SSCP Question #1139: Real Exam Question with Answer & Explanation

Question

A one way hash converts a string of random length into a _______________ encrypted string.

Options

• A192 bit
• Bfixed length
• Crandom length
• D56 bit
• ESHA
• FMD5

Explanation

A one-way hash function converts any input string into an output that consistently has a fixed length.

Common mistakes.

• A. 192 bit refers to a specific output length or key size for certain algorithms, not a general characteristic of all hash outputs.
• C. Hash functions explicitly do not produce random length outputs; their fixed-length output is a core property.
• D. 56 bit refers to a specific key size for algorithms like DES, not a general property of hash function output lengths.
• E. SHA (Secure Hash Algorithm) is a family of hashing algorithms, not a descriptor of the output length characteristic itself.
• F. MD5 (Message-Digest Algorithm 5) is a specific hashing algorithm, not a description of the general property of fixed-length output.

Concept tested. Properties of hash functions

Reference. https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.hashalgorithm

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