コマノ　ユウイチ   駒野　雄一    所属   千葉工業大学  情報変革科学部 高度応用情報科学科    千葉工業大学  情報科学研究科 情報科学専攻    職種   教授
言語種別	英語
発行・発表の年月	2006/05
形態種別	学術雑誌
査読	査読あり
標題	Taxonomical security consideration of OAEP variants
執筆形態	共著
掲載誌名	IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
掲載区分	国外
出版社・発行元	IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
巻・号・頁	E89A(5),pp.1233-1245
著者・共著者	Yuichi Komano,Kazuo Ohta
概要	We first model the variants of OAEP and SAEP by changing a construction and position of a redundancy, and establish a universal proof technique in the random oracle model, the comprehensive event dividing tree. We then make a taxonomical security consideration of the variants of OAEP and SAEP, based on the assumptions of one-wayness and partial-domain one-wayness of the encryption permutation, by applying the tree. Furthermore. we demonstrate the concrete attack procedures against all insecure schemes: we insist that the security proof failure leads to some attacks. From the security consideration, we find that one of the variants leads to a scheme without the redundancy; the scheme is not PA (plaintext aware) but IND-CCA2 secure. Finally, we conclude that some of them are practical in terms of security tightness and short bandwidth.
DOI	10.1093/ietfec/e89-a.5.1233
ISSN	0916-8508/1745-1337
PermalinkURL	http://dblp.uni-trier.de/db/journals/ieicet/ieicet89a.html#journals/ieicet/KomanoO06