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IJISEC
2016

Sakai-Ohgishi-Kasahara identity-based non-interactive key exchange revisited and more

3 years 4 months ago
Sakai-Ohgishi-Kasahara identity-based non-interactive key exchange revisited and more
Identity-based non-interactive key exchange (IB-NIKE) is a powerful but a bit overlooked primitive in identity-based cryptography. While identity-based encryption and signature have been extensively investigated over the past three decades, IB-NIKE has remained largely unstudied. Currently, there are only few IB-NIKE schemes in the literature. Among them, Sakai-Ohgishi-Kasahara (SOK) scheme is the first efficient and secure two-party IBNIKE scheme, which has great influence on follow-up works. However, the SOK scheme required its identity mapping function to be modeled as a random oracle to prove security. Moreover, its existing security proof heavily relies on the ability of programming the random oracle. It is unknown whether such reliance is inherent. In this work, we intensively revisit the SOK IB-NIKE scheme, and present a series of possible and impossible results in the random oracle model and the standard model. In the random oracle model, we first improve previous security ...
Yu Chen, Qiong Huang, Zongyang Zhang
Added 05 Apr 2016
Updated 05 Apr 2016
Type Journal
Year 2016
Where IJISEC
Authors Yu Chen, Qiong Huang, Zongyang Zhang
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