We propose a model for fair electronic cash issued by multiple banks for the first time. A scheme of electronic cash with multiple banks in which a user can be traced is presented by using the improved group signature scheme of Cam97[4] and the group blind signature scheme of Lys98[16]. A weakness in the design of withdrawal and payment protocols of electronic cash using the existing group sign...

Please note that organizational endorsement and approval is not required before the deadline because of the way the electronic system obtains the endorsement. Organizational endorsement is obtained in the following way: an e-mail with a secured link to your proposal will be sent to the e-mail address that you provided for your SPO officer. The secured link will allow your SPO officer to view yo...

One important requirement of electronic cash systems is the anonymity of customers. Unconditional anonymity is also very well suited to support criminals in blackmailing. Maitland and Boyd proposed at ICICS 2001 an offline electronic cash system based on a group signature scheme. Their scheme cannot be used to solve blackmailing and other anonymity problems such as money laundering and illegal ...

BACKGROUND AND AIM: The aim of this study was to systematically analyze the effect of levamisole on treatment of recurrent aphthous stomatitis (RAS).METHODS: An electronic search was executed in PubMed, Cochrane, and Scopus after determining the research question using the appropriate Medical Subject Heading (MeSH) term covering the period from 1975 to 2015. Additional publications from hand se...

INTRODUCTION The purpose of this article is to examine the feasibility of digital signature technology to guarantee the legal validation of electronic dental records. METHODS The possible uses of digital signature technology, the actual use of digital signature technology to authenticate electronic dental records, the authentication of each part of the electronic dental record, the general le...

In this paper, a proxy blind signature scheme based on bilinear pairing is proposed. The proposed proxy blind signature is existential unforgeable under adaptively chosen warrant attacks and chosen message attacks upon the CDH assumptions and DBDH assumptions in the Random Oracle Model. In order to make all levels of banks issue electronic coin, the proxy blind signature scheme is applied to co...

This article discusses the process of online collection signatures for legislative proposals, taking as a starting point current popular initiative in California. It describes how signature petitions would work, well security issues and other objections to via internet could be addressed and, finally, pros cons applying this method collecting initiatives.

The advent of electronic voting gives rise to a new threat: Adversaries may execute undetectable, automated attacks against the system. Elections are often secured through complex policies, which may be difficult to enforce; Completely Automated Public Turing Tests to Tell Computers and Humans Apart (CAPTCHAs) provide an inexpensive alternative. The goal of this study is to introduce a unique a...