itarticle [intro. to computer security course note] ch 22 Secure E-mail DomainKeys Identified Mail (DKIM) Secure Sockets Layer (SSL) and Transport Layer Security (TLS) HTTPS (HTTP over SSL/TLS) IPv4 and IPv6 Security 0
![[intro. to computer security course note] ch 22 Secure E-mail DomainKeys Identified Mail (DKIM) Secure Sockets Layer (SSL) and Transport Layer Security (TLS) HTTPS (HTTP over SSL/TLS) IPv4 and IPv6 Security](https://www.dazhuanlan.com/webchat.jpg)