A Novel Variable K-Pseudonym Scheme Applied to 5G Anonymous Access Authentication
This addresses privacy and security issues for users in 5G networks, particularly for mobile devices with limited resources, but it is incremental as it builds upon existing pseudonym schemes.
The paper tackles the problem of anonymous access authentication in 5G networks by proposing a scheme that uses variable shard pseudonyms to protect user identities without relying on Public Key Infrastructure, achieving resistance to mark attacks and verifying anonymity through BAN logic analysis.
Anonymous access authentication schemes provide users with massive application services while protecting the privacy of users' identities. The identity protection schemes in 3G and 4G are not suitable for 5G anonymous access authentication due to complex computation and pseudonym asynchrony. In this paper, we consider mobile devices with limited resources in the 5G network and propose an anonymous access authentication scheme without the Public Key Infrastructure. The anonymous access authentication scheme provides users with variable shard pseudonyms to protect users' identities asynchronously. With the variable shared pseudonym, our scheme can ensure user anonymity and resist the mark attack, a novel attack aimed at the basic k-pseudonym scheme. Finally, we analyze the scheme with BAN logic analysis and verify the user anonymity.