Data transmission protocol execution methods and apparatuses

Abstract

This specification provide computer-implemented methods, and apparatuses for data transmission protocol execution and data storage. Execution of a data transmission protocol includes an initiator and a receiver. In an example execution process, a first application serving as the initiator encapsulates protocol information related to a transmission handshake protocol, ciphertext data obtained by encrypting target privacy data using an encryption method determined based on the protocol information, signature information obtained by digitally signing the ciphertext data and the protocol information using a private key, field content of an attestation field, and the like into a data transmission unit. The attestation field is used to fill a remote attestation report that includes public key information of the initiator. A second application serving as the receiver decapsulates the data transmission unit, and uses the target privacy data after verifying the signature information and the like in the decapsulated data transmission unit.