Abstract: The present disclosure provides an access control method, an access control apparatus, a network side device, a terminal and a blockchain node, wherein the access control method includes: receiving relevant information to be verified that is sent by a terminal and corresponds to an access request, wherein the relevant information to be verified includes private key signature information of the terminal and position information of preset information in the blockchain; acquiring the preset information from the blockchain according to the position information; verifying the terminal according to the private key signature information and the preset information; acquiring, in a case that verification is passed, attribute information of the terminal from a blockchain ledger according to the preset information; and feedbacking a request response for access control to the terminal according to the attribute information.

Abstract: In a blockchain-based SDP access control method and apparatus, an SDP connection initiation host submits identity authentication request information to a blockchain system node, receives an authentication result feedback after verification; sends, to the blockchain system node, a query request for an SDP connection accepting host list that can be accessed, the query request including an authentication result of the blockchain system node for the SDP connection initiation host; after verifying the query request, the blockchain system node queries the SDP connection accepting host list that can be accessed by the SDP connection initiation host, and records the SDP connection accepting host list to a blockchain ledger; the SDP connection initiation host initiates a connection request to the SDP connection accepting host, queries the SDP connection accepting host list that can be accessed by the SDP connection initiation host; and if so, then access service is provided.

Abstract: A digital certificate processing method includes: receiving a distribution request for a digital certificate, wherein the digital certificate does not contain validity period information; acquiring a verification result for the digital certificate; and according to the verification result, recording the digital certificate which has passed verification to a blockchain.

Abstract: A digital certificate processing method includes: receiving a distribution request for a digital certificate, wherein the digital certificate does not contain validity period information; acquiring a verification result for the digital certificate; and according to the verification result, recording the digital certificate which has passed verification to a blockchain.