Abstract
SGIT(Interactive Terminal of Smart Grid) access to the intranet of electric power information, expanding the boundaries of network protection and bringing in risks of security. Based on safe requirement and trust computing theory, TCM(Trust Cryptographic Module) and TAS(Trust Access Server) are introduced to Interactive terminals and boundary of information network respectively. Trusted operating environment, trusted identity and credible communication are ensured through the cooperative work of TCM and TAS, which makes terminals be accessed credibly. The emphasis is the remote attestation model and trusted authentication protocols based on the verifier. The analysis of this mechanism was made, which indicates that this mechanism can make sure the credible access of SGIT and has practical application value.
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