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As wireless LANs as well as the high-speed broadband Internet service are widely deployed, the VoIP service has become popular. Generally, a lot of commercial VoIP services use SIP and RTP for signaling and voice transport protocols. Most commercial VoIP service providers employ only simple security functions such as basic authentication without packet encryption because of fast implementation and...
Increase in healthcare awareness has raised the number of subscriptions for e-Healthcare applications. Consequently e-Healthcare application providers are adopting Cloud computing to handle immense processing load and to reduce service delivery cost. Identity management has been an issue which hinders in adoption of e-Healthcare applications, due to sensitivity of the data involved in it. Existing...
Recently one of sender authentication methods called SPF is getting popularized as an anti-spam technology. However, SPF has a problem in terms of that the forwarded e-mails can not be authenticated correctly. In this paper, we propose a solution for SPF on forwarded e-mails by tracing recipient addresses in "Received" fields of e-mail header without customization on forwarding MTA. The...
This paper proposes a 2-Level eXclusive-OR Chain-based μTESLA (Timed Efficient Stream Loss-tolerant Authentication) broadcast authentication protocol, with advantages, such as a lower computation complexity and less communication overhead, compared to the μTPCT (μTESLA Parameters Hash Chain Merkle Tree)-based μTESLA. It also is tolerant to the long-term data loss. Additionally, we show the security...
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