Digital Signature

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Marmara University Engineering Faculty

Computer Science and Engineering

Final Thesis

CSE 497

Authentication with Digital Signatures

Umut Tozlu

120040364

Advisor: Prof. Dr. Fuat İnce 09.01.2009

Abstract

Ilkimza.com is planned to be a real time web application project that will be an efficient area for authentication with digital signatures. This idea, digital signature is very popular and good idea to use in authentication because of its advantageous that come with its security and reliability and the applicability in digital systems.

Since security is an important criterion for authentication, of course there are some other important properties that an authentication process should include. Reliability is one of them. If people will authenticate themselves, they should trust the applications that are used for signing and verifying operations. Providing a reliable area for authentication is the hardest part of the project. Actually this part directed the project. Another important criterion for the project is; reducing time and costs. This property comes with digital signatures itself.

So with this project we created a helpful, ease of use, secure and reliable are for authentication and to provide all these attributes, a lot of researches were done and used a lot of libraries. These libraries made project to have legal currency too.

This project includes key management, signing operations and verifying operations. These three parts were shared to use or control by users, system and the authority. Users can create their own key pairs and signs with the given packages, system controls all the steps, authority is responsible for controlling all the certificates in the application.

Thesis includes all detailed information for ilkimza.com project that were finalized after eight months of work.

Table of Contents

1. INTRODUCTION …………....: 3

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