Frank Rehberger

Device-Mapper’s “verity” target provides transparent integrity checking of block devices using a cryptographic digest provided by the kernel crypto API. This target is read-only.

This presentation will illustrate how to integrate dm-verity with A/B booting as u-boot as used in project opencritis.org.

Rust is associated with performance, memory safety and control of memory usage. Embedding dynamic runtimes such as for Lua or Javascript for dynamic scripting within the Rust-App would introduce an huge overhead. A WebAssembly-engine seems to be a good choice as compact and portable runtime environment. JIT-compiler may be used in future to transform WASM files to native code.

The talk will present WebAssembly technology and the benefits and pitfalls integrating it into a Rust-app. Small routines are implemented in C++/Rust and compiled to Wasm. The Rust-App is loading the wasm-code as plugin at runtime to execute dynamic tasks.