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Decentralized security services.

Saxena, Nitesh.

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Decentralized security services.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Decentralized security services./
作者:	Saxena, Nitesh.
面頁冊數:	175 p.
附註:	Advisers: Gene Tsudik; Stanislaw Jarecki.
Contained By:	Dissertation Abstracts International67-08B.
標題:	Computer Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3229486
ISBN:	9780542828355

Decentralized security services.
Saxena, Nitesh.

Decentralized security services. - 175 p.

Advisers: Gene Tsudik; Stanislaw Jarecki.

Thesis (Ph.D.)--University of California, Irvine, 2006.

Next, we focus upon distributed RSA signature schemes. We present a practical key-recover attack on a recently proposed distributed (proactive) RSA signature scheme [LL00].

ISBN: 9780542828355Subjects--Topical Terms:

626642
Computer Science.

Decentralized security services.
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500 $a Advisers: Gene Tsudik; Stanislaw Jarecki.
500 $a Source: Dissertation Abstracts International, Volume: 67-08, Section: B, page: 4531.
502 $a Thesis (Ph.D.)--University of California, Irvine, 2006.
520 $a Next, we focus upon distributed RSA signature schemes. We present a practical key-recover attack on a recently proposed distributed (proactive) RSA signature scheme [LL00].
520 $a The main research contributions of this thesis can be summarized as follows:
520 $a We also present a novel provably secure cryptographic protocol for establishing security between devices connected with a low-bandwidth (e.g. 20-bits) authenticated channel, e.g., the visually authenticated channel in the above application.
520 $a We show how to establish secure communication two devices over a short-range wireless communication channel, using messages that are visually authenticated by the users of these devices.
520 $a Many security services, such as authentication and key management, rely on trusted third parties (TTPs) which provide a common root of trust, thereby enabling secure communication among all users. However, in many applications it is impractical to assume universally trusted TTPs. A broad class of such applications involves ad hoe groups, which include peer-to-peer systems (P2P), and mobile ad hoc networks (MANETs). Another class of applications which can benefit from avoidance of a single centrally trusted TTP are critical online services, such as certification, revocation and time-stamping. Centralized operation of such security services is undesirable because it leads to a single point of failure.
520 $a The security needs of both ad hoc groups and the critical online services motivate research on decentralized security services. This thesis investigates three decentralized security services: (1) Establishment of secure communication between two human-operated devices, without relying upon a TTP, (2) Distributed digital signature schemes that enable any set of t + 1 group members to sign messages on behalf of the group, even in the presence of at most t faulty members, and (3) Secure membership management and secure communication in ad hoc groups.
520 $a Finally, we turn our attention to secure membership management and secure communication in ad hoc groups. Firstly, we propose an efficient protocol to securely extend an ad hoc group in a distributed manner. Compared to prior proposals [KZL+01, KLX+02, LZK+02, NTY03], our protocol has minimal communication requirements, namely a single round of asynchronous communication. Secondly, we present a scheme to speed-up secure communication in ad hoc groups. (Abstract shortened by UMI.)
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790 1 0 $a Tsudik, Gene, $e advisor
791 $a Ph.D.
792 $a 2006
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