Answered: Create a program using C# that…

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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Create a program using C# that implements the stream ciphers Cryptographic method . A stream cipher method inputs digits, bits, or characters and encrypts the stream of data. The onetime pad is an example of a stream cipher.In this formative you have been requested to create an application that will work as the One-time pad (OTP), also called Vernam-cipher or the perfect cipher. This is a crypto algorithm where plaintext is combined with a random key and generate a ciphertext.

The programme should received a string " How are you Isaac "

The programme should generate an OTP of the length of the string entered "How are you Isaac "

One-T ime Pad
Plain text: H
w A
R E
Y
7
14
22
17
4
24
14
20
OTP:
13
1 19
25
16
17
23
N
в т
Q
A
R
Initial total: 20
16
23 19
42
20
24
31
43
Mod 26:
20
16
23 19
16
20
24
5
17
Ciphertext:
Q
Q
Y
F
R

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