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Password-Based Group Authenticated Key Exchange Protocol: From 3-Party to Group

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3 Author(s)
Minghui Wang ; Sch. of Inf. Eng., Yancheng Inst. of Technol., Yancheng, China ; Junhua Pan ; Jiandong Wang

Password-based authenticated group key exchange (denoted by PGKE) provides n parties who hold a common human-memorable password for secure group communication. In this paper, applying the cryptographic technique to a password-authenticated 2-party key establishment protocol without random oracle assumption, a password-authenticated group key exchange under the help of a trusted server with CDH assumption is proposed. Comparing with other existing protocols, this protocol does not require any Server's public key and encryption of simple password (low-entropy).

Published in:

Network Computing and Information Security (NCIS), 2011 International Conference on  (Volume:1 )

Date of Conference:

14-15 May 2011