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cpython/Demo/pdist/security.py

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1995-06-21 02:55:59 +02:00
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)