کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
427252 686477 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identity-based proxy re-signatures from lattices
ترجمه فارسی عنوان
مجددا امضاء پروکسی مبتنی بر هویت از شبکه ها
کلمات کلیدی
رمزنگاری، مجددا امضای پروکسی، مشبک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
چکیده انگلیسی


• This paper presents the first identity-based proxy re-signature scheme from lattices.
• Its security is proven in the random oracle model under the small integer solution assumption.
• It would be still secure even in the quantum age with respect to others.

Proxy re-signature is an important cryptographic primitive in which a semi-trusted proxy is able to transform a delegatee's signature on some message into a delegator's signature on the same message, while the proxy itself cannot generate any signatures for either the delegatee or the delegator. The existing proxy re-signature schemes in the literature all rely on the hardness assumptions that can be easily solved by quantum algorithms. In this paper we present an identity-based proxy re-signature scheme from lattice assumptions. The scheme supports multi-use bidirectional conversion, and is provably secure in the random oracle model under conventional small integer solution assumption that is as hard as approximating several standard lattice problems. As the underlying lattice problems are intractable even for quantum computers, our scheme would work well in the quantum age.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Information Processing Letters - Volume 115, Issue 4, April 2015, Pages 462–467
نویسندگان
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