def send_new_aes_key(self):
self.aes_key = qcrypt.create_aes_key()
k = qcrypt.pub_encrypt(self.aes_key, self.pub_key)
signature = auth.sign_msg(self.partner_secret_hash, k)
self.send('set_aes_key', k, signature)
self.key_agreement = False
print 'sending new aes session key'
return self.aes_key
def verify_auth(self, new_auth_msg):
vr = auth.verify_auth(self.secret, self.salt, self.auth_msg, new_auth_msg)
msg = str(int(vr))+os.urandom(7)
sig = auth.sign_msg(self.partner_secret_hash, msg)
msg = qcrypt.normalize(msg)
self.send('verification_result', msg, sig)
self.authenticated = vr
return vr
def set_aes_key(self, msg_e, signature):
vr = auth.verify_signature(self.secret, self.salt, msg_e, signature)
if vr:
k = qcrypt.pub_decrypt(msg_e, self.pri_key)
self.aes_key = k
self.key_agreement = True
msg = qcrypt.aes_encrypt(AES_SET_MSG, self.aes_key)
signature = auth.sign_msg(self.partner_secret_hash, msg)
self.send('confirm_aeskey', msg, signature)
print 'set aes key. key agreement reached'
else:
k = None
self.send('bad_aeskey', None)
self.key_agreement = False
print 'incorrect message signature'
self.aes_key = k
return k
def request_pub_key(self):
k = self.pri_key.publickey().__getstate__()
msg = qcrypt.normalize(nDDB.encode(k))
signature = auth.sign_msg(self.partner_secret_hash, msg)
self.send('set_pub_key', msg, signature)
print 'sent signed public key'