placeholder for security measures
diff --git a/Demo/pdist/security.py b/Demo/pdist/security.py
new file mode 100755
index 0000000..29bc945
--- /dev/null
+++ b/Demo/pdist/security.py
@@ -0,0 +1,26 @@
+class Security:
+
+ def __init__(self):
+ import os
+ env = os.environ
+ if env.has_key('PYTHON_KEYFILE'):
+ keyfile = env['PYTHON_KEYFILE']
+ elif env.has_key('HOME'):
+ keyfile = env['HOME'] + '.python_keyfile'
+ else:
+ keyfile = '.python_keyfile'
+ try:
+ self._key = eval(open(keyfile).readline())
+ except IOError:
+ raise IOError, "python keyfile %s not found" % keyfile
+
+ def _generate_challenge(self):
+ import whrandom
+ return whrandom.randint(100, 100000)
+
+ def _compare_challenge_response(self, challenge, response):
+ return self._encode_challenge(challenge) == response
+
+ def _encode_challenge(self, challenge):
+ p, m = self._key
+ return pow(challenge, p, m)