Research And Implementation Of Privacy Protection Mechanism For Named Data Networking

Named Data Networking is a future network,which takes named interest packet and data packet as its main characteristics,and realizes rapid delivery of data.In Named Data Networking,the name scheme of interest packet and data packet is usually a semantic string,and it is also the description information of requested data.Although this name scheme is easy to understand,it is easy to expose the user's privacy information,leaving a great security risk.In addition,the data value in the data packet may also expose the user's privacy.Although data value does not have the characteristics of semantic and readability like the name,it belongs to the legitimate data requester and cannot be obtained by other nodes in the network.If the data value is not protected,there is a risk of user privacy disclosure.Therefore,in this thesis,we first propose a name privacy protection mechanism for Named Data Networking.The mechanism proposed in this thesis is based on the discrete logarithm problem on the elliptic curve.The original semantic name is obfuscated to become human-illegible,so that the name-obfuscated interest packets and name-obfuscated data packets are obtained.At the same time,it does not affect the normal communication and original advantages of Named Data Networking.Then,we propose a complete data privacy protection mechanism for Named Data Networking.We not only use encryption to protect the data value in the data packet,but also design a protection mechanism for the decryption key.At the same time,we use Named Data Networking to realize the efficient and secure transmission of the decryption key.Finally,we build Named Data Networking system,to deploy and verify the privacy protection mechanism proposed in this thesis.The experimental results show that the privacy protection mechanism proposed in this thesis is reasonable and efficient.Compared with the existing mechanism,it has obvious advantage in spatio-temporal complexity.