def verify_data(self, data):
sent_hash = utils.hex_decode(data[-40:])
message = data[:-41]
h = hmac.new(self.session_key, message, hashlib.sha1)
if sent_hash != h.digest():
return False
return message
def lineReceived(self, data):
print "Client: got data %s" % data
if data[0:6] == "HELLO\t":
self.session_key = utils.hex_decode(data.split("\t")[1])
message = self.verify_data(data)
#print "Client: Got message %s\n" % message
#print "Client: self.session_key=%s" % utils.hex_encode(self.session_key)
if message == False:
self.factory.deferred.callback("ERROR Hash mismatch")
return
self.factory.deferred.callback(message)
def lineReceived(self, data):
print "Client: got data %s" % data
# Check for HELLO first as it defines our session key....
if data[0:6] == "HELLO\t":
self.session_key = utils.hex_decode(data.split("\t")[1])
self.hmac_wrapper = utils.hmac_wrapper(self.session_key + self.config.get('auth', 'shared_secret'))
message = self.verify_data(data)
#print "Client: Got message %s\n" % message
#print "Client: self.session_key=%s" % utils.hex_encode(self.session_key)
if message == False:
print "ERROR Hash mismatch"
return
self.parse_message(message)
from hashlib import md5
from os import urandom
from Curve import Curve
from utils import public_key, private_key, hex_decode, bytes_to_long, mod_invert, long_to_bytes
MODE_SIZE = 32
CURVE = (
hex_decode(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD97"),
hex_decode(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6C611070995AD10045841B09B761B893"),
hex_decode(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD94"),
hex_decode(
"00000000000000000000000000000000000000000000000000000000000000a6"),
hex_decode(
"0000000000000000000000000000000000000000000000000000000000000001"),
hex_decode(
"8D91E471E0989CDA27DF505A453F2B7635294F2DDF23E3B122ACC99C9E9F1E14"),
)
def sign(curve, private_key, digest):
q = curve.q
e = bytes_to_long(digest) % q
if e == 0:
e = 1
while True:
k = bytes_to_long(urandom(MODE_SIZE)) % q