Auday H. Al-Wattar1
, Ramlan Mahmod2
, Zuriati Ahmad Zukarnain3
, and Nur
Izura Udzir4
,
1
Faculty of Computer Science and Information Technology
Universiti Putra Malaysia,
43400 UPM, Serdang, Selangor.
ABSTRACT
The use of key-dependent shiftRows can be considered as one of the applied methods for altering the
quality of a cryptographic algorithm. This article describes one approach for changing the ShiftRows
transformation employed in the algorithm AES. The approach employs methods inspired from DNA
processes and structure which depended on the key while the parameters of the created new ShiftRows have
characteristics identical to those of the original algorithm AES in addition to increase its resistance
against attacks. The proposed new ShiftRows were tested for coefficient correlation for dynamic and static
independence between the input and output. The NIST Test Suite tests were used to test the randomness for
the block cipher that used the new transformation.
KEYWORDS
ShiftRows, Block cipher, DNA, AES, NIST, Coefficient correlation
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