In KYV-5, which letter stands for Keying, permuting?

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Multiple Choice

In KYV-5, which letter stands for Keying, permuting?

Explanation:
Keying and the initial permutation refer to the setup step where the key material is entered and the first transformation is applied to the keystream. In KYV-5, the letter assigned to that stage is K, because that symbol denotes the Keying, permuting step. So this is the best fit for describing the keying and permutation action. The other letters correspond to other stages and do not indicate the keying/permuting action.

Keying and the initial permutation refer to the setup step where the key material is entered and the first transformation is applied to the keystream. In KYV-5, the letter assigned to that stage is K, because that symbol denotes the Keying, permuting step. So this is the best fit for describing the keying and permutation action. The other letters correspond to other stages and do not indicate the keying/permuting action.

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