Which of the following encryption algorithms is based on the Fiestal structure?
2013
Which of the following encryption algorithms is based on the Fiestal structure?
Answer: C. Data Encryption Standard — The Data Encryption Standard (DES) is a symmetric block cipher that explicitly utilizes the Feistel network structure for its encryption rounds. In contrast,…
- A.
Advanced Encryption Standard
- B.
RSA public key cryptographic algorithm
- C.
Data Encryption Standard
- D.
RC4
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Correct answer: C
The Data Encryption Standard (DES) is a symmetric block cipher that explicitly utilizes the Feistel network structure for its encryption rounds. In contrast, AES employs a Substitution-Permutation Network rather than Feistel. Since RSA is asymmetric and RC4 is a stream cipher, neither fits the description of a Feistel-based block cipher.