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Existing solutions for securing multimedia streams such as RTP and Ogg, particularly those based on encrypting large portions of the data stream, are highly unscalable, and infringe on the Quality of Service (QoS) requirements as well. In this paper, we propose an efficient selective encryption technique for securing Ogg formatted VoIP/video streams. The proposed solution encrypts only 1.5% of the...
The evolution of wireless handsets from simple mobile phones to smart devices, capable of capturing multimedia information and accessing Internet, has enabled its users to share multimedia contents with other network-capable devices in the vicinity or across the Internet. However, multimedia contents may include private information that a user may share only if it is secure from sniffing and other...
Most of the existing MAC-layer protocols for sensor networks consider the status of wireless channel as time invariant. This assumption leads to reduced energy efficiency due to repeated transmissions particularly in nodes that experience deep channel fading. Multiple factors can be responsible for fading channels including other wireless activity in the surroundings, mobility, and geographic landscape...
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