Download Advanced Communications and Multimedia Security: IFIP TC6 / by Chris J. Mitchell, Namhyun Hur (auth.), Borka Jerman-Blažič, PDF

By Chris J. Mitchell, Namhyun Hur (auth.), Borka Jerman-Blažič, Tomaž Klobučar (eds.)

Advanced Communications and Multimedia Security provides a cutting-edge assessment of present views in addition to the most recent advancements within the zone of communications and multimedia safeguard. It examines requisites, matters and suggestions pertinent to securing info networks, and identifies destiny security-related examine demanding situations. a large spectrum of subject matters is mentioned, together with:
-Applied cryptography;
-Communication platforms safety;
-Applications protection; cellular defense;
-Distributed platforms protection;
-Digital watermarking and electronic signatures.

This quantity includes the lawsuits of the 6th Joint operating convention on Communications and Multimedia defense (CMS'02), which used to be subsidized through the overseas Federation for info Processing (IFIP) and held in September 2002 in Portoroz, Slovenia. It constitutes crucial studying for info defense experts, researchers and pros operating within the quarter of desktop technological know-how and verbal exchange systems.

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Read or Download Advanced Communications and Multimedia Security: IFIP TC6 / TC11 Sixth Joint Working Conference on Communications and Multimedia Security September 26–27, 2002, Portorož, Slovenia PDF

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Extra resources for Advanced Communications and Multimedia Security: IFIP TC6 / TC11 Sixth Joint Working Conference on Communications and Multimedia Security September 26–27, 2002, Portorož, Slovenia

Sample text

In cases, such as in IP communication, we may have a stream of independent messages to be authenticated. Neither typical digital signatures provides efficient solution, nor MAC provides enough security service. Therefore, new techniques are required to provide both security and efficiency. The other motivation is the requirement by the intermediate nodes in IP network for a technique to authenticate the packets in their transitions from source destination. IPSec [12] is a security mechanism designed to provide security services for IP communication.

But the method needs the commitments to all the content of the digital copy. So the computation is prohibitive for realistic data. Other comparisons can also be found in the related work section. Here we'll show the computations and storage requirements in our framework. Computations: Except for the computations in embedding and extracting, the merchant will do symmetric encryptions for all the subblocks two times(because there are 2 versions for each block). But for each item to be sold, the merchant need only do these operations once for all buyers.

K}. To find hash value of a message, it is not necessary to know all polynomials Ui. For a message m E Mi, it is sufficient to know two polynomials only, namely, Ui and Uk. In general, sibling intractable hashing with kr colliding messages can be defined as HW) = H(k) 0 HW- 1 ) for r > 2. Similarly, to compute a hash value for a single message, it is necessary to learn r polynomials of degree k. The polynomials Ui,j(X) are in fact arranged in a tree structure. The leaves of the tree are Ul,j for j = 1, ...

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