This is Mbed TLS, packaged for Zig.
First, update your build.zig.zon:
# Initialize a `zig build` project if you haven't already
zig init
zig fetch --save git+https://github.com/allyourcodebase/mbedtls.git
You can then import mbedtls in your build.zig with:
const mbedtls_dependency = b.dependency("mbedtls", .{
.target = target,
.optimize = optimize,
});
your_exe.root_module.linkLibrary(mbedtls_dependency.artifact("mbedtls"));