AdaCore Blog

Johannes Kliemann

Johannes Kliemann

Johannes Kliemann is a cross and embedded engineer at AdaCore. He specializes in systems architecture and security and is interested in formal verification, operating systems development and embedded devices.

3 entries written by Johannes Kliemann

by Johannes Kliemann

CheriBSD: A Showcase for Hardware-Supported Security

Over the course of the last few years and as part of the 'Edge Avionics' project, funded by the Rapid Capabilities Office (RCO) of the UK Royal Air Force (UK RAF), AdaCore has been developing toolchain solutions for Capability Hardware Enhanced RISC Instructions (CHERI) microprocessor architectures. In addition, AdaCore evaluated security claims made by the CHERI community through the Digital Security by Design (DSbD) initiative. The goal was to inform Edge Avionics project partners about the level of security assurance offered by the Arm Morello microprocessor; a modified Arm Neoverse N1 supporting the Armv8-A architecture and conforming to the CHERI compartmentalization specification. The DSbD project is now in the final stages, the overarching goal of mass adoption of CHERI-architectures is now looked after by the CHERI Alliance.

#CHERI   

by Johannes Kliemann

Adding Ada to Rust

While implementing application logic in Ada or SPARK is an improvement over a pure C project, its weakest link is still the C code in the SDK. On the other hand, there are many libraries, board support packages, and SDKs written in Rust, easily usable with Cargo. So instead of building the Ada application on top of a C base, one could use a Rust base instead to combine the large catalog of ready-to-use software with Rust's safety features, providing a much more solid base for an Ada project.