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. Expansion P-box 32 01 02 03 04 05 04 05 06 07 08 09 08 09 10 11 12 13 12 13 14 15 16 17 16 17 18 19 20 21 20 21 22 23 24 25 24 25 26 27 28 29 28 29 31 31 32 01 b) For the key: Using the key permutation table (provided below), show the output of this conversion process. 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 %3D

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. Expansion P-box 32 01 02 03 04 05 04 05 06 07 08 09 08 09 10 11 12 13 12 13 14 15 16 17 16 17 18 19 20 21 20 21 22 23 24 25 24 25 26 27 28 29 28 29 31 31 32 01 b) For the key: Using the key permutation table (provided below), show the output of this conversion process. 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 %3D

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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Question

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.
Expansion P-box
32
01
02
03
04
05
04
05
06
07
08
09
08
09
10
11
12
13
12
13
14
15
16
17
16
17
18
19
20
21
20
21
22
23
24
25
24
25
26
27
28
29
28
29
31
31
32
01
b) For the key: Using the key permutation table (provided below), show the
output of this conversion process.
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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