Abstract—Recently, Bertino, Shang and Wagstaff proposed a time-bound hierarchical key management scheme for secure broadcasting. Their scheme is built on elliptic curve cryptography and implemented with tamper-resistant devices. In this paper, we present two collusion attacks on Bertino-Shang-Wagstaff scheme. The first attack does not need to compromise any decryption device, while the second attack requires to compromise single decryption device only. Both attacks are feasible and effective.



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hi,sir ,madam
i am final year mechanical engineering student in ethiopia and i would like to do my project on reuse of plastic waste in road construction and detail description of what kinda of machine it will use for the manufacturing of part design of the machine i would like to know such types of data in order to start my project it will be a greater help if you could assist me in this thank you.
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STUDENT NAME:JULIUS J. NYINDA
JULIUS J. NYINDA

SUPERVISOR: N.G. NZOWA

INTRODUCTION
A water meter is a device that is used to measure the volume of water usage.
A prepaid water control circuit system is a control mechanism that allows water usage when there is a certain amount of prepaid units in the control circuit system and terminates water usage when the units are over.
In such a system, a customer purchases a separate prepaid credit card with values o ....etc

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Meanwhile, Philip, with about 1,500 warriors, wandered over the land to arouse the savages to a general war of extermination. Then he made his way to the valley of the Connecticut, spreading destruction from Springfield, Mass., north to the Vermont line. Brookfield was fired, Deerfield burnt, and Hadley surprised, but at the last place the Indians were severely checked and repelled by the villagers under the leadership of Col.
Nonetheless, Should you view web based oftentimes, For example you're first of all distributor based in in that you ....etc

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plz send me about waste of plastic in road construction for ppt's

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i'am mounika.i'am studyinying in b.tech final year in bharat institute of science and technology for women. i'am giving technical seminar on ieee project named Supporting Pattern Matching Queries over Trajectories on Road Networks. i don't have any clear idea on this topic.. so please can anyone help me regarding this.i want a ppt on this topic. so please help me out. its my sincere request to every one. please mail me ppt to my mail id. ....etc

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what are the para nos. 2.1 to 2.7.4 of guidelines. ....etc

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An Efficient Time-Bound Hierarchical Key Management Scheme for Secure Broadcasting-IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING, VOL. 5, NO. 2,
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Abstract—
In electronic subscription and pay TV systems, data can be organized and encrypted using symmetric key algorithms according to predefined time periods and user privileges and then broadcast to users. This requires an efficient way of managing the encryption keys. In this scenario, time-bound key management schemes for a hierarchy were proposed by Tzeng and Chien in ....etc

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The transmission energy required for a wireless communication increases superlinearly with the communication distance. In a mobile wireless network, nodal movement can be exploited to greatly reduce the energy required by postponing communication until the sender moves close to a target receiver, subject to application deadline constraints. In this paper, we characterize the fundamental performance limit, namely the lower bound expected communication distance, achievable by any postponement algorithm within given deadline constraints. Our analy ....etc

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