Security on the move: indirect authentication using Kerberos
MobiCom '96 Proceedings of the 2nd annual international conference on Mobile computing and networking
The remote processing framework for portable computer power saving
Proceedings of the 1999 ACM symposium on Applied computing
Multimedia security and copyright protection
Multimedia security and copyright protection
iMobile: a proxy-based platform for mobile services
WMI '01 Proceedings of the first workshop on Wireless mobile internet
Proxy-based security protocols in networked mobile devices
Proceedings of the 2002 ACM symposium on Applied computing
Proceedings of the 40th annual Design Automation Conference
Security Issues in Mobile Ecommerce
DEXA '00 Proceedings of the 11th International Workshop on Database and Expert Systems Applications
Analyzing the energy consumption of security protocols
Proceedings of the 2003 international symposium on Low power electronics and design
Protection of wavelet-based watermarking systems using filter parametrization
Signal Processing - Special section: Security of data hiding technologies
Security as a new dimension in embedded system design
Proceedings of the 41st annual Design Automation Conference
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
Energy efficiency measurement for multimedia audio decoding on embedded systems
Proceedings of the 2nd international conference on Ubiquitous information management and communication
Energy analysis of multimedia video decoding on mobile handheld devices
Computer Standards & Interfaces
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Digital watermarking embeds an imperceptible signature or watermark in a digital file containing audio, image, text, or video data. The watermark can be used to authenticate the data file and for tamper detection. It is particularly valuable in the use and exchange of digital media, such as audio and video, on emerging handheld devices. However, watermarking is computationally expensive and adds to the drain of the available energy in handheld devices. In this paper, we first analyze the energy profile of various watermarking algorithms. We also study the impact of security and image quality on energy consumption. Second, we present an approach in which we partition the watermarking embedding and extraction algorithms and migrate some tasks to a proxy server. This leads to a lower energy consumption on the handheld without compromising the security of the watermarking process. Experimental results show that executing the watermarking tasks that are partitioned between the proxy and the handheld devices, reduces the total energy consumed by 80%, and improves performance by two orders of magnitude compared to running the application on only the handheld device.