lib/popcorn: extract Router::build_route private service

[nit.git] / lib / crypto.nit

diff --git a/lib/crypto.nit b/lib/crypto.nit
index 357eb99..2abe5d7 100644 (file)
--- a/lib/crypto.nit
+++ b/lib/crypto.nit
@@ -154,32 +154,23 @@ redef class Text
                end
                return arr.to_s
        end
+end
+
+redef class Bytes
 
        # Returns `self` xored with `key`
        #
-       # The shortest of the two is cycled through until the longest has been
-       # completely xored.
+       # The key is cycled through until the `self` has been completely xored.
        #
-       #     assert "goodmorning".xor(" ".to_bytes) == "GOODMORNING"
-       fun xor(key: SequenceRead[Byte]): Text do
-               var xored = new Bytes.with_capacity(bytelen.max(key.length))
-
-               var shortest: SequenceRead[Byte]
-               var longest: SequenceRead[Byte]
-
-               if key.length > self.length then
-                       shortest = self.to_bytes
-                       longest = key
-               else
-                       shortest = key
-                       longest = self.to_bytes
-               end
+       #     assert "goodmorning".to_bytes.xorcipher(" ".to_bytes) == "GOODMORNING".bytes
+       fun xorcipher(key: Bytes): Bytes do
+               var xored = new Bytes.with_capacity(self.length)
 
-               for i in longest.length.times do
-                       xored.add(longest[i] ^ shortest[i % shortest.length])
+               for i in self.length.times do
+                       xored.add(self[i] ^ key[i % key.length])
                end
 
-               return xored.to_s
+               return xored
        end
 end