Answered: 1- A simple encryption method is…

Name: 1- A simple encryption method is being used to encrypt a small num
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Description: 1- A simple encryption method is being used to encrypt a small number (called the secret number). The method by which this encryption works is as follows: I. Choose a random seed number

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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1- A simple encryption method is being used to encrypt a small number (called the secret number). The method by which this encryption works is as follows: I. Choose a random seed number II. Calculate the key by multiplying the seed with the secret under modulus 7 III. Finally, multiply the key with the secret to get the encrypted secret Example: If our secret number was 45Randomly choose seed = 6 key = secret x seed (mod 7) = 45 x 6 (mod 7) = 4Encrypted Secret = key x secret = 45 x 4 = 180 Based on this encryption method, when randomly picking a seed number, show which number should not be picked, so that the Encrypted Secret we end up within the end is not the same as the original Secret Number we started with.

3- A simple encryption method is being used to encrypt a small number (called the secret
number). The method by which this encryption works is as follows:
1.
Choose a random seed number
Calculate the key by multiplying the seed with the secret under modulus 7
Finally, multiply the key with the secret to get the encrypted secret
I.
II.
Example:
If our secret number was 45
Randomly choose seed = 6
key = secret x seed (mod 7) = 45 x 6
Seed
Number
Randomly Generated
(mod 7) = 4
Encrypted Secret = key x secret = 45 x
Secret
Seed
Number
(mod 7)
Кey
4= 180
Number
Based on this encryption method,
when randomly picking a seed
number, show which number should
not be picked, so that the Encrypted
Encrypted
Secret
Secret
Key
Number
Secret we end up within the end is
not the same as the original Secret
Number we started with.
Encrypted
Secret
Secret
Number
II
II

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