import csv
import sys
#The password list - We start with it populated for testing purposes
passwords = [["yahoo","XqffoZeo"],["google","CoIushujSetu"]]
#The password file name to store the passwords to
passwordFileName = "samplePasswordFile"
#The encryption key for the caesar cypher
encryptionKey=16
#Caesar Cypher Encryption
def passwordEncrypt (unencryptedMessage, key):
#We will start with an empty string as our encryptedMessage
encryptedMessage = ''
#For each symbol in the unencryptedMessage we will add an encrypted symbol into the encryptedMessage
for symbol in unencryptedMessage:
if symbol.isalpha():
num = ord(symbol)
num += key
if symbol.isupper():
if num > ord('Z'):
num -= 26
elif num < ord('A'):
num += 26
elif symbol.islower():
if num > ord('z'):
num -= 26
elif num < ord('a'):
num += 26
encryptedMessage += chr(num)
else:
encryptedMessage += symbol
return encryptedMessage
def loadPasswordFile(fileName):
with open(fileName, newline='') as csvfile:
passwordreader = csv.reader(csvfile)
passwordList = list(passwordreader)
return passwordList
def savePasswordFile(passwordList, fileName):
with open(fileName, 'w+', newline='') as csvfile:
passwordwriter = csv.writer(csvfile)
passwordwriter.writerows(passwordList)
while True:
print("What would you like to do:")
print(" 1. Open password file")
print(" 2. Lookup a password")
print(" 3. Add a password")
print(" 4. Save password file")
print(" 5. Print the encrypted password list (for testing)")
print(" 6. Quit program")
print(" 7. Delete a password")
print("Please enter a number (1-7)")
choice = input()
if(choice == '1'): #Load the password list from a file
passwords = loadPasswordFile(passwordFileName)
if(choice == '2'): #Lookup at password
print("Which website do you want to lookup the password for?")
for keyvalue in passwords:
print(keyvalue[0])
passwordToLookup = input()
for i in range (len(passwords)):
if passwordToLookup in passwords [i][0]:
print (password)
#The encryption key for the caesar cypher
unencryptionKey=-16
#Caesar Cypher Encryption
def passwordunEncrypt (encryptedMessage, key):
#We will start with an empty string as our encryptedMessage
unencryptedMessage = ''
#For each symbol in the unencryptedMessage we will add an encrypted symbol into the encryptedMessage
for symbol in encryptedMessage:
if symbol.isalpha():
num = ord(symbol)
num += key
if symbol.isupper():
if num > ord('Z'):
num -= 26
elif num < ord('A'):
num += 26
elif symbol.islower():
if num > ord('z'):
num -= 26
elif num < ord('a'):
num += 26
encryptedMessage += chr(num)
else:
encryptedMessage += symbol
return encryptedMessage
encrypted = passwordEncrypt("Hello world!", 16)
passwordEncrypt(encrypted, -16)
print(passwordunEncrypt(passwords[i][1], 16))
####### YOUR CODE HERE ######
#You will need to find the password that matches the website
#You will then need to decrypt the password
#
#1. Create a loop that goes through each item in the password list
# You can consult the reading on lists in Week 5 for ways to loop through a list
#
#2. Check if the name is found. To index a list of lists you use 2 square backet sets
# So passwords[0][1] would mean for the first item in the list get it's 2nd item (remember, lists start at 0)
# So this would be 'XqffoZeo' in the password list given what is predefined at the top of the page.
# If you created a loop using the syntax described in step 1, then i is your 'iterator' in the list so you
# will want to use i in your first set of brackets.
#
#3. If the name is found then decrypt it. Decrypting is that exact reverse operation from encrypting. Take a look at the
# caesar cypher lecture as a reference. You do not need to write your own decryption function, you can reuse passwordEncrypt
#
# Write the above one step at a time. By this I mean, write step 1... but in your loop print out every item in the list
# for testing purposes. Then write step 2, and print out the password but not decrypted. Then write step 3. This way
# you can test easily along the way.
#
####### YOUR CODE HERE ######
if(choice == '3'):
print("What website is this password for?")
website = input()
print("What is the password?")
unencryptedPassword = input()
encryptedPassword = passwordEncrypt
newsitepassword = [website, encryptedPassword]
passwords.append (newsitepassword)
####### YOUR CODE HERE ######
#You will need to encrypt the password and store it in the list of passwords
#The encryption function is already written for you
#Step 1: You can say encryptedPassword = passwordEncrypt(unencryptedPassword,encryptionKey)]
#the encryptionKey variable is defined already as 16, don't change this
#Step 2: create a list of size 2, first item the website name and the second item the password.
#Step 3: append the list from Step 2 to the password list
####### YOUR CODE HERE ######
if(choice == '4'): #Save the passwords to a file
savePasswordFile(passwords,passwordFileName)
if(choice == '5'): #print out the password list
for keyvalue in passwords:
print(', '.join(keyvalue))
if(choice == '6'): #quit our program
sys.exit()
if(choice == '7'):
print ("What website password would you like to delete?")
for keyvalue in passwords:
print(keyvalue[0])
passwordToDelete = input()
for i in range (len(passwords)):
if passwordToDelete in passwords [i][0]:
passwords.remove
print()
print()Error:
line 117
return encryptedMessage
^
SyntaxError: 'return' outside function
Process finished with exit code 1
