Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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. As stated in Sect. 3.5.2, one important property which makes DES secure is that
the S-boxes are nonlinear. In this problem we verify this property by computing the
output of S1 for several pairs of inputs.
Show that S1(x1)⊕S1(x2) = S1(x1 ⊕x2), where “⊕” denotes bitwise XOR, for:
1. x1 = 000000, x2 = 000001
I KNOW THAT THE ANSWER IS
11102⊕00002≠S1(0000012)
11102≠00002
CAN SOMEONE EXPLAIN HOW DO WE GET THIS NUMBERS?
Ty!
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