Researchers Creating New Selective Encryption Plan To Make Information Transfer Safer, Conserve Mobile Device Battery Power

Research by a South Dakota State University scientist and his colleagues elsewhere could make it safer to transfer information over mobile devices such as cell phones while conserving battery power.

Researcher Wei Wang said those would be among the benefits from using a proposed new selective encryption technique to protect the most important content in streaming video over wireless networks. The technique helps guarantee security while using less energy.

Because the proposed plan would selectively encrypt information instead of encrypting everything, it would improve efficiency and reduce computing overhead.

Wei Wang, an assistant professor with SDSU’s Department of Electrical Engineering and Computer Science, said those are the chief advantages of the technique, described in the August 2010 journal, IEEE Transactions on Multimedia. Wang was the lead author of the article, which included five co-authors from other universities.

Wang said the research addresses the needs for quality, security and energy efficiency as the demand grows for video and other multimedia content that can be streamed over portable computing devices that are getting smaller and smaller -- easy enough to fit in a palm, in many cases.

“This is a trend: Computers get smaller and smaller, so the cost is reduced. However, because it is so small, it is not as powerful as a laptop or desktop. It has a limited battery and limited computing power. We want to achieve good quality and strong security with a limited battery and limited computing power  -- how do we do that? This is the focus of my research.”

Wang and his colleagues started by examining the multimedia stream and determining that different parts of the data have different importance. That means that different parts of the data stream could be treated differently when it comes to allocating battery power and computing power.

“We determine the most important parts in the multimedia streams and we try to serve the important data first with more resources tomake sure the important data is correct and is transmitted with high quality,” Wang said. “And for the unimportant part, we serve them with low quality. This method of unequal treatment is a new trend in computer networks and multimedia applications.”

The journal article supplies equations and algorithms to explain how the researchers determine what to select for encryption and how to allocate resources.

The research builds on past work by Wang and colleagues on image encryption, but that work was directed at single images. Wang’s earlier studies focused on the importance of encrypting position information as compared to value information -- where something is in a photograph as compared to how dark or light it is, and where the darkness or brightness are, for example.

The earlier research provided solutions for helping toencrypt information when someone wants to use a mobile device for such tasks as scanning a personal check or make a bank deposit.

“The check may have some sensitive information, such as an account number. We don’t have to hide all the information. Rather, we find out what is the most important or sensitive part of the data and then we encrypt those important data or blur those important data,” Wang said. “So this is the concept behind our research: Find the locations, encrypt the locations, and the whole picture is hidden. By doing this, a significant amount of overhead interms of encryption is reduced. The proposed encryption is faster and it’s a natural fit for a low-cost, mobile computing device.”



  • 12 Commercial Crime Sites to Do Your Research

    12 Commercial Crime Sites to Do Your Research

    Understanding crime statistics in your industry and area is crucial for making important decisions about your security budget. With so much information out there, how can you know which statistics to trust? Read Now

  • Boosting Safety and Efficiency

    Boosting Safety and Efficiency

    In alignment with the state of Mississippi’s mission of “Empowering Mississippi citizens to stay connected and engaged with their government,” Salient's CompleteView VMS is being installed throughout more than 150 state boards, commissions and agencies in order to ensure safety for thousands of constituents who access state services daily. Read Now

  • Live From GSX: Post-Show Review

    Live From GSX: Post-Show Review

    This year’s Live From GSX program was a rousing success! Again, we’d like to thank our partners, and IPVideo, for working with us and letting us broadcast their solutions to the industry. You can follow our Live From GSX 2023 page to keep up with post-show developments and announcements. And if you’re interested in working with us in 2024, please don’t hesitate to ask about our Live From programs for ISC West in March or next year’s GSX. Read Now

    • Industry Events
    • GSX
  • People Say the Funniest Things

    People Say the Funniest Things

    By all accounts, GSX version 2023 was completely successful. Apparently, there were plenty of mix-ups with the airlines and getting aircraft from the East Coast into Big D. I am all ears when I am in a gathering of people. You never know when a nugget of information might flip out. Read Now

    • Industry Events
    • GSX

Featured Cybersecurity


New Products

  • XS4 Original+

    XS4 Original+

    The SALTO XS4 Original+ design is based on the same proven housing and mechanical mechanisms of the XS4 Original. The XS4 Original+, however, is embedded with SALTO’s BLUEnet real-time functionality and SVN-Flex capability that enables SALTO stand-alone smart XS4 Original+ locks to update user credentials directly at the door. Compatible with the array of SALTO platform solutions including SALTO Space data-on-card, SALTO KS Keys as a Service cloud-based access solution, and SALTO’s JustIn Mobile technology for digital keys. The XS4 Original+ also includes RFID Mifare DESFire, Bluetooth LE and NFC technology functionality. 3

  • EasyGate SPT and SPD

    EasyGate SPT SPD

    Security solutions do not have to be ordinary, let alone unattractive. Having renewed their best-selling speed gates, Cominfo has once again demonstrated their Art of Security philosophy in practice — and confirmed their position as an industry-leading manufacturers of premium speed gates and turnstiles. 3

  • A8V MIND

    A8V MIND

    Hexagon’s Geosystems presents a portable version of its Accur8vision detection system. A rugged all-in-one solution, the A8V MIND (Mobile Intrusion Detection) is designed to provide flexible protection of critical outdoor infrastructure and objects. Hexagon’s Accur8vision is a volumetric detection system that employs LiDAR technology to safeguard entire areas. Whenever it detects movement in a specified zone, it automatically differentiates a threat from a nonthreat, and immediately notifies security staff if necessary. Person detection is carried out within a radius of 80 meters from this device. Connected remotely via a portable computer device, it enables remote surveillance and does not depend on security staff patrolling the area. 3