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VM/novnc-client/qvncwidget/rfbdes.py

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+
+import pyDes
+
+class RFBDes(pyDes.des):
+    def setKey(self, key):
+        """
+        RFB protocol for authentication requires client to encrypt
+        challenge sent by server with password using DES method. However,
+        bits in each byte of the password are put in reverse order before
+        using it as encryption key.
+        """
+        newkey = list()
+        for bsrc in key:
+            btgt = 0
+            for i in range(8):
+                if bsrc & (1 << i):
+                    btgt = btgt | (1 << 7-i)
+            newkey.append(btgt)
+        super(RFBDes, self).setKey(newkey)