Which hash function has a 256-bit output according to the material?

Prepare for the Network Security (NETSEC) 3 Test with flashcards and multiple choice questions. Each question offers hints and explanations. Get exam-ready efficiently!

Multiple Choice

Which hash function has a 256-bit output according to the material?

Explanation:
Hash function output length is fixed and often reflected in the name. The digest size increases with security strength, so MD5 gives 128-bit hashes, SHA-1 gives 160-bit hashes, SHA-256 gives 256-bit hashes, and SHA-512 gives 512-bit hashes. Therefore, the one with a 256-bit output is SHA-256. This longer digest provides stronger resistance against collisions and preimage attacks compared to the shorter hashes, which is why it’s commonly used in modern security systems.

Hash function output length is fixed and often reflected in the name. The digest size increases with security strength, so MD5 gives 128-bit hashes, SHA-1 gives 160-bit hashes, SHA-256 gives 256-bit hashes, and SHA-512 gives 512-bit hashes. Therefore, the one with a 256-bit output is SHA-256. This longer digest provides stronger resistance against collisions and preimage attacks compared to the shorter hashes, which is why it’s commonly used in modern security systems.

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