Enhancement of Rc6 (rc6_en) Block Cipher Algorithm and Comparison with Rc5 & Rc6

Content Provider	Semantic Scholar
Author	Tyagi, Vikas Singh, Shrinivas
Copyright Year	2012
Abstract	In this paper, we present an enhanced version of RC6 Block Cipher Algorithm (RC6_En – RC6 enhanced version), which is a symmetric encryption algorithm [1] designed for 256-bit plain text block. RC6 uses four (w-bit) registers for storing plain text and for data-dependent rotations [2, 3], but this enhanced version (RC6_En) uses eight (w-bit) register that helps to increase the performance as well as improve security. Its salient feature includes two-variable algebraic expression modulo 2w and 2 Box-Type operations, Box-Type I & Box-Type II. Each Box-Type operation uses two (w-bit) registers. Box-Type I works much like two registers (A & B or C & D) operation in RC6 but in Box-Type II bitwise exclusive-or is swapped by integer addition modulo 2w used in Box-Type I and vice-versa, it improves Diffusion in each round. This enhanced version needs 2r+4 additive round-keys and uses every round-key twice for encrypting the file. This enhanced version performs better with respect to RC5[4, 5] and RC6[2, 3] when file size is larger.
Starting Page	39
Ending Page	43
Page Count	5
File Format	PDF HTM / HTML
Volume Number	3
Alternate Webpage(s)	http://www.rroij.com/open-access/enhancement-of-rc-rcen-block-cipher-algorithm-and-comparison-with-rc-39-43.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article