Which algorithm is NOT part of the SHA family?

Which algorithm is NOT part of the SHA family?

• A. MD5
• B. SHA-1
• C. SHA-256
• D. SHA-3

Answer: (A)

MD5 is not part of the SHA family. It was designed as a successor to the MD4 family and produces 128-bit hashes, but it’s not included in the SHA line. MD5 has well-known weaknesses (collisions and preimage issues) and is considered insecure for modern use. The other options—SHA-1, SHA-256, and SHA-3—are all members of the SHA family: SHA-1 is the original SHA standard, SHA-256 is part of the SHA-2 family, and SHA-3 is a later standard that uses a different underlying design (Keccak) but is still categorized within the SHA family. So the algorithm not belonging to SHA is MD5.

MD5 is not part of the SHA family. It was designed as a successor to the MD4 family and produces 128-bit hashes, but it’s not included in the SHA line. MD5 has well-known weaknesses (collisions and preimage issues) and is considered insecure for modern use. The other options—SHA-1, SHA-256, and SHA-3—are all members of the SHA family: SHA-1 is the original SHA standard, SHA-256 is part of the SHA-2 family, and SHA-3 is a later standard that uses a different underlying design (Keccak) but is still categorized within the SHA family. So the algorithm not belonging to SHA is MD5.