Security Contents Security requirements Security Confidentiality

Security Contents

Security requirements

Security Confidentiality

Security Integrity protection

Security Authentication

Security Public key cryptography

Security Diffie-Hellman vs. RSA

Security Symmetric keys vs. private/public keys

Security Key agreement scheme

Security Diffie-Hellman key agreement scheme (1)

Security Diffie-Hellman key agreement scheme (2)

Security Diffie-Hellman key agreement scheme (3)

Security Diffie-Hellman key agreement scheme (4)

Security Diffie-Hellman key agreement scheme (5)

Security Diffie-Hellman key agreement scheme (6)

Security Man-in-the-middle attack vulnerability

Security Man-in-the-middle attack vulnerability

Security Key transport scheme

Security Digital signature (for authentication)

Security RSA vs. DSA

Security Symmetrical encryption (for confidentiality)

Security Message digests (for integrity protection)

Security Certificates

Security Key length

Security Putting it all together

Security SSL (TLS)

Security Basic SSL handshake operation (1)

Security Basic SSL handshake operation (2)

Security Basic SSL handshake operation (3)

Security Virtual Private Network (VPN)

Security Implementing VPN using IPSec

Security Two modes of IPSec

Security IPSec Transport mode

Security IPSec Tunnel mode

Security IPSec Tunnel mode scenario

Security IPSec security features

Security IPSec Security Association (SA)

Security IPSec Security Association (cont. )