Construct an affine cipher that uses only uppercase letters of English alphabet encoded as elements of Z26 as shown in the table below: A|B|C|D E FGHIJ KIL M 01|2 3 4567 89 10 11 12 a) Choose a proper key k = (a,b) where a + 1 and b # 0 b) Write the encryption function c) Write the decryption function d) Encrypt the first two letters of your name W|X Y]Z NO|P|O RST UV 13 14 15 16 17 18 19 20 21 22 23 24 25

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Construct an affine cipher that uses only uppercase letters of English alphabet encoded as elements of Z26 as shown in the table below:
A|B|C|D E FG|HIJK|L M
0|1|23 45678
a) Choose a proper key k = (a, b) where a # 1 and b # 0
b) Write the encryption function
c) Write the decryption function
d) Encrypt the first two letters of your name
9 10 11 12
NO|P|Q RST|UVWX|Y|Z
13 14 15 16 17 18 19 20 21 22 23 24 25
Transcribed Image Text:Construct an affine cipher that uses only uppercase letters of English alphabet encoded as elements of Z26 as shown in the table below: A|B|C|D E FG|HIJK|L M 0|1|23 45678 a) Choose a proper key k = (a, b) where a # 1 and b # 0 b) Write the encryption function c) Write the decryption function d) Encrypt the first two letters of your name 9 10 11 12 NO|P|Q RST|UVWX|Y|Z 13 14 15 16 17 18 19 20 21 22 23 24 25
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