GSLC · Question #317
Which of the following is a method of defeating a cryptographic scheme by trying a large number of possibilities?
The correct answer is A. Brute force. A brute force attack defeats cryptographic schemes by systematically trying every possible key or password combination until the correct one is found.
Question
Which of the following is a method of defeating a cryptographic scheme by trying a large number of possibilities?
Options
- ABrute force
- BZero-day
- CFMS
- DIP spoofing
How the community answered
(29 responses)- A93% (27)
- C3% (1)
- D3% (1)
Why each option
A brute force attack defeats cryptographic schemes by systematically trying every possible key or password combination until the correct one is found.
Brute force is the method of exhaustively attempting all possible combinations - keys, passwords, or inputs - to break a cryptographic scheme. It requires no knowledge of the algorithm's weaknesses and relies purely on computational power and time. Given enough resources, brute force can theoretically defeat any cipher.
A zero-day is an unpatched software vulnerability, not a method of attacking cryptographic schemes through enumeration.
FMS (Fluhrer, Mantin, Shamir) is a specific analytical attack targeting weak IVs in RC4, not a general exhaustive-search method.
IP spoofing is a network-layer technique to forge source addresses and does not involve defeating cryptographic algorithms.
Concept tested: Brute force cryptographic attack method
Source: https://csrc.nist.gov/glossary/term/brute_force_attack
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