USE PYTHON BUT NO PYTHON MODULES

cipher from part one

#caesar cipher for all 128 ASCII characters

#method to encrypt

def encrypt(s,key):

r=""#result string

for i in s:

n = ord(i)

n = (n+key)%128

r=r+chr(n)

return r

#method to decrypt

def decrypt(s,key):

r=""#result string

for i in s:

n = ord(i)

n = (n-key)%128

if(n

n=128-n

r=r+chr(n)

return r

#testing above method

s = input("Enter text to encrypt:")

key =int( input("Enter key:"))

e=encrypt(s,key)

d=decrypt(e,key)

print("Encrypted string:",e)

print("Decrypted sting:",d)

Must provide your own NoWar.dat

all needed is given

remeber to not use any modules

all info is given

Write a python program A that reads a text file called 'NoWar.dat' containing the contents of a letter addressed to Mr. Trump. The program should encrypt the contents of the file using Caesar's cipher from part 1 and then save to a file called 'Trump.dat'. The program should then send the 'Trump.dat' file to another computer running a python program B. Program B should accept the contents of the 'Trump.dat' file and save to the hard drive. Program B should then open the saved Trump.dat' and attempt to break the encryption by trial and error. This involves trying different keys until recognizable text is decoded. Once decoded program B should print the contents of 'NoWar.dat' to the screen. A sample of the screen shot from program B should be included in the submission along with the 'NoWar.dat' file. (Hint: finding recognizable text involves using a keywords that are likely to be present in the original letter to Mr. Trump] [Note: Any program A should be able to work with any program B and vice versa. This allows students to test their programs in a group of at least two persons. However, each student MUST write program A and B]