from random import randint,choice
from math import ceil,log
getVar = lambda searchList, ind: [searchList[i] for i in ind]
find = lambda searchList, elem: [[i for i, x in enumerate(searchList) if x == e] for e in elem]
mod = lambda n,m: n % m
def set_up_cipher(): #Use this to change your cipher
alpha = '1234567890qwertyuiop[]asdfghjkl;zxcvbnm,.!@#$%^&*()_+-=-{}:<>|QWERTYUIOPASDFGHJKLZXCVBNM ~`?°'
cipher = "".join([list(alpha)[randint(0,len(list(alpha))-1)] for i in range(5000)])
f = open('cipher.txt','r+')
f.truncate()
f = open('cipher.txt','r+')
f.write(cipher)
def baseExpansion(n,c,b):
i = len(n)
base10 = sum([pow(c,i-k-1)*n[k] for k in range(i)])
j = int(ceil(log(base10 + 1,b)))
baseExpanded = [mod(base10//pow(b,j-p),b) for p in range(1,j+1)]
return baseExpanded
cipher = open('cipher.txt').read()+'\n'
def wordEncrypt(word):
cipherWord = find(cipher,list(word))
keys = [randint(5001,7000), randint(2,5000)]
encryptedWord = baseExpansion(list(map(choice, cipherWord)),keys[0],keys[1])
encryptedWord.extend(keys)
return list(map(int,encryptedWord))
def wordDecrypt(encryptedList):
encryptedWord = encryptedList[0:len(encryptedList)-2]
keys = encryptedList[len(encryptedWord):len(encryptedList)]
decryptedList = map(int,baseExpansion(encryptedWord, keys[1], keys[0]))
return "".join(getVar(cipher,decryptedList))
def mainEandD(): #Interactive
print('Please Enter e for Encryption or d for Decryption')
print(' ')
counter = True
counter2 = True
while counter:
while counter2:
func = input('Encrypt or Decrypt: ')
print(' ')
if func.lower() == 'e':
print('Would You Like to Encrypt a Word or a Text File?')
print(' ')
while True:
fOrw = input('F/W: ')
print(' ')
if fOrw.lower().rstrip() == 'w':
word = input('Enter Word: ')
print(' ')
print('Encrypting...')
print(' ')
print('The Encrypted Word is: {}'.format(wordEncrypt(word)))
print(' ')
counter2 = False
break
elif fOrw.lower().rstrip() == 'f':
while True:
try:
wordInput = input('Enter Filename: ')
print(' ')
print('Encrypting...')
print(' ')
word = open(wordInput, 'r+')
encryptedWord = wordEncrypt(word.read())
word.close()
word = open(wordInput, 'r+')
word.truncate()
word.write(str(encryptedWord))
word.close()
print('The Text File Has Been Encrypted')
print(' ')
counter2 = False
break
except:
print(' ')
print('Enter a Valid Filename or Type')
print(' ')
break
else:
print('Please enter f for File or w for Word')
print(' ')
elif func.lower() == 'd':
print('Would You Like to Decrypt a Word or Text File?')
print(' ')
while True:
fOrw = input('F/W: ')
print(' ')
if fOrw.lower().rstrip() == 'w':
while True:
try:
encryptedWord = eval(input('Enter Encrypted Word: ').rstrip())
print(' ')
print('Decrypting...')
print(' ')
print('The Decrypted Word is: {}'.format(wordDecrypt(encryptedWord)))
print(' ')
counter2 = False
break
except:
print(' ')
print('You did not enter a the correct type')
print(' ')
break
elif fOrw.lower().rstrip() == 'f':
while True:
try:
wordInput = input('Enter Filename: ')
print(' ')
print('Decrypting...')
print(' ')
word = open(wordInput, 'r+')
decryptedWord = wordDecrypt(eval(word.read()))
word.close()
word = open(wordInput, 'r+')
word.truncate()
word.write(str(decryptedWord))
word.close()
print('The Text File Has Been Decrypted')
print(' ')
counter2 = False
break
except:
print(' ')
print('You did not enter a the correct type or Filename')
print(' ')
break
else:
print('Please enter f for File or w for Word')
print(' ')
else:
print('Please Enter e for Encryption and d for Decryption')
print(' ')
print('Would you like to Encrypt or Decrypt another word or file?')
print(' ')
while True:
tryAgain = input('Y/N: ')
print(' ')
if tryAgain.lower().rstrip() == 'n':
print('Thank You!')
print(' ')
counter = False
break
elif tryAgain.lower().rstrip() == 'y':
counter2 = True
break
else:
print('Please Enter Either Y for Yes or N for No')
print(' ')
#mainEandD()
Diff to Previous Revision
--- revision 6 2011-11-22 01:40:57
+++ revision 7 2011-11-22 04:18:15
@@ -64,11 +64,9 @@
wordInput = input('Enter Filename: ')
print(' ')
print('Encrypting...')
+ print(' ')
word = open(wordInput, 'r+')
encryptedWord = wordEncrypt(word.read())
- print(' ')
- print('The Encrypted Content is: {}'.format(encryptedWord))
- print(' ')
word.close()
word = open(wordInput, 'r+')
word.truncate()
@@ -114,11 +112,9 @@
wordInput = input('Enter Filename: ')
print(' ')
print('Decrypting...')
+ print(' ')
word = open(wordInput, 'r+')
decryptedWord = wordDecrypt(eval(word.read()))
- print(' ')
- print('The Decrypted Content is: {}'.format(decryptedWord))
- print(' ')
word.close()
word = open(wordInput, 'r+')
word.truncate()
