[Resource Topic] 2006/085: Anonymous Hierarchical Identity-Based Encryption (Without Random Oracles)

Welcome to the resource topic for 2006/085

Anonymous Hierarchical Identity-Based Encryption (Without Random Oracles)

Authors: Xavier Boyen, Brent Waters


We present an identity-based cryptosystem that features fully anonymous ciphertexts and hierarchical key delegation. We give a proof of security in the standard model, based on the mild Decision Linear complexity assumption in bilinear groups. The system is efficient and practical, with small ciphertexts of size linear in the depth of the hierarchy. Applications include search on encrypted data, fully private communication, etc.

Our results resolve two open problems pertaining to anonymous identity-based encryption, our scheme being the first to offer provable anonymity in the standard model, in addition to being the first to realize fully anonymous HIBE at all levels in the hierarchy.

ePrint: https://eprint.iacr.org/2006/085

See all topics related to this paper.

Feel free to post resources that are related to this paper below.

Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.

For more information, see the rules for Resource Topics .