US 11,689,896 B2Granted

Secure remote access to private networks without internet connectivity

AssigneeEMC IP Holding Company LLC

InventorsVaneeswaran N, Dheepan R

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Abstract

Embodiments for providing secure communicate between a remote system in a private network by a mobile device using a mobile app using a short message service (SMS) protocol without using Internet Protocol (IP) communications. The mobile application is registered with the remote system using a pre-shared key (PSK), and SMS source validation by the remote system is performed using timestamp and location information provided by the mobile device. Any specified command to be executed on the remote system is validated against a set of authorized commands. Such embodiments are particularly useful for cases in which there is no or very low strength infrastructure for full Internet connectivity and/or where remote services desire to stay isolated with no public network connectivity.

Claims18

Dependent claims

A method of accessing a remote system from a mobile device operated by a user, comprising:

providing a mobile application installed on the mobile device for selecting a command perform an operation on the remote system, the mobile device providing communication over a radio-based transmission medium;
sending a pre-shared key (PSK) from the remote system to the mobile device;
determining, on the mobile device, operational information and a command identifier for the command to be performed;
packaging the operational information and command identifier into a short message service (SMS) payload;
encrypting the SMS payload for transmission to the remote system;
receiving the encrypted SMS message payload in a receiver configured to communicate with the mobile device over the radio-based transmission medium;
decrypting the received SMS message for execution of the selected command by the remote system
defining one or more operational constraints for the mobile device and the user, and one or more message constraints for the SMS message, and one or more command constraints for the selected command;
and
validating the received SMS message at the remote system to produce a valid message or an invalid message by:
decoding the decrypted SMS message to unpack the operational information, message information, and selected command;
comparing the operational information to the operational constraints, comparing the message information to the message constraints, and comparing the selected command to the command constraints.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/187,285Filed 26 Feb 2021
Published: US 2022/0279321 A11 Sep 2022
Granted: 27 Jun 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04W 4/14
Messaging; Mailboxes; Announcements: short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
H04L 9/3226
Including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity…: using…
H04W 4/021
Services making use of location information: services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
H04W 4/029
Services making use of location information: location-based management or tracking services