Overall Block Diagram

Quad-Round

Quad-Round

Quad-Round

Quad-Round

Quad-Round

Quad-Round

Plain Text(128 bits)

Cipher Text(128 bits)

12 Quad Rounds

2 Oct-Rounds

2 Oct-Rounds

2 Oct-Rounds

2 Oct-Rounds

2 Oct-Rounds

2 Oct-Rounds

k1

k2

k3

k10

k11

k12

Key

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