Security Analysis of the Improved AKA Protocol based on Public-key Algorithm
Liu Zhen-ju · Communications technology · 2013
3G-system security framework,with AKA protocol mechanisms suggested by 3GPP organization,implements crypto protection of transmission data on wireless link,including integrity protection of the signaling messages. Compared with 2G system,3G system receives great improvement in the security of wireless air interface. However,since the proposal of AKA protocol,many foreign scholars have carried out detailed study on the protocol,and found a lot of security problems,and proposed some suggestions for improvement. In this article,the authors,with a protocol-element confidentiality derivation method,analyze the security of 3GPP AKA protocol and the improved AKA protocol,then point out the vulnerability existing in the improved AKA insecurity,and also proposes the method for improvement.