Switch to aws_lc_rs

[kixelated]

And remove the sha256 crate dependency.

Fixes #56

[kixelated]

wasn't needed but oh well

[nirbheek]

Would it be possible for -quinn to use ring instead? The package is maintained again. aws_lc_rs's actual implementation is AWS-LC which is C/C++, and needs to be built using build.rs -> cmake, which fails to build on many of our configurations in GStreamer: cross-ios, cross-android, and msvc.

The original reason for switching away from sha2 was the transitive deps, but there's a lot more (unsafe!) code being pulled in with aws-lc-rs.

We've had to revert to web-transport-quinn 0.3.3 because of this.

If you need to support aws-lc-rs, maybe the switch can be behind a feature flag?

[kixelated]

Would it be possible for -quinn to use ring instead? The package is maintained again. aws_lc_rs's actual implementation is AWS-LC which is C/C++, and needs to be built using build.rs -> cmake, which fails to build on many of our configurations in GStreamer: cross-ios, cross-android, and msvc.

The original reason for switching away from sha2 was the transitive deps, but there's a lot more (unsafe!) code being pulled in with aws-lc-rs.

We've had to revert to web-transport-quinn 0.3.3 because of this.

If you need to support aws-lc-rs, maybe the switch can be behind a feature flag?

Ya I suppose a feature flag makes sense.