@inproceedings{763dcfdc08b7402ba856244aeed67abf,
title = "Improved Inner-Product Encryption with Adaptive Security and Full Attribute-Hiding",
abstract = "In this work, we propose two IPE schemes achieving both adaptive security and full attribute-hiding in the prime-order bilinear group, which improve upon the unique existing result satisfying both features from Okamoto and Takashima [Eurocrypt {\textquoteright}12] in terms of efficiency. Our first IPE scheme is based on the standard assumption and has shorter master public key and shorter secret keys than Okamoto and Takashima{\textquoteright}s IPE under weaker assumption.Our second IPE scheme is adapted from the first one; the security is based on the assumption (as Okamoto and Takashima{\textquoteright}s IPE) but now it also enjoys shorter ciphertexts. Technically, instead of starting from composite-order IPE and applying existing transformation, we start from an IPE scheme in a very restricted setting but already in the prime-order group, and then gradually upgrade it to our full-fledged IPE scheme. This method allows us to integrate Chen et al.{\textquoteright}s framework [Eurocrypt {\textquoteright}15] with recent new techniques [TCC {\textquoteright}17, Eurocrypt {\textquoteright}18] in an optimized way.",
author = "Jie Chen and Junqing Gong and Hoeteck Wee",
note = "Publisher Copyright: {\textcopyright} 2018, International Association for Cryptologic Research.; 24th Annual International Conference on Theory and Application of Cryptology and Information Security, ASIACRYPT 2018 ; Conference date: 02-12-2018 Through 06-12-2018",
year = "2018",
doi = "10.1007/978-3-030-03329-3\_23",
language = "英语",
isbn = "9783030033286",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "673--702",
editor = "Thomas Peyrin and Steven Galbraith",
booktitle = "Advances in Cryptology {\textendash} ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings",
address = "德国",
}