Question

Please follow the directions when completing this. Add in comments so I can understand your work. Thank you.

Create your own cryptographic algorithm in Python that is unique and different (i.e. can be like XOR, but must have different values for the numbers like shift the letter 'a' over 3 letters so it equals 'd'). You must make capital letters different values than lowercase numbers. You must be able to encrypt by using this and decrypt this.

Answer 1

Code:

inputMsg = input("Enter the message to be encrypted : ")

encryptedMsg = ''

decryptedMsg = ''

list1 = []

val = 0

i = len(inputMsg) - 1

while i >= 0:

val = ord(inputMsg[i]) - 10

list1.append(val)

encryptedMsg = encryptedMsg + chr(val)

i = i - 1

print("Encrypted message is : ", encryptedMsg)

list1.reverse()

for i in list1:

val = i + 10

decryptedMsg = decryptedMsg + chr(val)

i = i - 1

print("Decrypted message is : ", decryptedMsg)

Python 3.6.1 (default, Dec 2015, 13:05:11)
[GCC 4.8.2] on linux
Enter the message to be encrypted : Hi, Mr.Jon. How are you? Contact me at 123456789
Encrypted message is : /.-,+*)('jW[cjYWjde95keo[hWme>$de@$hC"_>
Decrypted message is : Hi, Mr.Jon. How are you? Contact me at123456789
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