Fortification of AES with Dynamic Mix-Column Transformation

MDS Matrix has an important role in the design of Rijndael Cipher and is the most expensive component of the cipher. It is also used as a perfect diffusion primitive in some other block ciphers. In this paper, we propose a replacement of Mix Column Transformation in AES by equivalent Dynamic Mix Column Transformation. A Dynamic Mix Column Transformation comprises dynamic MDS Matrices which are based on default MDS Matrix of AES and mbit additional key. Here m is a variable length that does not exceed the product of

• Type: Journal
• Year: 2011
• Where: IACR
• Authors: Ghulam Murtaza, Azhar Ali Khan, Syed Wasi Alam, Aqeel Farooqi
• Keywords: Block Ciphers, Dynamic Mix, IACR 2011, Rijndael