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Key management system deals with the key question for the entire process of key from produce to final destruction ,including system initialization, key generation, storage, distribution, renovation, destruction and more. The paper conducts research for public transportation IC card certification and transmission mechanism. Structuring and modularization are adopted in the design of general encrypt signature algorithm, moreover, a key management system with safety audit function has been proposed and realized. The test shows that the system can be used as an independent management services system with both symmetric key and asymmetric key to ensure safety. It can provide key management and service for the business system. Meanwhile, it can be used in the national urban public transport IC card electronic payment services widely.

Design and Implementation of Key Management System in IC Card Application for Public Transportation