Friday, August 28, 2015

Cryptography & Computer Security Intro

I recently started taking a course (CS 265 Cryptography & Computer Security) at SJSU as part of my part time masters. I intend to summarise what I learn each class at this tech blog.

Class 1:
1. CIA
    Confidentiality - unauthorized access to data
    Integrity - unauthorized data changes
    Availability - as the name suggests (Denial of Service or DoS attacks)

2. Cryptography - authorization on a stand alone system
    Cryptanalysis - breaking of secure systems
    Access control - includes authentication and authorization
    Protocols - authorization over a network
    Software - buggy, complex => security concerns

3. ATM - Automatic Teller Machines

4. Two factor authentication => requires 2 out the 3 authentication methods

5. 3 authentication methods & examples:
     what you know - passwords
     what you have - smart cards
     what you are - biometric authentication

6. war dialing - dialing many numbers serially to contact someone or to verify if your number exists
   


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