1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext letters to show the plain text. A BC DE F GH K MNO R ST yw xY Z (1 of 25) A K M ABOUT P R AT IN WITH letter 1 letter 2 letter 3 letter 4 letter 5 letter 6 letter 7 letter 8 2. Assign the numbers in the figure to symmetric cryptography concepts. 2 2 of 25) 3 2 secure communication channel decryption sender unsecure communication channel receiver ciphertext encryption plaintext shared key

Management Of Information Security
6th Edition
ISBN:9781337405713
Author:WHITMAN, Michael.
Publisher:WHITMAN, Michael.
Chapter12: Protection Mechanisms
Section: Chapter Questions
Problem 19RQ
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1.
Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext letters to show the plain text.
A
в
D
G
H
K
(1 of 25)
N O
ST
X Y
M
R
V
A
B
D
E
F
H
M
N
ABOUT
AT
IN
WITH
letter 1"
letter 2
letter 4
letter 5
letter 6
letter 7
letter 8
2. Assign the numbers in the figure to symmetric cryptography concepts.
2
2
(2 of 25)
5
6: 5
3
9
2
secure communication channel
decryption
sender
unsecure communication channel
receiver
ciphertext
encryption
plaintext
shared key
o o
O o o o
a o o o o o ooo O
O o O O
O o O
o o o o o
O o o ooo ooo o
O o
o o oO
AO O O o
O o o
O o
O o o
•o o o o
o o o
o o
O o
n o o ooo ooo o
O o
•o o ooo ooo o
O O
O o oo
O o
O o oO
mo o O ooo oo o
O o o
o o o ooo o o
O o o O
O ooO
O o
O o o
o o o oooO
o o o ooo o o o
O o O oo O
O O
o o o ooo o
O O
O o o
O o o
Transcribed Image Text:1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext letters to show the plain text. A в D G H K (1 of 25) N O ST X Y M R V A B D E F H M N ABOUT AT IN WITH letter 1" letter 2 letter 4 letter 5 letter 6 letter 7 letter 8 2. Assign the numbers in the figure to symmetric cryptography concepts. 2 2 (2 of 25) 5 6: 5 3 9 2 secure communication channel decryption sender unsecure communication channel receiver ciphertext encryption plaintext shared key o o O o o o a o o o o o ooo O O o O O O o O o o o o o O o o ooo ooo o O o o o oO AO O O o O o o O o O o o •o o o o o o o o o O o n o o ooo ooo o O o •o o ooo ooo o O O O o oo O o O o oO mo o O ooo oo o O o o o o o ooo o o O o o O O ooO O o O o o o o o oooO o o o ooo o o o O o O oo O O O o o o ooo o O O O o o O o o
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ISBN:
9781337405713
Author:
WHITMAN, Michael.
Publisher:
Cengage Learning,