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Abstract
In mobile ad hoc networks, due to unreliable wireless
media, host mobility and lack of infrastructure, providing secure
communications is a big challenge in this unique network environment.
Usually cryptography techniques are used for secure
communications in wired and wireless networks. The asymmetric
cryptography is widely used because of its versatileness (authentication,
integrity, and confidentiality) and simplicity for key distribution.
However, this approach relies on a centralized framework
of public key infrast ....etc

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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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Presented By:
Qijun Gu, Peng Liu, Wang-Chien Lee, and Chao-Hsien Chu
Abstract
Wireless broadcast is an effective approach to disseminate data to a number of users. To provide secure access to data in wireless broadcast services, symmetric key-based encryption is used to ensure that only users who own the valid keys can decrypt the data. Regarding various subscriptions, an efficient key management to distribute and change keys is in great demand for access control in broadcast services. In this paper, we propose an efficient key man ....etc

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i want ppt of enabling secure and efficient ranked keyword search over outsourced cloud data
enablingng secure and efficient ranked keyword search over outsourced cloud data ppt ....etc

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PLEASE SEND ME DOCUMENTATION FOR THIS PROJECT Secure Overlay Cloud Storage with Access Control and Assured Deletion ....etc

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to get information about the topic achieving secure scalable and fine grained data access control in cloud computing full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-achieving-secure-scalable-and-fine-grained-data-access-control-in-cloud-computing

http://seminarsprojects.net/Thread-achieving-secure-scalable-and-fine-grained-data-access-control-in-cloud-computing--23161 ....etc

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A Secure and Efficient Conference Key Distribution System

A practical interactive conference key distribution system based on public keys is presented in this article. Under the assumption that the Diffie-Hellman problem is intractable, the system is proven secure. The users are authenticated by the system and they can compute their own conference keys. The number of interactions required is independent of the number of users. The same amount of computation and communication is performed by all the users involved.
The secret keys mu ....etc

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An Efficient Time-Bound Hierarchical Key Management Scheme for Secure Broadcasting-IEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING, VOL. 5, NO. 2,
-java
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 20 ....etc

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