Paper 2007/422 Original: eprint.iacr.org/2007/422 ↗
Structural Identity-Based Encryption
Abstract
In this paper, we introduce the concept of structural identity-based encryption (SIBE). Similar to hierarchical identity-based encryption (HIBE), entities in the system are organized into hierarchy. An entity in SIBE can decrypt ciphertext for all its ancestors. It can be seen as an opposite of HIBE, where an entity can decrypt the ciphertext for all its descendants. We formalize the notion and security requirements, propose an efficient construction and show that our construction is secure under appropriate assumptions in the random oracle model.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2007-11-18: last updated
- 2007-11-18: published
- Short URL
- https://ia.cr/2007/422
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2007/422,
author = {Man Ho Au and Siu-Ming Yiu},
title = {Structural Identity-Based Encryption},
howpublished = {Cryptology {ePrint} Archive, Paper 2007/422},
year = {2007},
url = {https://eprint.iacr.org/2007/422}
}