کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
425535 685775 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Provably secure robust optimistic fair exchange of distributed signatures
ترجمه فارسی عنوان
به طور قابل ملاحظه ای امن و صحیح تبادل عادلانه امضا توزیع شده است
کلمات کلیدی
تبادل عادلانه خوش بینانه، امضای توزیع شده، به اشتراک گذاری راز برنامه ی مونوونی، تأییدیه امضا رمزگذاری شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
چکیده انگلیسی


• We model optimistic fair exchange between two groups.
• We define security in optimistic fair exchange of distributed signatures (OFEDS).
• OFEDS supports most generic access structure.
• The first OFEDS scheme is presented with robustness and non-interactive properties.
• Our scheme is proven secure under standard assumption.

We introduce the concept of optimistic fair exchange of distributed signatures (OFEDS) which allows two groups of parties to fairly exchange digital signatures. Specifically, an authorized set of parties from each group can jointly take part in the protocol on behalf of the affiliated group to fulfill obligation, and a semi-trusted arbitrator will intervene in the protocol only when there are disputes between two sides. Our OFEDS extends the functionality of optimistic fair exchange of threshold signatures to a more generic case. We formalize the security model of OFEDS, in which besides the standard security requirements for existing optimistic fair exchange protocols, robustness is incorporated so that OFEDS can be successfully performed even when there exist some dishonest signers. We propose a non-interactive construction of OFEDS based on the well-established Computational Diffie–Hellman (CDH) assumption. Our proposal shows that there exists CDH-based OFEDS for any general monotone access structure. Theoretical and experimental analyses demonstrate our OFEDS construction has reasonable efficiency for real applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Future Generation Computer Systems - Volume 62, September 2016, Pages 29–39
نویسندگان
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