Exam 1

Start: Thursday - October 18, 8 AM

Ends: Saturday - October 21, 3 PM.

Late fee of $5 starting on Friday at 4 PM.

Check Testing Center info for late fees, hours, etc. You are responsible to be sure to take the test.

Location: Testing Center

Closed book, No notes. No Calculator.

Study the lecture slides available on the website, and other readings

Symmetric Encryption

• AES – how to implement the finite field add/multiply
• Be able to multiply two numbers using Finite Field multiply - class example was to multiply 0x21 * 0x0C
• Modes of execution – how they work, why we have them, pros and cons
  • I will give you pictures of how the modes work - don't memorize them
• Padding – when and why

One-way hash function

• 6 security properties
• Pre-image attack vs. collision attack
• I will give you SHA-1 diagram, understand how it works from the diagram

Message authentication code

• Definition - abstract idea of a MAC, 3 ways to implement
• Terminology and various meanings - MAC, HMAC
• How the message extension attack works
• Design of HMAC specification to thwart extension attack

Public key cryptography

• Encryption vs. digital signatures
• Diffie Hellman and RSA
• Generating RSA parameters using the extended Euclidean algorithm
• Why DH and RSA are secure
• What is the public key and private key in RSA?
• How do we use RSA to encrypt and sign application data?

Digital certificates

• Five steps a relying party uses to verify a certificate
• Certificate chains
• How to repair a certificate hierarchy when a key is compromised

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