bytecodealliance/lucetArchived
Lucet
Lucet is a WebAssembly runtime and sandboxing compiler that translates WebAssembly bytecode into native machine code. It serves as a secure execution environment and native code generator designed to run untrusted code while preventing unauthorized access to host system resources.
The project focuses on high-performance sandboxing by using ahead-of-time compilation to achieve near-native execution speeds. It implements software-based fault isolation and a host-call interface to manage secure communication and data exchange between the isolated module and the external host application.
The system provides capabilities for native machine code generation, linear memory mapping, and sandbox-based execution to ensure strong memory isolation.
Features
- Code Execution Sandboxes - Provides a secure, isolated execution environment to run untrusted WebAssembly code without compromising host system resources.
- WebAssembly AOT Compilers - Compiles WebAssembly bytecode into native machine code prior to execution for near-native performance.
- Sandboxing Compilers - Translates WebAssembly bytecode into native machine code specifically for execution within a secure, isolated sandbox.
- WebAssembly Sandboxing - Executes untrusted WebAssembly code in a secure environment to protect host memory and system resources.
- WebAssembly Execution Modes - Provides a runtime that compiles and executes WebAssembly modules within a secure sandbox.
- High-Performance Sandboxing - Achieves near-native execution speeds for isolated code by utilizing ahead-of-time compilation.
- Machine Code Generation - Generates architecture-specific native machine code from WebAssembly bytecode to eliminate interpreter overhead.
- Machine Code Generators - Converts portable WebAssembly instructions into optimized machine code specific to the host hardware.
- Ahead-of-Time Wasm Execution - Implements ahead-of-time compilation of WebAssembly bytecode into native machine code for high-performance execution.
- WebAssembly Runtimes - Acts as a high-performance execution environment for compiled WebAssembly modules with strong memory isolation.
- Secure Execution Environments - Provides a sandboxed system designed to run untrusted code while preventing unauthorized host resource access.
- Software-Based Fault Isolations - Implements software-based fault isolation to restrict memory access via guard pages and bounds checking.
- Host-Call Interfaces - Provides a host-call interface to manage secure communication and data exchange between sandboxed modules and the host.
- Isolated Code Execution - Ensures secure code execution by running programs in an isolated environment to prevent host system access.
- Linear Memory Sharing - Utilizes linear memory mapping to provide fast indexing and memory isolation for WebAssembly modules.
