Sentence examples for message authentication sub-protocol from inspiring English sources

Figure 6 shows the flow of key update and broadcast message authentication sub-protocol.

The credible DNP3-BAE protocol proposed in this paper includes two parts: identity authentication and key agreement sub-protocol and key update and broadcast message authentication sub-protocol.

The key update and broadcast message authentication sub-protocol is used frequently in broadcast communications, which uses the encryption primitives in the DNP3-SA specification without the TPM-related time overhead, but adds some communication, computation and storage overhead.

The encrypted data must be decrypted on a device with a Bind- private key. Figure 5 is the identity authentication sub-protocol and key-key negotiation sub-protocol message flow, M is DNP3 communication in the client (MS), O for the server (PLC).

The broadcast authentication sub-protocol completes the sending and authentication of the broadcast message based on the hash chain.

The security target and authentication process of the key update sub-protocol and the broadcast authentication sub-protocol are like the authentication sub-protocol.

Taking the identity authentication sub-protocol as an example, the HLPSL language is used to describe the three roles (MS, PLC and AS) processes and hybrid role participating in the protocol, wherein the role process defines a communication process and an entity variable for the role receive and response message.

The security objective of the identity authentication sub-protocol and the key-negotiation sub-protocol is to ensure the confidentiality of the authentication key KH and the encryption key KE used in the communication sub-protocol, PCR (PcrO and PcrM), and all random numbers such as Na Etc., with strong authentication (authenticity and freshness).

The identity authentication sub-protocol provides periodic verification and updating of the identity and security status information for the MS(M) and PLC O) by configuring the trusted platform and increasing the authentication server (A).

Upon receipt of an AS-initiated update notification, the MS or PLC sets the symmetric keys KH and KE negotiated in the pre-Key Negotiation sub-protocol to be invalid and re-initiates the identity authentication sub-protocol, this process is not repeated by the length limit.

The security objective of the key update and broadcast message sub-protocol is to ensure that the data exchanged between M and O is confidential (high security level) and has integrity, using random numbers with strong authentication.