture85.4%
Performance75.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyBUILDCJSONMarkdownPythonRustStarlarkSystemVerilog
Technical Skills
API DevelopmentAssembly LanguageAssembly Language OptimizationAssembly Language ProgrammingBug FixingBuild System ConfigurationBuild SystemsC ProgrammingCI/CDCode FormattingCode RefactoringCryptographyDocumentationDriver DevelopmentEmbedded Systems
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