Abstract:
Scalability of symmetric cipher is still not as
natural as for public-key cryptosystems. Most of the
current block ciphers do not support freely variable
block and key lengths. A generalization of the
concepts of Feistel Networks (FN), known as
Extended Feistel Network (EFN), that splits the input
blocks into n>2 sub-blocks. EFN consists of a series
of rounds whereby at least one sub-block is subjected
to an F function. The aim of this system compares the
performance of scalable Extended Feistel Network
by using a variety of file sizes. This is done by
compare RC6 that uses EFN-Type II and MARS that
uses EFN-Type III encryption algorithms.
