Fuzzy Identity-Based Threshold Key-Insulated Encryption with Ciphertext Policy

DOI

10.2991/iceep-18.2018.209How to use a DOI?

Keywords

Threshold key-insulated; fuzzy identity based; encryption; ciphertext policy.

Abstract

To solve the signing key exposure problem in fuzzy identity-based encryption systems with ciphertext policy, we propose a fuzzy identity-based threshold key-insulated encryption scheme with ciphertext policy (FIBTKIE-CP) which is provably secure. Our scheme is key-insulated and strongly key-insulated. Even if temporary private keys for up to N-1 time periods are compromised, an adversary is still unable to obtain this user’s temporary private key from the remaining time period. Even if up to k − 1 helpers are exposed and all temporary private keys are compromised, the adversary still can not harm the security of the non-exposed periods..

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianhong Chen
PY  - 2018/09
DA  - 2018/09
TI  - Fuzzy Identity-Based Threshold Key-Insulated Encryption with Ciphertext Policy
BT  - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018)
PB  - Atlantis Press
SP  - 1184
EP  - 1187
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-18.2018.209
DO  - 10.2991/iceep-18.2018.209
ID  - Chen2018/09
ER  -