@inproceedings{861f4f0a4aa14a9b93730f719ba56384,
title = "A note on a signature building block and relevant security reduction in the green-hohenberger ot scheme",
abstract = "In Asiacrypt{\textquoteright}08, Green and Hohenberger presented an adaptive oblivious transfer (OT) scheme which makes use of a signature built from the Boneh-Boyen Identity Based Encryption. In this note, we show that the signature scheme is vulnerable to known-message attacks and the reduction used in the proof of Lemma A.6 is flawed. We also remark that the paradigm of “encryption and proof of knowledge” adopted in the OT scheme is unnecessary because the transferred message must be “recognizable” in practice, otherwise the receiver cannot decide which message to retrieve. However, we would like to stress that this work does not break the OT scheme itself.",
keywords = "Encryption and proof of knowledge, Oblivious transfer, Recognizable message, Selective security, Signature",
author = "Zhengjun Cao and Frederic Lafitte and Olivier Markowitch",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2014.; 9th China International Conference on Information Security and Cryptology, Inscrypt 2013 ; Conference date: 27-11-2013 Through 30-11-2013",
year = "2014",
doi = "10.1007/978-3-319-12087-4_18",
language = "English",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer",
pages = "282--288",
editor = "Moti Yung and Dongdai Lin and Shouhuai Xu and Moti Yung",
booktitle = "Information Security and Cryptology - 9th International Conference, Inscrypt 2013, Revised Selected Papers",
}