Question

Suppose we apply the Mix Columns operation to a ∗ Column* vector [0x63,0x62,0x61,0x60] T

(given with bytes in hex). What are the entries of the resulting column (in decimal)?

Answer 1

The question pertains to the Mix Columns operation of the AES algorithm, where a column vector in hexadecimal is given and the resulting column in decimal is requested. Without the full transformation matrix or additional context, the exact resulting column cannot be provided.

Step-by-step explanation:

The student is asking about the Mix Columns operation in the context of the Advanced Encryption Standard (AES) algorithm, which is a topic under the subject of Computers and Technology. Specifically, the operation is applied to a column vector in hexadecimal and the student is seeking the resulting column in decimal format.

The Mix Columns operation is a transformation used in AES encryption that takes four bytes as input and outputs four bytes, where each input byte affects all four output bytes.

In this particular question, the input column vector is [0x63, 0x62, 0x61, 0x60]T. Given the incomplete reference provided, it's difficult to provide the exact calculation without the full Mix Columns transformation matrix.

However, this transformation typically involves multiplying the column vector by a fixed matrix in the field of GF(28) (Galois field), and the result is then converted to decimal format.