pymschap 0.1

python mschap module

# pymschap

python mschap


# Example


def verify_radius_request(ms_chap_response,authenticator_challenge,username,userpwd,secret,authenticator):
import six
from pymschap import mschap, mppe
result = {}
if len(ms_chap_response)!=50:
raise Exception("Invalid MSCHAPV2-Response attribute length")
# if isinstance(userpwd, six.text_type):
# userpwd = userpwd.strip().encode('utf-8')

nt_response = ms_chap_response[26:50]
peer_challenge = ms_chap_response[2:18]
nt_resp = mschap.generate_nt_response_mschap2(
authenticator_challenge,
peer_challenge,
username,
userpwd,
)
if nt_resp == nt_response:
auth_resp = mschap.generate_authenticator_response(
userpwd,
nt_response,
peer_challenge,
authenticator_challenge,
username
)
result['MS-CHAP2-Success'] = auth_resp
result['MS-MPPE-Encryption-Policy'] = '\x00\x00\x00\x01'
result['MS-MPPE-Encryption-Type'] = '\x00\x00\x00\x06'
mppeSendKey, mppeRecvKey = mppe.mppe_chap2_gen_keys(userpwd, nt_response)
send_key, recv_key = mppe.gen_radius_encrypt_keys(
mppeSendKey,
mppeRecvKey,
secret,
authenticator)
result['MS-MPPE-Send-Key'] = send_key
result['MS-MPPE-Recv-Key'] = recv_key
else:
result['Reply-Message'] = "E=691 R=1 C=%s V=3 M=<password error>" % ('\0' * 32)

return result