def s1c3():
bestscore = 0
beststring = ""
for key in string.ascii_letters: #iterate key possibilities
result = ""
for j in range(0,length):
part = cipher[j] #get a byte from cipher
xorpart = (part ^ ord(key))# xor int form
result = result + chr(xorpart)
# decide the likleyhood the string is deciphered
x = getStringScore(result)
if(x >= bestscore):
bestscore = x
beststring = result
print(beststring)
return 0
def runkeys(ln):
global bestscore
global bestline
#iterate all possible keys
for k in string.printable:
result = ""
key = ord(k) #letter to int
# apply xor across the string
for j in range(0,len(ln)):
part = (key ^ ln[j]) #xor byte
result = result + chr(part) #concat the bytes
#determine the greatest possible score for the line
x = getStringScore(result)
if(x > bestscore):
bestscore = x
bestline = result
return 0