Access control method for air ticket distribution system based on blockchain

The air ticket distribution system is a platform to integrate the resources of ticket agents around the ticket sales. It is responsible for connecting ticket suppliers and passengers, and mainly undertakes the services of flight inquiries, air ticket reservation and ticket issuance. However, due to the insufficient access control authority and lax internal supervision and other reasons, passengers' privacy information is frequently leaked, which seriously damage the interests of passengers and airlines. Based on the analysis of ticket distribution process, this paper proposes a blockchain-based access control model for ticket distribution system, aiming at protecting passengers' privacy information and property security. The model is based on Hyperledger Fabric 1.0, which uses the SM2 cryptographic algorithm to replace the default algorithm of the ledger. Experimental results show that the access control method based on blockchain can realize distributed access decision and prevent passenger information from being tampered with illegally. Compared with RSA algorithm, SM2 algorithm is used in the test to generate employee transactions, generate PNR transaction and permission query transaction. The total time is decreased by 17.13%, which is more efficient in each single transaction. Therefore, it is feasible and necessary to the reform of the ledger cryptographic algorithm.