Arm Limited Arm Limited Arm Limited Arm Limited Arm Limited Various attestation technologies have been developed and formats have been standardized. Examples include the Entity Attestation Token (EAT) and Trusted Platform Modules (TPMs). Once attestation information has been produced on a device it needs to be communicated to a relying party. This information exchange may happen at different layers in the protocol stack. This specification provides a generic way of passing attestation information in the TLS handshake.