Download Advanced Computer Science and Information Technology: Second by Takafumi Fukunaga (auth.), G. S. Tomar, Ruay-Shiung Chang, PDF

By Takafumi Fukunaga (auth.), G. S. Tomar, Ruay-Shiung Chang, Osvaldo Gervasi, Tai-hoon Kim, Samir Kumar Bandyopadhyay (eds.)

Advanced technology and know-how, complicated communique and Networking, info defense and coverage, Ubiquitous Computing and Multimedia Appli- tions are meetings that allure many educational and pros. The target of those co-located meetings is to collect researchers from academia and in addition to practitioners to percentage principles, difficulties and recommendations when it comes to the multifaceted features of complicated technological know-how and expertise, complicated conversation and networking, details protection and coverage, ubiquitous computing and m- timedia purposes. This co-located occasion incorporated the subsequent meetings: AST 2010 (The moment overseas convention on complex technological know-how and Technology), ACN 2010 (The moment overseas convention on complex conversation and Networking), ISA 2010 (The 4th foreign convention on info safeguard and coverage) and UCMA 2010 (The 2010 foreign convention on Ubiquitous Computing and Multimedia Applications). we wish to precise our gratitude to the entire authors of submitted papers and to all attendees, for his or her contributions and participation. We think within the desire for carrying on with this venture sooner or later. We recognize the good attempt of the entire Chairs and the individuals of advisory forums and application Committees of the above-listed occasions, who chosen 15% of over 1,000 submissions, following a rigorous peer-review procedure. distinct thank you visit SERSC (Science & Engineering examine aid soCiety) for aiding those - positioned conferences.

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Advanced Computer Science and Information Technology: Second International Conference, AST 2010, Miyazaki, Japan, June 23-25, 2010. Proceedings

Complex technology and know-how, complicated verbal exchange and Networking, info defense and insurance, Ubiquitous Computing and Multimedia Appli- tions are meetings that allure many educational and pros. The aim of those co-located meetings is to assemble researchers from academia and in addition to practitioners to proportion rules, difficulties and ideas with regards to the multifaceted points of complicated technology and expertise, complicated verbal exchange and networking, details safeguard and coverage, ubiquitous computing and m- timedia purposes.

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Additional info for Advanced Computer Science and Information Technology: Second International Conference, AST 2010, Miyazaki, Japan, June 23-25, 2010. Proceedings

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An adversary A can find out Ci = g uri for a random ri and X = g v A−d for given g u and g v for unknown u, v. If A succeeds on finding Ci and Cj , then Ki /Kj = g uv(rj −ri ) is also obtainable. By the way, this contradicts the CDH assumption. Discussion. The security of the proposed protocol against active adversary dependes on the strength of HMQV. The key generation of the basic protocol is the same with that of HMQV which is proved secure in Canetti-Krawczyk model. In the basic protocol, because an adversary does not know the private key of the sender (or chooser), it is not possible to transfer (or retrieve) meaningful message.

The sender pre-computes B and uses it in the key generation for all transfers. As a result, the additional cost is reduced from m/2 modular exponentiation to 1/2 for many simultaneous oblivious transfers. Message Authentication using Oblivious Keys. We can provide message authentication very efficiently based on the above improvement. The basic tool we use for integrity is Message Authencation Code(MAC) which requires a shared key between a sender and a chooser in advance. The shared key is usually obtained from Authenticated Key Exchange(AKE) protocol.

In: Bellare, M. ) CRYPTO 2000. LNCS, vol. 1880, pp. 36–54. Springer, Heidelberg (2000) 9. : Efficient oblivious transfer protocols. In: SODA 2001: Proceedings of the twelfth annual ACM-SIAM symposium on Discrete algorithms, Philadelphia, USA, pp. 448–457. Society for Industrial and Applied Mathematics (2001) 10. : Oblivious Polynomial Evaluation. SIAM J. Comput. 35(5), 1254–1281 (2006) 11. : How to exchange secrets by oblivious transfer. Technical report, Aiken Computation Laboratory: Harvard University (1981) 12.

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