کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
472928 698758 2011 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Provably secure server-aided verification signatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
پیش نمایش صفحه اول مقاله
Provably secure server-aided verification signatures
چکیده انگلیسی

A server-aided verification signature scheme consists of a digital signature scheme and a server-aided verification protocol. With the server-aided verification protocol, some computational tasks for a signature verification are carried out by a server, which is generally untrusted; therefore, it is very useful for low-power computational devices. In this paper, we first define three security notions for server-aided verification signatures, i.e., existential unforgeability, security against collusion attacks and security against strong collusion attacks. The definition of existential unforgeability includes the existing security requirements in server-aided verification signatures. We then present, on the basis of existing signature schemes, two novel existentially unforgeable server-aided verification signature schemes. The existential unforgeability of our schemes can be formally proved both without the random oracle model and using the random oracle model. We also consider the security of server-aided verification signatures under collusion attacks and strong collusion attacks. For the first time, we formally define security models for capturing (strong) collusion attacks, and propose concrete server-aided verification signature schemes that are secure against such attacks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Mathematics with Applications - Volume 61, Issue 7, April 2011, Pages 1705–1723
نویسندگان
, , , ,