Implement chat signature verification

[Xernium]

The proxy needs to track and verify message signatures based on the players public key as well as components which are preview-signed

[Smart123s]

Would this break the functionality No-Chat-Reports mod?

[Xernium]

Would this break the functionality No-Chat-Reports mod?

Not if that mod follows the signature conventions. If you are authenticated using the signature key then the proxy will enforce signatures, but it can’t do that while you’re not authenticated by key.

[Codestech1]

Why? This will break minecraft servers too.