# Wasmtime and libwasmtime, with crypto extensions The currently stable version of the Wasmtime WebAssembly runtime, with support for the [WASI Cryptography APIs](https://github.com/WebAssembly/wasi-crypto). ## Installation Install the Rust compiler and compile with: ```sh cargo build --release ``` The resulting executable will be in the `target/release` directory. The library (`libwasmtime.so`, `libwasmtime.dylib`, `libwasmtime.a`) can be compiled with the following command: ```sh cargo build --release -p wasmtime-c-api ``` The files can be found in `target/release` and `crates/c-api/wasm-c-api/include`. In this build, the function to enable WASI (`wasmtime_linker_define_wasi`) will also enable the crypto extensions, so that no code change to existing code depending on `libwasmtime` is necessary. ## Usage ```sh wasmtime run --wasi-modules experimental-wasi-crypto module.wasm ``` ## WASI-Crypto when wasmtime is used as a Rust dependency In Rust applications, `wasi-crypto` can be used directly with the stock `wasmtime` crate downloaded from `crates.io`. See the [`wasmtime-crate-usage-example`](wasmtime-crate-usage-example) directory for an example that runs a WebAssembly module with WASI and WASI-Crypto.