Which hashing technology requires keys to be exchanged?Question 23Select one:saltingMD5AESHMAC
Question
Which hashing technology requires keys to be exchanged?
Question 23
Select one:
- salting
- MD5
- AES
- HMAC
Solution
The hashing technology that requires keys to be exchanged is HMAC (Hash-Based Message Authentication Code).
Explanation:
- Salting - Adds random data to passwords before hashing to prevent attacks but does not require key exchange.
- MD5 - A hashing algorithm that produces a fixed-size hash. It does not involve key exchange.
- AES - A symmetric encryption algorithm that requires keys, but it's not a hashing technology.
- HMAC - Specifically designed to use a secret key in conjunction with a hash function to provide integrity and authenticity. This means the key must be agreed upon and exchanged between parties.
Final Answer
HMAC requires keys to be exchanged.
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