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Cryptography · Advanced
10 questions · Question 1 of 10
10%
Multiple Choice
Expert
Explain why the length of the key does matter?
A
ROT13 (rotate 13) is a specific implementation of the Caesar cipher where the shift is 13 places.
B
Hash Functions provide a mapping between an arbitrary length input, and a (usually) fixed length (or smaller length) output.
C
A salt is a fixed length cryptographically strong random value that is added to the input of hash functions to create unique hashes for every input, regardless of the input not being unique.
D
Consider, for example, the simple encryption of shifting every letter one to the right in the alphabet, so that A becomes B, B becomes C, and so forth.
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