An Anonymous Roaming Authentication protocol with minimal exchanged message

• Main Authors: Chi-Hsiang Hung, 洪吉祥
• Other Authors: Lih-Chyau Wuu
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/15942391570703243715

碩士 === 國立雲林科技大學 === 電子與資訊工程研究所 === 94 === We propose an off-line roaming authentication protocol which not only the server in a foreign network authenticates any roaming user without the involvement of the home network, but also the anonymity of the user is preserved. That is, the user can prove his/her roaming legality without letting the server know his/her real identity. We employ the ID-based signature technique and secret sharing technique to provide the user anonymity and non-repudiation of roaming service during the mutual authentication process. The proposed scheme only requires two messages exchanged between the roaming user and the server, and a polynomial function is designed to revoke the roaming service of an illegal user.