Basic Idea

A. Data size: 128 bit

B. Key size: 128 bit, 192 bit, 256 bit

C. Structure:

1. Data randomizing

IT -> 12 round iteration of F-Function ->FT

(Feistel Cipher structure)

2. Key scheduling

9 round iteration of G-Function

D. C=E(P,K) P=D(C,K)

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