1 | ITU X.509 - digital certificate (like identity card authorized by Certificate Authority (CA)) |
2 | SSL - Secure Socket Layer |
3 | PAP - Password Authentication Protocol |
4 | CHAP- Challenge Handshake Authentication Protocol |
5 | TACACS - Terminal Access Controller Access-Control System |
6 | RADIUS - Remote Authentication Dial-In User Service |
7 | PKCS - Public Key Cryptography Standards |
8 | PGP - Pretty Good Privacy |
9 | S/MIME - Secure Multipurpose Internet Mail Extension |
10 | PEM - Privacy Enhanced Mail |