Communications and Multimedia Security: 9th IFIP TC-6 - download pdf or read online

By L’ubica Staneková, Martin Stanek (auth.), Jana Dittmann, Stefan Katzenbeisser, Andreas Uhl (eds.)

ISBN-10: 3540287914

ISBN-13: 9783540287919

This publication constitutes the refereed complaints of the ninth IFIP TC-6 TC-11 foreign convention on Communications and Multimedia safeguard, CMS 2005, held in Salzburg, Austria in September 2005.

The 28 revised complete papers and thirteen two-page abstracts offered including four invited papers have been rigorously reviewed and chosen from 143 submissions. The papers are prepared in topical sections on utilized cryptography, DRM and e-commerce, media encryption, multimedia safety, privateness, biometrics and entry keep an eye on, community protection, cellular defense, and XML security.

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Read or Download Communications and Multimedia Security: 9th IFIP TC-6 TC-11International Conference, CMS 2005, Salzburg, Austria, September 19 – 21, 2005. Proceedings PDF

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Additional resources for Communications and Multimedia Security: 9th IFIP TC-6 TC-11International Conference, CMS 2005, Salzburg, Austria, September 19 – 21, 2005. Proceedings

Example text

Most importantly, the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols are used to authenticate the Web server and to establish a cryptographically secure channel between the browser acting on behalf of the user and the Web server. The user is typically authenticated with one or several of the following mechanisms: user identification (ID) and password, transaction authentication number (TAN), one-time password, challenge-response mechanism, or public key certificate. The corresponding authentication information is transmitted over the SSL/TLS channel.

M − 2 . yj if j = m − 1, m The second part of the broadcast is defined as follows: for j = 1, 2 2 Bj2 = {(k, ψ(k) Pj )}k∈Wj and for j ≥ 3, Bj2 = Bj−1 ∪ {(k, ψ(k) Pj )}k∈Wj . Sponsored Addition of Users. If a user ∈ Gj wants to sponsor a user i ∈ Gj for session j, then he sends ( , ψ( ) Pj ψ(i)) privately to i (computed from its personal key: ( , ψ( ) Pj )). For lack of space we do not include the proof of the following result: the proposed scheme is a (R, Γ, S)-self-healing key distribution scheme with sponsorization for R = 2U − Γ and S = 2U − Γ .

0). Set-Up. Let G1 ⊂ U. The group manager randomly chooses t × t matrices P1 , . . , Pm and session keys K1 , . . , Km ∈ GF (q). For each j = 1, . . , m the group manager computes the vector zj = Kj v + ψ(D) Pj ∈ GF (q)t . The group manager sends privately to user i ∈ G1 the personal key Si = (ψ(i) P1 , . . , ψ(i) Pm ) ∈ GF (q)tm . Note that if we use a linear secret sharing scheme in which a user i is associated with mi ≥ 1 vectors, then his secret information Si consists of mi vectors of tm components.

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Communications and Multimedia Security: 9th IFIP TC-6 TC-11International Conference, CMS 2005, Salzburg, Austria, September 19 – 21, 2005. Proceedings by L’ubica Staneková, Martin Stanek (auth.), Jana Dittmann, Stefan Katzenbeisser, Andreas Uhl (eds.)


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