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SY0-501 · Question #203

Which of the following cryptography algorithms will produce a fixed-length, irreversible output?

The correct answer is D. MD5. MD5 is a cryptographic hash function that produces a fixed-length, irreversible output, unlike the other options which are encryption algorithms.

Submitted by the_admin· Mar 4, 2026General security concepts

Question

Which of the following cryptography algorithms will produce a fixed-length, irreversible output?

Options

  • AAES
  • B3DES
  • CRSA
  • DMD5

How the community answered

(53 responses)
  • A
    9% (5)
  • B
    15% (8)
  • C
    4% (2)
  • D
    72% (38)

Why each option

MD5 is a cryptographic hash function that produces a fixed-length, irreversible output, unlike the other options which are encryption algorithms.

AAES

AES (Advanced Encryption Standard) is a symmetric-key block cipher used for encryption and decryption, meaning its output is reversible given the correct key.

B3DES

3DES (Triple Data Encryption Standard) is a symmetric-key block cipher that performs encryption and decryption, making its output reversible with the proper key.

CRSA

RSA is an asymmetric-key encryption algorithm designed for both encryption/decryption and digital signatures, thus its output is reversible with the corresponding private key.

DMD5Correct

MD5 (Message-Digest Algorithm 5) is a cryptographic hash function designed to generate a fixed-length message digest (128 bits for MD5) from any input data. This process is computationally irreversible, meaning it is infeasible to reconstruct the original input data from its hash value.

Concept tested: Characteristics of cryptographic hash functions

Source: https://learn.microsoft.com/en-us/azure/security/fundamentals/encryption-overview#cryptographic-hashes

Topics

#hashing#MD5#one-way function#cryptographic algorithms

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