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Paper 2007/422

Structural Identity-Based Encryption

Man Ho Au and Siu-Ming Yiu

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
Published elsewhere. Unknown where it was published
Keywords
HIBESIBE
Contact author(s)
mhaa456 @ uow edu au
History
2007-11-18: received
Short URL
https://ia.cr/2007/422
License
Creative Commons Attribution
CC BY
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