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Graphics Interchange Format  |  1998-02-10  |  37.5 KB  |  282x448  |  4-bit (16 colors)
   ocr: X17 E(X) a26 K125 D26 S-Boxes C17.C18:C19:C20 Y3.Y8Y14.Y25 Figure 5: A one-round linear approximation for DES.