Privacy protection method, system and key transmission method for named data network

Abstract

The present invention discloses a privacy protection method, system and key transmission method of a named data network. The privacy protection method is applied to the data request end as follows: sending an interest packet naming request carrying the original name m; when the interest packet naming request is received When responding, receive the Interest package name D corresponding to the original name m, where the Interest package name D is represented by the base point P on the elliptic curve and the point O on the elliptic curve; obtain the mapping F of the original name m on the elliptic curve; according to Map F, base point P, and point O on the elliptic curve, obtain the fuzzy name I of the Interest packet, and send the Interest packet with the fuzzy name I. The invention increases the security of interest packet transmission and protects the privacy of users. In addition, under the same security requirements, it can also reduce the operation time of the data production end and the data request end and reduce the data return delay.

Description

technical field [0001] The present invention relates to a named data network technology, in particular to a privacy protection method, system and key transmission method of a named data network. Background technique [0002] Named Data Networking (NDN) is a new type of future network architecture, which is different from the traditional TCP / IP network architecture. It uses "name" as the identifier of data in the network, rather than the traditional network 's IP address. figure 1 A schematic diagram of the architecture of the named data network. like figure 1 As shown, in a named data network, there are two main types of packets, Interest and Data. The legitimate data requester can get the corresponding data back by sending the constructed interest packet to the network. Among them, Interests and Data packets are named with strings. However, the names of Interest and Data packets are readable, which means that when these two kinds of packets are transmitted in the netwo...

AI Technical Summary

Problems solved by technology

There are literatures (Massawe,E.A.,Du,S.,\&Zhu,H.(2013,July).A scalable and privacy-preserving named data networking architecture based on Bloom filters.In 2013IEEE 33rd International Conference on Distributed Computing Systems Workshops(pp.22 -26).IEEE) proposes to use the Bloom filter to convert the name to the Bloom filter to achieve a blurred effect. However, the size of the Bloom filter needs to be set in advance, otherwise it will cause a bit error rate high disadvantage

There are documents (Jiang X, Huang Q. Efficiently Preserving the Privacy of the Semantic Routing in Named Data Network[C] / / IEEE, Intl Confon Ubiquitous Intelligence and Computing and 2015IEEE, Intl Conf on Autonomic and Trusted Computing and 2015IEEE, Intl Conf on Scalable Computing andCommunications and ITS Associated Workshops.IEEE Computer Society,2015:686-689) proposed to use the integer group to convert the naming to the integer group. However, the theoretical safety limit of this method is that a prime number of at least 1024 bits is required, which is for some Devices with limited resources are not friendly, see some related papers on IEEE (Akyildiz I F, Su W, Sankarasubramaniam Y, et al.A survey on sensor networks[J].IEEE Communications magazine,2002,40(8):102 -114)

In addition, there are some researches in academia on solutions to the security problems of the content value of data packets in named data networks, but none of them consider the security problems of naming

[0005] In addition, in the previous literature, researchers paid more attention to the problem of how to encrypt the data content value, but seldom considered how to reasonably distribute the encrypted key to the legal data requester.

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