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Piotr Sawicki

PROFILE

Piotr Sawicki

Worked on the islet-project/islet repository, delivering features and fixes across embedded systems, security, and provisioning workflows. Developed and enhanced drivers, implemented AES-256-GCM data sealing, and aligned kernel interfaces to improve hardware interoperability and data protection. Addressed protocol handling and reliability in the tf-a-rss module, while refining memory management and lifecycle safety for secure realm operations. Maintained code quality through CI/CD improvements, static analysis, and documentation updates, using C, Rust, and Shell scripting. Focused on dependency alignment, submodule management, and technical writing to streamline onboarding, reduce setup errors, and ensure long-term maintainability across complex system integrations.

Overall Statistics

Feature vs Bugs

64%Features

Repository Contributions

34Total
Bugs
5
Commits
34
Features
9
Lines of code
46,843
Activity Months6

Work History

June 2026

2 Commits

Jun 1, 2026

June 2026 monthly summary for islet-project/islet: This period focused on documentation quality and CI hygiene, delivering targeted fixes to improve navigability and reduce CI noise. Key efforts included documentation link enhancements for the Remote Attestation Example and an Islet HES link, along with CI/script cleanliness to satisfy shfmt formatting rules.

May 2026

14 Commits • 4 Features

May 1, 2026

During May 2026, the Islet project delivered substantial testing/runtime enhancements, aligned with the RMM specification, and elevated code quality and documentation. Key outcomes include enabling Guest Private Memory for Islet/Arm CCA testing with a dedicated realm test runner, aligning CCA attestation mocks to RMM 1.0-rel0, and deploying compatibility workarounds and updated unit test expectations to improve test fidelity. The SDK was updated for rust-rsi compatibility with RMM 1.0-rel0, including a corrected example profile string. Toolchain, CI, and code quality were strengthened through a Rust nightly upgrade, Miri unsafe analysis, cargo-vet stabilization, SIMD handling improvements, clippy remediation, and formatting fixes. Documentation was expanded to cover Islet RMM, HES crate docs, and the new doc structure.

April 2026

2 Commits • 1 Features

Apr 1, 2026

Month: 2026-04 — Focused on improving the tf-a-rss module reliability and protocol handling within islet. Implemented a workaround and extra HES communication module checks, and applied small fixes to Serial/embed protocol handling to enhance robustness and reliability. Commits provide traceability for the changes (198f5b76f2376658f273e340f642cebde8ad579f; 9a677f6e213c6f7a9590a3006d06f3b358ffe272). Impact: higher uptime, fewer communication failures, and improved data integrity across the tf-a-rss subsystem. Demonstrated skills in embedded systems, submodule management, hardware-software integration, protocol engineering, debugging, and Git workflows.

November 2024

2 Commits

Nov 1, 2024

Month: 2024-11 — Focused on stabilizing provisioning and dependency alignment for islet to prevent version drift and simplify onboarding. Delivered targeted fixes to ensure the tf-rmm submodule points to the official repository and the correct branch, and streamlined provisioning setup by removing unnecessary branch constraints. The changes improve reproducibility and reduce setup errors across environments.

October 2024

3 Commits • 2 Features

Oct 1, 2024

October 2024 highlights for islet-project/islet. Delivered two major features focused on hardware interface reliability and security enhancements, while performing targeted maintenance to align dependencies and submodule references. The work improves hardware interoperability, strengthens data protection, and streamlines provisioning tooling.

September 2024

11 Commits • 2 Features

Sep 1, 2024

September 2024 monthly summary for islet-project/islet focusing on security, reliability, and lifecycle management across the RSI driver and RIM tooling. Key outcomes include realm metadata handling, sealing key management, RSI driver IOCTL interfaces, memory model improvements, RIM measurement alignment with EAC5, and documented rim-measurer tooling. Fixed critical bugs in TF-RMM macro naming and realm destruction without metadata. These contributions improve security posture, interoperability, and operational stability, enabling safer realm lifecycles and accurate attestation metrics.

Activity

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Quality Metrics

Correctness93.8%
Maintainability91.2%
Architecture92.0%
Performance90.6%
AI Usage20.6%

Skills & Technologies

Programming Languages

CC++MarkdownNoneRustShellTOMLUnknownYAMLgit

Technical Skills

ARM architectureC programmingC++ developmentCI/CDCode quality improvementConfiguration ManagementContinuous IntegrationCryptographyDependency ManagementDevOpsDocumentationEmbedded SystemsFirmware DevelopmentGitGit Submodule Management

Repositories Contributed To

1 repo

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

islet-project/islet

Sep 2024 Jun 2026
6 Months active

Languages Used

CMarkdownNoneRustUnknownC++ShellTOML

Technical Skills

C programmingNoneRustRust programmingUnknownVersion Control