Added string2binary and a function to calculate the Hamming Distance between 2 strings

crypttool.py

@@ -28,6 +28,7 @@ def xorRepeating():
 def xorBrutePrompt():
     isfile = (raw_input('f for file; for string:') == 'f')
     maxresults = input('How many top hits? ')
+    keylength = input('Maximum key length in bytes: ')
     if isfile:
         path = raw_input('path: ')
         path = path.strip()
@@ -36,7 +37,7 @@ def xorBrutePrompt():
             contents = file.readlines()
             contents = [line.strip() for line in contents]
             for code in contents:
-                recursiveResult = xorSingleBrute(code, maxresults, 1)
+                recursiveResult = xorSingleBrute(code, maxresults, keylength)
                 #nach Punkten aufsteigend sortieren:
                 sortedList = sorted(recursiveResult.items(), key=operator.itemgetter(1))[-maxresults:]
                 #Liste in maximalwert dieser als Tupel anhaengen:
@@ -50,7 +51,7 @@ def xorBrutePrompt():
                     print(i[0])
     else:
         encoded = raw_input('Input your Hex String: ')
-        result = xorSingleBrute(encoded, maxresults, 1)
+        result = xorSingleBrute(encoded, maxresults, keylength)
         sortedResults = sorted(result.items(), key=operator.itemgetter(1))[-maxresults:]
         for i, j in sortedResults:
             print(i)
@@ -138,6 +139,18 @@ def translate(inputString, inputType, outputType):
         result = chr(inputString)
     return result
 
+def string2bin(input):
+	return ''.join(format(ord(x), 'b').zfill(8) for x in input)
+
+def hammingDistance(string1, string2):
+    diffs = 0
+    bin1 = string2bin(string1)
+    bin2 = string2bin(string2)
+    for b1, b2 in zip(bin1, bin2):
+        if b1 != b2:
+            diffs += 1
+    return diffs
+
 def urlEncoder():
     input = raw_input('Pleae input your String: ')
     print(urllib.quote_plus(input))
@@ -148,6 +161,21 @@ def reverser():
 
 def base64prompt():
     b64regex = '^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$'
+    isfile = (raw_input('f for file, s for string: ') == 'f')
+    if isfile:
+        path = raw_input('Path: ')
+        path = path.strip()
+        outputPath = raw_input('Output file: ')
+        with open(path, 'r') as file:
+            contents = file.read()
+            file.close()
+            #contents = [line.strip() for line in contents]
+        decoded = base64.b64decode(contents)
+        with open(outputPath, 'w') as outfile:
+            #for line in contents:
+            outfile.write(decoded)
+            outfile.close()
+    else:
         inputString = raw_input('Please input your string: ')
         if (re.match(b64regex, inputString)):
             print(base64.b64decode(inputString))