Your country is at war and your enemies are using a secret code to communicate with each other.You have managed to intercept a message that reads asfollows:
:mmZdxZmx]Zpgy
The message is obviously encrypted using the enemy's secret code.You have just learned that their encryption method is based upon the ASCII code.Appendix 3 of your book shows the ACII character set.Individual characters in a string are encoded using this system. For example, the letter "A" isencoded using the number 65 and "B" is encoded using the number 66.
Your enemy's secret code takes each letter of the message and encrypts it as follows:
If(OriginalChar + Key > 126) then EncryptedChar = 32 + ((OriginalChar + Key ) - 127)
else EncryptedChar = (OriginalChar + Key)
For example, if the enemy used Key=10 then the message "Hey" would be encrypted as:
Character
ASCII Code
H
72
e
101
y
121
Encrypted H = (72 + 10) = 82 = R in ASCII
Encrypted e = (101 + 10) = 111 = o in ASCII
Encrypted y = (121 + 10) - 127 = 36 = $ in ASCII
Consequently, "Hey" would be transmitted as "Ro$".
Write a program that decrypts the intercepted message.You only know that the key used is a number between 1 and 100.Your program should try to decodethe message using all possible keys between 1 and 100.When you try the valid key, the message will make sense.For all other keys the message willappear as gibberish.
Use C++-Strings for this assignment.