1. Let M be the plaintext message M = MALAYSIA and the private key, K = ISSOGOODa) Using the expansion P-box (table is provided below), show the plaintext output of this process. b) For the key: Using the key permutation table (provided below), show the output of this conversion process. Expansion P-box320102030405040506070809080910111213121314151617161718192021202122232425242526272829282931313201Key Permutation Table5749413325170901585042342618100259514335271911036052443663554739312315076254463830221406615345372921130528201204

Answered: 1. Let M be the plaintext message M =…

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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1. Let M be the plaintext message M = MALAYSIA and the private key, K = ISSOGOOD a) Using the expansion P-box (table is provided below), show the plaintext output of this process. b) For the key: Using the key permutation table (provided below), show the output of this conversion process.

Expansion P-box
32
01
02
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04
05
04
05
06
07
08
09
08
09
10
11
12
13
12
13
14
15
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17
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19
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20
21
22
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25
24
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28
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31
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32
01
Key Permutation Table
57
49
41
33
25
17
09
01
58
50
42
34
26
18
10
02
59
51
43
35
27
19
11
03
60
52
44
36
63
55
47
39
31
23
15
07
62
54
46
38
30
22
14
06
61
53
45
37
29
21
13
05
28
20
12
04

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