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ACISP
2015
Springer

Towards Forward Security Properties for PEKS and IBE

4 years 2 months ago
Towards Forward Security Properties for PEKS and IBE
In cryptography, forward secrecy is a well-known property for key agreement protocols. It ensures that a session key will remain private even if one of the long-term secret keys is compromised in the future. In this paper, we investigate some forward security properties for Public-key Encryption with Keyword Search (PEKS) schemes, which allow a client to store encrypted data and delegate search operations to a server. The proposed properties guarantee that the client’s privacy is protected to the maximum extent even if his private key is compromised in the future. Motivated by the generic transformation from anonymous Identity-Based Encryption (IBE) to PEKS, we correspondingly propose some forward security properties for IBE, in which case we assume the attacker learns the master secret key. We then study several existing PEKS and IBE schemes, including a PEKS scheme by Nishioka, an IBE scheme by Boneh, Raghunathan and Segev, and an IBE scheme by Arriaga, Tang and Ryan. Our analysis ...
Qiang Tang 0001
Added 13 Apr 2016
Updated 13 Apr 2016
Type Journal
Year 2015
Where ACISP
Authors Qiang Tang 0001
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