Google's internal mutual authentication/encryption might be of interest. https://cloud.google.com/security/encryption-in-transit/application-layer-transport-sec

Google's internal mutual authentication/encryption might be of interest. https://cloud.google.com/security/encryption-in-transit/application-layer-transport-security https://cloud.google.com/security/encryption-in-transit/appl... They show how far you can drive Protocol Buffer Tokens.