Every chapter of the CS 5473 notes: operating system and application security, buffer overflows, VPNs, database security and privacy, secret sharing, and wireless network security.
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A review of the OSI layers, classical and modern ciphers, block modes, hashing, signatures, key exchange, SSL, the four models for judging security, and BB84 quantum key distribution.
47 total questions
Card #1
What is a cryptosystem, formally?
Card #2
Unconditional security
Card #3
How is perfect secrecy stated in terms of uncertainty?
1. The notes' permutation cipher key sends position 1→4, 2→3, 3→1, 4→6, 5→2, 6→5 (the letter in position i moves to position π(i)). What is the ciphertext of the first plaintext block 'hewalk'?
2. In the notes' BB84 example Alice sends the bits 011010010101, and her basis matches Bob's at positions 1, 3, 4, 6, 9 and 10. Which shared key do they keep?
3. A mode of operation is defined by y0 = IV and yi = eK(yi-1 oplus xi). Which mode is this?
1. TCP/IP, UDP and DNS are listed under the OSI ___ layer.
Hint: Layer 4
2. FTP, SMTP, SNMP and HTTP are protocols of the OSI ___ layer.
Hint: Layer 7
3. The OSI ___ layer is a small layer responsible for session management tasks and dialogue control.
Hint: Layer 5
