MD5 outputs a 128-bit digest.

MD5 outputs a 128-bit digest.

• A. 128-bit
• B. 160-bit
• C. 256-bit
• D. 512-bit

Answer: (A)

MD5 outputs a fixed-length digest of 128 bits. This means no matter how large or small the input, the hash result from MD5 is always 128 bits in size, commonly shown as 32 hexadecimal characters since each hex digit represents 4 bits. That fixed size is what makes the statement true. The other bit lengths belong to different hash families: 160-bit is typical of SHA-1, 256-bit corresponds to SHA-256, and 512-bit to SHA-512. Keep in mind that while the 128-bit size is the official output length, MD5 is no longer recommended for cryptographic security because vulnerabilities like collisions have been demonstrated.

MD5 outputs a fixed-length digest of 128 bits. This means no matter how large or small the input, the hash result from MD5 is always 128 bits in size, commonly shown as 32 hexadecimal characters since each hex digit represents 4 bits. That fixed size is what makes the statement true. The other bit lengths belong to different hash families: 160-bit is typical of SHA-1, 256-bit corresponds to SHA-256, and 512-bit to SHA-512. Keep in mind that while the 128-bit size is the official output length, MD5 is no longer recommended for cryptographic security because vulnerabilities like collisions have been demonstrated.