@inproceedings{2e83e5072dde4d2cb85fc367ca4713d1,
title = "(Hierarchical) identity-based encryption from affine message authentication",
abstract = "We provide a generic transformation from any affine message authentication code (MAC) to an identity-based encryption (IBE) scheme over pairing groups of prime order. If the MAC satisfies a security notion related to unforgeability against chosen-message attacks and, for example, the k-Linear assumption holds, then the resulting IBE scheme is adaptively secure. Our security reduction is tightness preserving, i.e., if the MAC has a tight security reduction so has the IBE scheme. Furthermore, the transformation also extends to hierarchical identity-based encryption (HIBE). We also show how to construct affine MACs with a tight security reduction to standard assumptions. This, among other things, provides the first tightly secure HIBE in the standard model.",
keywords = "HIBE, IBE, standard model, tight reduction",
author = "Olivier Blazy and Eike Kiltz and Jiaxin Pan",
year = "2014",
month = jan,
day = "1",
doi = "10.1007/978-3-662-44371-2\_23",
language = "English",
isbn = "9783662443705",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
number = "PART 1",
pages = "408--425",
booktitle = "Advances in Cryptology, CRYPTO 2014 - 34th Annual Cryptology Conference, Proceedings",
edition = "PART 1",
note = "34rd Annual International Cryptology Conference, CRYPTO 2014 ; Conference date: 17-08-2014 Through 21-08-2014",
}