Last Paper of Semester 1

Today, I'm going to take the last test paper for this semester. It's on the internet security subject, basically, CIA or Confidentiality, Integrity and Available, actually, two more, Authentication and Access control.

The cryptography topics are the toughest to understand, the hash, symmetric and asymmetric encryption. Terms like DES, 3DES, AES, ECB, CBC, OFB, and other definitions and concepts that I need to understand.

I just hope that the test is not difficult, because I really can't understand and digest all that I read.