E-Commerce Public Key Infrastructure Prepared By: Imran Patel Preston University Table of Contents 1 Introduction 2 2 Electronic Security: Key Concepts 2 3 Common Security Risks 3 4 Common Safeguards 3 5 Cryptography 4 6 "Key"-based encryption 4 7 Digital Signatures 4 8 Digital Certificates for Authentication 5 9 Overview of Digital Certificates 5 9.1 Digital ID Usage 6 9.2 Subject Authentication 6 9.3 The X.509 Certificate Format 6 10 Certificate Distribution 7 11 Maintaining Control of Certificate Management 7 12 Authentication Protocols 7 13 Passwords and PINs 7 14 Internet Messaging Security 8 14.1 MIME and S/MIME 8 14.2 Secure Sockets Layer (SSL) 8 14.3 Secure HTTP (S-HTTP) 9 15 Electronic Commerce Application …showed first 75 words of 3243 total…

…showed last 75 words of 3243 total…digital certificates--it is now possible to absolutely, positively verify the source and recipient of electronic information while also maintaining privacy and confidentiality. As a result, companies can now create secure intranet and extranet applications, secure business-to-business services such as EDI, secure departmental applications such as MRP and ERP, and secure email systems. These capabilities in turn translate to new sources of revenue, higher employee productivity, and the ability to create competitive advantages in the marketplace.