Question
Security is the name of the game for modern computer systems. Answer the following about securing systems with cryptography, for 10 points each.
[10e] In cryptography, encryption transforms plaintext into “text” described by this word. This general word for methods of encryption names versions like the substitution, Playfair, and Atbash.
ANSWER: cipher [or cypher; accept ciphertext; accept substitution cipher; accept Playfair cipher; accept Atbash cipher]
[10h] This algorithm and its derivatives are the most common symmetric-key encryption algorithms. It has been approved by the NSA for protecting top-secret information, and newer x86 processors have dedicated instructions for performing parts of this algorithm.
ANSWER: Advanced Encryption Standard [accept AES; accept Rijndael (“rain-dahl”)]
[10m] These objects are used by applications like web browsers and Secure Boot firmware to establish chains of trust using asymmetric-key cryptography. They consist centrally of a public key that has been signed by a trusted private key.
ANSWER: certificates
<RA, Other Science: Computer Science>
Summary
| 2023 ARCADIA at Duke | Emory, Duke, Yale | Y | 4 | 5.00 | 50% | 0% | 0% |
| 2023 ARCADIA at Emory | Emory, Duke, Yale | Y | 3 | 10.00 | 67% | 33% | 0% |
| 2023 ARCADIA at Maryland | Maryland, Online | Y | 4 | 10.00 | 50% | 50% | 0% |
| 2023 ARCADIA at Ohio State | Ohio State, Texas | Y | 3 | 6.67 | 33% | 33% | 0% |
| 2023 ARCADIA Online | Maryland, Online | Y | 2 | 5.00 | 50% | 0% | 0% |
| 2023 ARCADIA at Texas | Ohio State, Texas | Y | 3 | 6.67 | 67% | 0% | 0% |
Data
| Johns Hopkins | George Washington A | 0 | 0 | 10 | 10 |
| George Washington B | Georgetown | 10 | 0 | 0 | 10 |
| Georgetown | George Washington A | 0 | 0 | 10 | 10 |
| Maryland A | Maryland B | 10 | 0 | 0 | 10 |