NewClientTLSConfig uses the private key and public keys to construct a mutual TLS config for the client.

NewServerTLSConfig uses the private key and public keys to construct a mutual TLS config for the server.

PubKeyFromCert extracts the public key from the cert and returns it as a statically sized byte array.

ToStaticallySizedPublicKey converts an ed25519 public key into a statically sized byte array.

PublicKeys wraps a slice of keys so we can update the keys dynamically.

TransportCredentials defines the TLS configuration for establishing a connection.