(self, msg, iv)
return crypto.decrypt_message(msg)
:raises: ValueError
:raises: ValueError
: raises : ValueError
def decrypt_message(self, msg, iv):
        """
        :raises: ValueError
        """
        crypto = WeChatWxaCrypto(self.session_key, iv, self.app.appid)
        return crypto.decrypt_message(msg)
def decrypt_message ( self , msg , iv ) : crypto = WeChatWxaCrypto ( self . session_key , iv , self . app . appid ) return crypto . decrypt_message ( msg )