Answered: S1(0)= S2(0)= S3(0)= S4(0)= S5(0)=…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Similar to Problem 3.4 in the textbook(• C. Paar and J. Pelzl, Understanding Cryptography, Springer, 2009. ISBN 978-3-642-04100-6.): What is the output of the a round of the DES f-function when the 48-bit output of the expansion function and the 48-bit round key are both all ones? Write first (in binary) the outputs of the S-boxes:
S1(0)=
S2(0)=
S3(0)=
S4(0)=
S5(0)=
S6(0)=
S7(0)=
S8(0)=
Next, write (in Hexadecimal) the output of the P permutation withing the f-function: ( )

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