Studying computer network security for Public Service Commission, Nepal?

[networkloser]

Network Security: Types of Computer Security, Types of Security Attacks, Principles of cryptography, RSA Algorithm, Digital Signatures, securing e-mail (PGP), Securing TCP connections (SSL), Network layer security (IPsec, VPN), Securing wireless LANs (WEP), Firewalls


This is the part of 20 subject syllabus for exam. It's subjective exam meaning answers are written instead of tick marks.


I am starting to learn this. What should I be learning in digital signatures? That benefit me in the long run as well as help me in exam? What about PGP? What practical scenarios can I implement on my own? Or is it left untouched because there're APIs that handle it for me these days? I'd love your insights on any of the topics.

[deanwebb]

That's a subject list that reads more like a history of the topic. For example, PGP was popular some time ago, but has since waned as major email providers have implemented encryption.

The biggest area to know is how public-key infrastructure (PKI) cryptography works, and how it is different from symmetric cryptography.