Rijndael MixColumns
id:
rijndael-mixcolumns-321-17698773
title:
Rijndael MixColumns
text:
The MixColumns operation performed by the Rijndael cipher or Advanced Encryption Standard is, along with the ShiftRows step, its primary source of diffusion. Each column of bytes is treated as a four-term polynomial b = b 3 x 3 + b 2 x 2 + b 1 x + b 0 , each byte representing an element in the Galois field GF . The coefficients are elements within the prime sub-field GF . Each column is multiplied with the fixed polynomial a = 3 x 3 + x 2 + x + 2 modulo x 4 + 1 ; the inverse function is a −
brand slug:
wiki
category slug:
encyclopedia
description:
Cryptographic operation in the Rijndael encryption algorithm
original url:
https://en.wikipedia.org/wiki/Rijndael_MixColumns
date created:
date modified:
2024-02-06T16:27:16Z
main entity:
{"identifier":"Q2152944","url":"https://www.wikidata.org/entity/Q2152944"}
image:
fields total:
13
integrity:
14