Encrypting cookies in HTTP-headers

[Thomas Weholt]

I need to do simple, or advanced if possible :-), encryption of cookies in
HTTP-requests. I've tried to use base64 and rotor but the cookies seem
scrambled when decoded. Does anybody has any example on how to achieve this
?

My code is something like this, using BaseHTTPServer :

# Setting the cookie :
key = base64.encodestring(key)
value = base64.encodestring(value)
self.send_header('Set-Cookie', '%s=%s' % (key, value))

# Reading it back :
import Cookie
c = Cookie.SmartCookie()
c.load(self.headers['Cookie'])
for key in c.data.keys()
   d = c[key]
   print base64.decode(d.key), base64.decode(d.value)

And the contents of the two fields are just crap.

If I get this to work I'll apply some encryption to the values first before
base64.encoding them. I tried to use rotor on the values without
base64-encoding, but the result contained characters that screwed up the
cookie completly, -- therefore base64 after encryption.

Any help appreciated.

Best regards,
Thomas Weholt