When comparing the Advanced Encryption Standard (AES) with the Data Encryption Standard (DES), the function from DES that does not have an equivalent in AES is the "Swapping of halves" (d).

Here's why:

a. Permutation: Both AES and DES use permutation (rearranging bits) as a part of their encryption process.

b. XOR of subkey with function f: Both AES and DES use the XOR operation in their encryption process. In DES, it's used in the Feistel function (function f), and in AES, it's used in the AddRoundKey stage.

c. Function f: This is the Feistel function, which is a part of DES. While AES doesn't have a direct equivalent, it does have a series of transformations that achieve a similar goal of mixing the data.

d. Swapping of halves: This is a part of the DES process, where the left and right halves of the data block are swapped. AES does not have an equivalent function, as it treats the data block as a whole in its transformations.

Question

When comparing the Advanced Encryption Standard (AES) with the Data Encryption Standard (DES), the function from DES that does not have an equivalent in AES is the "Swapping of halves" (d).

Here's why:

a. Permutation: Both AES and DES use permutation (rearranging bits) as a part of their encryption process.

b. XOR of subkey with function f: Both AES and DES use the XOR operation in their encryption process. In DES, it's used in the Feistel function (function f), and in AES, it's used in the AddRoundKey stage.

c. Function f: This is the Feistel function, which is a part of DES. While AES doesn't have a direct equivalent, it does have a series of transformations that achieve a similar goal of mixing the data.

d. Swapping of halves: This is a part of the DES process, where the left and right halves of the data block are swapped. AES does not have an equivalent function, as it treats the data block as a whole in its transformations.

Knowee AI · Accepted Answer

When comparing the Advanced Encryption Standard (AES) with the Data Encryption Standard (DES), the function from DES that does not have an equivalent in AES is the "Swapping of halves" (d).

Here's why:

a. Permutation: Both AES and DES use permutation (rearranging bits) as a part of their encryption process.

b. XOR of subkey with function f: Both AES and DES use the XOR operation in their encryption process. In DES, it's used in the Feistel function (function f), and in AES, it's used in the AddRoundKey stage.

c. Function f: This is the Feistel function, which is a part of DES. While AES doesn't have a direct equivalent, it does have a series of transformations that achieve a similar goal of mixing the data.

d. Swapping of halves: This is a part of the DES process, where the left and right halves of the data block are swapped. AES does not have an equivalent function, as it treats the data block as a whole in its transformations.

When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptographya.Permutation pb.xor of subkey with function f c.f functiond.Swapping of halves

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