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Modern symmetric ciphers all make use of one or more s-boxes. Both Feistel and non-Feistel ciphers use these s-boxes .
What is an s-box?
- A . A substitution box where input bits are replaced
B. A black box for the algorithm implementation
C. A shifting box where input bits are shifted
D. Another name for the round function
Suggested Answer: A
Explanation:
Substitution box where input bits are replaced https://en.wikipedia.org/wiki/S-box
In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the ciphertext ― Shannon's property of confusion.
Explanation:
Substitution box where input bits are replaced https://en.wikipedia.org/wiki/S-box
In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the ciphertext ― Shannon's property of confusion.
Posted : 13/01/2023 7:48 pm