Abstract
In 2008, based on the two-party Diffie-Hellman technique, Biswas proposed a contributory group key exchange protocol called the Group-DH protocol. This contributory property is an important one of group key agreement. Unfortunately, in this paper we show that the proposed Group-DH protocol is not a contributory group key exchange protocol. Therefore, we propose an improved group key exchange protocol with verifiably contributory property based on the same Diffie-Hellman technique. When an identical group key is constructed, each participant can confirm that his/her contribution is actually included in the group key. We show that the improved protocol is provably secure against passive attacks under the decisional Diffie-Hellman assumption. As compared to the previously proposed group key exchange protocols, our protocol provides contributiveness and the required computational cost is suitable for low-power participants in a network environment.
| Original language | English |
|---|---|
| Pages (from-to) | 247-258 |
| Number of pages | 12 |
| Journal | Informatica |
| Volume | 21 |
| Issue number | 2 |
| Publication status | Published - 2010 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Information Systems
- Applied Mathematics
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Analysis and improvement on a contributory group key exchange protocol based on the Diffie-Hellman technique. / Tseng, Yuh Min; Wu, Tsu Yang.
In: Informatica, Vol. 21, No. 2, 01.01.2010, p. 247-258.Research output: Contribution to journal › Article
TY - JOUR
T1 - Analysis and improvement on a contributory group key exchange protocol based on the Diffie-Hellman technique
AU - Tseng, Yuh Min
AU - Wu, Tsu Yang
PY - 2010/1/1
Y1 - 2010/1/1
N2 - In 2008, based on the two-party Diffie-Hellman technique, Biswas proposed a contributory group key exchange protocol called the Group-DH protocol. This contributory property is an important one of group key agreement. Unfortunately, in this paper we show that the proposed Group-DH protocol is not a contributory group key exchange protocol. Therefore, we propose an improved group key exchange protocol with verifiably contributory property based on the same Diffie-Hellman technique. When an identical group key is constructed, each participant can confirm that his/her contribution is actually included in the group key. We show that the improved protocol is provably secure against passive attacks under the decisional Diffie-Hellman assumption. As compared to the previously proposed group key exchange protocols, our protocol provides contributiveness and the required computational cost is suitable for low-power participants in a network environment.
AB - In 2008, based on the two-party Diffie-Hellman technique, Biswas proposed a contributory group key exchange protocol called the Group-DH protocol. This contributory property is an important one of group key agreement. Unfortunately, in this paper we show that the proposed Group-DH protocol is not a contributory group key exchange protocol. Therefore, we propose an improved group key exchange protocol with verifiably contributory property based on the same Diffie-Hellman technique. When an identical group key is constructed, each participant can confirm that his/her contribution is actually included in the group key. We show that the improved protocol is provably secure against passive attacks under the decisional Diffie-Hellman assumption. As compared to the previously proposed group key exchange protocols, our protocol provides contributiveness and the required computational cost is suitable for low-power participants in a network environment.
UR - http://www.scopus.com/inward/record.url?scp=77954807684&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954807684&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77954807684
VL - 21
SP - 247
EP - 258
JO - Informatica
JF - Informatica
SN - 0868-4952
IS - 2
ER -