Dynamic tree-based authenticated group key exchange protocol

2010 ◽  
Vol 53 (8) ◽  
pp. 1591-1602 ◽  
Author(s):  
Hui Li ◽  
ChuanKun Wu ◽  
JiKai Teng
Keyword(s):  
Key Exchange ◽  
Key Exchange Protocol ◽  
Group Key ◽  
Group Key Exchange ◽  
Authenticated Group Key ◽  
Dynamic Tree

scholarly journals A Provably Secure Revocable ID-Based Authenticated Group Key Exchange Protocol with Identifying Malicious Participants

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Tsu-Yang Wu ◽  
Tung-Tso Tsai ◽  
Yuh-Min Tseng
Keyword(s):  
Key Exchange ◽  
Public Key ◽  
Key Exchange Protocol ◽  
Forward Secrecy ◽  
Group Key ◽  
Computation Technique ◽  
Group Key Exchange ◽  
Security Properties ◽  
Authenticated Group Key ◽  
Provably Secure

The existence of malicious participants is a major threat for authenticated group key exchange (AGKE) protocols. Typically, there are two detecting ways (passive and active) to resist malicious participants in AGKE protocols. In 2012, the revocable identity- (ID-) based public key system (R-IDPKS) was proposed to solve the revocation problem in the ID-based public key system (IDPKS). Afterwards, based on the R-IDPKS, Wu et al. proposed a revocable ID-based AGKE (RID-AGKE) protocol, which adopted a passive detecting way to resist malicious participants. However, it needs three rounds and cannot identify malicious participants. In this paper, we fuse a noninteractive confirmed computation technique to propose the first two-round RID-AGKE protocol with identifying malicious participants, which is an active detecting way. We demonstrate that our protocol is a provably secure AGKE protocol with forward secrecy and can identify malicious participants. When compared with the recently proposed ID/RID-AGKE protocols, our protocol possesses better performance and more robust security properties.

A strongly secure identity-based authenticated group key exchange protocol

2015 ◽  
Vol 58 (9) ◽  
pp. 1-12 ◽  
Author(s):  
JiKai Teng ◽  
ChuanKun Wu ◽  
ChunMing Tang ◽  
YouLiang Tian
Keyword(s):  
Key Exchange ◽  
Key Exchange Protocol ◽  
Group Key ◽  
Group Key Exchange ◽  
Identity Based ◽  
Authenticated Group Key
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