基于IC协议的分块加密方案及其应用.

The problem of leaking through express sheet brings security risks to individuals, but also restricts the rapid development of express enterprises. This paper studied the privacy protection of express sheet. By combining the identity based encryption system (BF-IBE), the idea of authority design and the two-dimensional code technology, this paper designed a block encryption scheme. The scheme used a new private key distribution protocol (IC protocol) to solve the key management problem. This paper applied the block encryption scheme to the domain of express privacy protection, and designed a new privacy express sheet and express business process. The results show that the IC protocol uses in the block encryption scheme needs no inverse operation, and the bilinear pairings can be effectively reduced and the key management can be carried out easily. The encryption and decryption efficiency of the block encryption scheme is similar to that of BF-IBE. Its security is based on the discrete logarithm problem on elliptic curves. It can be applied to express field, which can effectively protect the user’s privacy. It is also suitable for other areas with block encryption requirements. [ABSTRACT FROM AUTHOR]