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Ahlen is using a set of pre-calculated hashes to attempt to derive the passwords from a Windows SAM file. What is a set of pre-calculated hashes used to derive a hashed password called?

A.
Hash matrix
Answers
A.
Hash matrix
B.
Rainbow table
Answers
B.
Rainbow table
C.
Password table
Answers
C.
Password table
D.
Hash table
Answers
D.
Hash table
Suggested answer: B

Explanation:

Rainbow table

https://en.wikipedia.org/wiki/Rainbow_table

A rainbow table is a precomputed table for caching the output of cryptographic hash functions, usually for cracking password hashes. Tables are usually used in recovering a key derivation function (or credit card numbers, etc.) up to a certain length consisting of a limited set of characters. It is a practical example of a space--time tradeoff, using less computer processing time and more storage than a brute-force attack which calculates a hash on every attempt, but more processing time and less storage than a simple key derivation function with one entry per hash. Use of a key derivation that employs a salt makes this attack infeasible.

asked 18/09/2024
Maurizio Budicin
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