Security on the move: indirect authentication using Kerberos
MobiCom '96 Proceedings of the 2nd annual international conference on Mobile computing and networking
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
Security Issues in Mobile Ecommerce
DEXA '00 Proceedings of the 11th International Workshop on Database and Expert Systems Applications
Types and Effects for Asymmetric Cryptographic Protocols
CSFW '02 Proceedings of the 15th IEEE workshop on Computer Security Foundations
Analyzing the energy consumption of security protocols
Proceedings of the 2003 international symposium on Low power electronics and design
A proxy-based filtering mechanism for the mobile environment
A proxy-based filtering mechanism for the mobile environment
Multiresolution watermarking for images and video
IEEE Transactions on Circuits and Systems for Video Technology
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Digital watermarking is a process that embeds an imperceptible signature or watermark in a digital file containing audio, image, text or video data. The watermark is later 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. 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. Our results show that executing watermarking partitioned between the proxy and the handheld reduces the total energy consumed by 80% over running it only on the handheld and improves performance by over two orders of magnitude.