[olix0r]

That's Brian's point. rustls/webpki/ring do not have funding in line with projects like Go's crypto or BoringSSL:

> ... ARM, Amazon Web Services, Google, and Microsoft [...] should support the Rust community by letting their experts help the Rust community create FIPS-validated cryptography libraries written entirely in safe Rust that expose safe and idiomatic Rust APIs.

Rust's large corporate sponsors need to step up to make these crates more broadly suitable for production.

[pjmlp]

Those corporate sponsors are currently still using C and C++ for this kind of stuff and there is no change in sight.

Alone how much Azure Sphere gets sold as high security device, and the SDK is C only. There is a new preview support for Rust, yet nothing announced for the stable product, only C on that one.