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Title:
A Secure and Efficient Remote User Authentication Scheme
Advisor:
Co-Advisor:
Info:
September 2005 -- January 2007,
Sharif Network Security Center (),
,
Abstract:
Many remote authentication schemes have been proposed recently,
each of which satisfies only some of the essential requirements including
mutual authentication, user anonymity, and key agreement with forward secrecy.
In this thesis, we first illustrate two security attacks against
existing authentication schemes and present the enhanced schemes.
Then, we propose a new symmetric cryptography based authentication and
key agreement scheme using smart-cards, that efficiently fulfills all
the essential requirements. In our scheme, anonymous tickets are used to
provide user anonymity, and one-way nature of hash functions
makes the established session keys forward-secure. Finally, we introduce
an Improved User Identity Confidentiality (IUIC) mechanism which attempts
to avoid the drawback of UMTS authentication and key agreement
procedure in provision of user anonymity.
Keywords:
smart-card-based remote authentication, user anonymity, forward secrecy, UMTS
Download:
, in persian
Title:
Implementation of a Secure Certificate-Based Election
Advisor:
Co-Advisor:
Info:
August 2004 -- January 2005,
Sharif Network Security Center (),
,
Abstract:
An electronic voting (e-voting) system enables voters to perform
voting over computer networks. It can be realized in a way that is
more convenient, faster and cheaper than a conventional voting.
The main goal of this thesis is design and implementation of a secure e-voting
system, which utilizes digital certificates to register users, and RSA encryption to
perform election. Our scheme involves three phases; registration phase, voting phases, and
ticket counting phase. We make use of UML to design the system,
and Microsoft Visual C++ .Net to implement it.
Keywords:
secure e-voting, digital certificate, public-key encryption
Download:
, in persian,
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