class IntegrationHelper:



    def __init__(self,

              username=None, password=None, sharedKey=None,

              certChain=None, privateKey=None,

              cryptoID=None, protocol=None,

              x509Fingerprint=None,

              x509TrustList=None, x509CommonName=None,

              settings = None):



        self.username = None

        self.password = None

        self.sharedKey = None

        self.certChain = None

        self.privateKey = None

        self.checker = None



        #SRP Authentication

        if username and password and not \

                (sharedKey or certChain or privateKey):

            self.username = username

            self.password = password



        #Shared Key Authentication

        elif username and sharedKey and not \

                (password or certChain or privateKey):

            self.username = username

            self.sharedKey = sharedKey



        #Certificate Chain Authentication

        elif certChain and privateKey and not \

                (username or password or sharedKey):

            self.certChain = certChain

            self.privateKey = privateKey



        #No Authentication

        elif not password and not username and not \

                sharedKey and not certChain and not privateKey:

            pass



        else:

            raise ValueError("Bad parameters")



        #Authenticate the server based on its cryptoID or fingerprint

        if sharedKey and (cryptoID or protocol or x509Fingerprint):

            raise ValueError("Can't use shared keys with other forms of"\

                             "authentication")



        self.checker = Checker(cryptoID, protocol, x509Fingerprint,

                               x509TrustList, x509CommonName)

        self.settings = settings