Title :
nPAKE: An Improved Group PAKE Protocol
Author :
Liu, Xiumei ; Liu, Junjiang ; Chang, Guiran
Author_Institution :
Comput. Center, Northeastern Univ., Shenyang, China
Abstract :
In this paper, we propose an improved password-based authentication key exchange protocol for group, which called nPAKE. In the protocol, each client shares a password with the server and the adjacent clients share a temporary encryption key with the help of server, so it can reduce the communication costs between the clients and server. nPAKE protocol is based on the chosen-based computation Diffie-Hellman assumption. By security analysis, we show that our protocol can resist the dictionary attacks, Tang-Chen attack and man-in-the-middle attack.
Keywords :
cryptographic protocols; message authentication; Diffie-Hellman assumption; Tang-Chen attack; communication cost reduction; dictionary attack; encryption key; group PAKE protocol; man-in-the-middle attack; nPAKE protocol; password-based authentication key exchange protocol; security analysis; Authentication; Cryptography; Dictionaries; Protocols; Resists; Servers; CCDH; N-Party; dictionary attack; different password-authenticatio;
Conference_Titel :
Web Information Systems and Applications Conference (WISA), 2012 Ninth
Conference_Location :
Haikou
Print_ISBN :
978-1-4673-3054-1
DOI :
10.1109/WISA.2012.42
