Which of the following is NOT a symmetric key algorithm?

The correct answer is B. Digital Signature Standard (DSS). DSS (Digital Signature Standard), specified in FIPS 186, is an asymmetric algorithm based on the discrete logarithm problem and is used exclusively for digital signatures - not for encryption. Blowfish (A), Triple DES/3DES (C), and RC5 (D) are all symmetric block ciphers that…

Submitted by paula_co· Apr 18, 2026Cryptography

Question

Which of the following is NOT a symmetric key algorithm?

Options

ABlowfish
BDigital Signature Standard (DSS)
CTriple DES (3DES)
DRC5

How the community answered

(38 responses)

A
5% (2)
B
87% (33)
C
3% (1)
D
5% (2)

Explanation

DSS (Digital Signature Standard), specified in FIPS 186, is an asymmetric algorithm based on the discrete logarithm problem and is used exclusively for digital signatures - not for encryption. Blowfish (A), Triple DES/3DES (C), and RC5 (D) are all symmetric block ciphers that use the same key for both encryption and decryption.

Topics

#Symmetric Key Algorithms#Asymmetric Key Algorithms#Digital Signatures#Cryptographic Algorithms

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