code: def authenticate(self, secret):
      remote_version = ppc.str_(self.receive())
      if version != remote_version:
          logging.error(
              "PP version mismatch (local: pp-%s, remote: pp-%s)"
              % (version, remote_version)
          )
          logging.error(
              "Please install the same version of PP on all nodes"
          )
          return False
      srandom = ppc.b_(self.receive())
      secret = ppc.b_(secret)
      answer = sha_new(srandom + secret).hexdigest()
      self.send(answer)
      response = ppc.b_(self.receive())
      if response == ppc.b_("OK"):
          return True
      else:
          return False
  
imports: import logging
  import os
  import socket
  import struct
  import hashlib
  from .None import common
label_desc: Use image node_id 3 for calling the Transport obj's underlying member method code with example usage: obj.authenticate(secret) and returns: False, True, False