Introduction

• Public Key Infrastructure

  • Infrastructure built on public-key cryptography
  • Especially X.509-based infrastructures
  • “Digital certificates”, “Electronic signatures”, CAs

• Digital Identity, Network Identity

  • XML-based, Internet “security” infrastructure
  • Mostly LDAP-based “Unified User Management”

• Simplified Sign-On (Single Sign-On)

  • Authentication infrastructure
  • Kerberos, Passport, Liberty (Phase I), ...