Which of the following algorithms has well documented collisions? (Select TWO).

The correct answer is B. MD5 C. SHA. A hash collision occurs when two different inputs produce the same hash output, which undermines the integrity guarantees of the algorithm. MD5 has been broken since the 1990s and has well-documented, practical collision attacks-it is no longer considered cryptographically…

General security concepts

Question

Options

AAES
BMD5
CSHA
DSHA-256
ERSA

How the community answered

(43 responses)

B
95% (41)
D
2% (1)
E
2% (1)

Explanation

A hash collision occurs when two different inputs produce the same hash output, which undermines the integrity guarantees of the algorithm. MD5 has been broken since the 1990s and has well-documented, practical collision attacks-it is no longer considered cryptographically secure. SHA (referring to SHA-1) was shown to have theoretical collision vulnerabilities in 2005, and Google demonstrated a practical SHA-1 collision (SHAttered) in 2017. SHA-256 is part of the SHA-2 family and has no known practical collisions, making it still secure. AES is a symmetric encryption algorithm, not a hash function, so 'collision' does not apply. RSA is an asymmetric encryption/signing algorithm, also not a hash function.

Topics

#hash collisions#MD5#SHA#cryptographic hash functions

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