D. A. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An integrated solution for secure group communication in wide-area networks. Proceedings of ISCC 2001.  Home/Search   Document Details and Download   Summary   Related Articles   Check

.... of the parties may be sending data to the multicast group [13] Examples of such applications include replicated server [23] audio video conferencing [22] and collaborative tools [2] Several papers [3,20,21,30] have addressed this scenario and one of its incarnations is the system ooeered in [1]. However these protocols, and this existing system, are based on or use an informal approach and do not rely on proofs of security. These approaches are several years later often found to be AEawed and, indeed, weaknesses have already been discovered for some protocols [25] One way to improve ....

....front, the question that may be raised is what happens when several groups merge to form a larger group. A scenario that occurs in practice when a network failure partitions the multicast group in several disjoint sub groups which will later need to merge when the network is be repaired [1]. The most eOEcient way in terms of computation and communication is to add players from the smaller sub groups into the largest of the merging sub groups. That is, UGC is chosen as the player with the highest index in the largest merging sub group and the players from the smaller sub groups are ....

Agarwal, D. A., Chevassut, O., Thompson, M. R., Tsudik, G.: An integrated solution for secure group communication in wide-area networks. In Proc. of 6 IEEE Symposium on Computers and Communications (July 2001) IEEE Computer Societypp. 2228.

.... of the parties may be sending data to the multicast group [13] Examples of such applications include replicated server [22] audio video conferencing [21] and collaborative tools [2] Several papers [3, 19, 20, 29] have addressed this scenario and one of its incarnations is the system offered in [1]. However these protocols, and this existing system, are based on or use an informal approach and do not rely on proofs of security. These approaches are several years later often found to be flawed and, indeed, weaknesses have already been discovered for some protocols [24] One way to improve ....

....front, the question that may be raised is what happens when several groups merge to form a larger group. A scenario that occurs in practice when a network failure partitions the multicast group in several disjoints sub groups which will later need to merge when the network is be repaired [1]. The most efficient way in terms of computation and communication is to add players from the smaller sub groups into the largest of the merging sub groups. That is, UGC is chosen as the player with the highest index in the largest merging sub group and the players from the smaller sub groups are ....

D. A. Agarwal, O. Chevassut, M.R. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In Proc. of 6th IEEE Symposium on Computers and Communications, 2001.

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D. A. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In Proc. of 6th Symposium on Computers and Communications. IEEE Press, July 2001.

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D.A. Agarwal, O. Chevassut, M.R. Thompson and G. Tsudik, "An Integrated Solution for Secure Group Communication in Wide-Area Networks," Proceedings IEEE Symposium on Computers and Communications, July 2001.

....and difficult to scale. Instead, secure and reliable multicast is a natural underlying communication layer for a collaboration environment. An instantiation of secure and reliable multicast communication is provided by a combination of the InterGroup protocols [6] and the Secure Group Layer (SGL) [1]. InterGroup is an extension of the TCP concept to the multi party case that provides membership services, reliable message delivery, and ordered message delivery. The InterGroup protocols are designed to scale to widearea environments such as the Internet. SGL is an extension of the SSL concept ....

D.A. Agarwal, O. Chevassut, M.R. Thompson, G. Tsudik, "An Integrated Solution for Secure Group Communication in Wide-Area Networks", Proceedings of the 6th IEEE Symposium on Computers and Communications, Hammamet, Tunisia, July 3-5, 2001, pp 22-28.

....their instances erase any internal data when terminating. Existing twoparty protocols (e.g. SSL and IPsec) make this assumption. We see the additional security goal of dealing with dishonest players (like verifiable contributory [2] as important in some environments but less important in others [1]. This paper provides major contributions to the solution of the group Diffie Hellman key exchange problem. We first present a formal model to help manage the complexity of definitions and proofs for the authenticated group Diffie Hellman key exchange. A model where a process controlled by a ....

.... participants involved in the execution of AKE1 (e.g. current scientific collaborations involve up to 20 participants) Moreover, because of the network latency and computation cost, the practicability of AKE1 becomes an issue with groups larger than 40 members operating in a wide area environment [1]. We may then ask how the security proof is meaningful in practice. First, one has to be clear that such a proof of security is much better than no proof at all and that AKE1 is the first AKE scheme to have a proof of security. Second, several techniques can be used to carry out a proof which ....

D. A. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In Proc. of 6th Symposium on Computers and Communications. IEEE Press, July 2001.

....and removed from the process s message bu er. 15 9 Securing a Group Communication System When communicating over an open network like the Internet, security is essential to allow application components to reliably communicate in the face of adversaries. The Secure Group Layer protocol (SGL) [1] adapts the notion of view based group communication to the context of security. SGL provides distributed applications with a platform they can use to achieve reliable and secure communication among distributed components. SGL is a security protocol for reliable multicast communications designed ....

D. A. Agarwal, O. Chevassut, M.R. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In Proc. of 6th IEEE Symposium on Computers and Communications, 2001.

....instances erase any internal data when terminating. Existing two party protocols (e.g. SSL and IPsec) make this assumption. We see the additional security goal of dealing with dishonest play ers (like verifiable contributory [2] as important in some environments but less important in others [1]. This paper provides major contributions to the solution of the group Diffie Hellman key exchange problem. We first present a formal model to help manage the complexity of definitions and proofs for the authenticated group DiffieHellman key exchange. A model where a process controlled by a ....

.... participants involved in the execution of AKE1 (e.g. current scientific collaborations involve up to 20 participants) Moreover, because of the network latency and computation cost, the practicability of AKE1 becomes an issue with groups larger than 40 members operating in a wide area environment [1]. We may then ask how the security proof is meaningful in practice. First, one has to be clear that such a proof of security is much better than no proof at all and that AKE1 is the first AKE scheme to have a proof of security. Second, several techniques can be used to carry out a proof which ....

D. A. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In Proc. of 6th Symposium on Computers and Communications. IEEE Press, July 2001.

....of SGL when one member located at Argonne joins the group of size n Gamma 1. 6 The analysis of Fig 6 is straightforward from the above explanation and is omitted to lack of space. The analysis of Fig 6 and the performance of SGL when a leave event can be found in the full version of this paper [1]. The emphasis in building this first prototype was not on performance. A significant performance improvement can be realized by exploiting faster platforms to speed up the cryptographic operations such as exponentiation and signature, but also from an extensive study implementation of IKA.1 ....

D. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An Integrated Solution for Secure Group Communication in Wide-Area Networks. In IEEE Symposium on Computers and Communications, July 2001. Full version of this paper, available from http://wwwitg. lbl.gov/SecGrpComm/Publications/publications.html.

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D. A. Agarwal, O. Chevassut, M. Thompson, and G. Tsudik. An integrated solution for secure group communication in wide-area networks. Proceedings of ISCC 2001.

No context found.

D.A. Agarwal, O. Chevassut, M.R. Thompson, G. Tsudik, "An Integrated Solution for Secure Group Communication in Wide-Area Networks", Proceedings of the 6th IEEE Symposium on Computers and Communications, Hammamet, Tunisia, July 3-5, 2001, pp 22-28.

No context found.

D.A. Agarwal, O. Chevassut, M.R. Thompson, G. Tsudik, "An Integrated Solution for Secure Group Communication in Wide-Area Networks", Proceedings of the 6th IEEE Symposium on Computers and Communications, Hammamet, Tunisia, July 3-5, 2001, pp 22-28.

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