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首页> 外文会议>IASTED(International Association of Science and Technology for Development) International Conference on Communications and Computer Networks; 20051024-26; Marina del Rey(US) >AN UNCONDITIONALLY SECURE MULTI-ROUND REVOCATION SCHEME USING SECRET SHARING
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AN UNCONDITIONALLY SECURE MULTI-ROUND REVOCATION SCHEME USING SECRET SHARING

机译：使用秘密共享的无条件安全多轮撤消方案

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摘要

The revocation schemes are usually used for broadcast encryption and multicast key management. We present a Shamir's polynomial secret sharing based revocation scheme that enable many revocation rounds and has t~2 revocation capability in each round, where t is the degree of the secret sharing polynomial. Our scheme has some notable properties as compared with the other precious schemes: (1) Our multi-round revocation scheme is unconditionally secure other than computationally secure; (2) Our scheme promotes the revocation capability from t users to t~2 users in every round. The property can lower the degree of the secret sharing polynomial, which helps to reduce the communications overhead and the cost of the computations. (3) Our scheme is secure against any coalition of all the revoked users. In addition, our scheme also keeps the properties of the other revocation using secret sharing: O(1) personal keys storage, the communication overhead and the cost of the computation are independent of the size of the group.
机译：吊销方案通常用于广播加密和多播密钥管理。我们提出了一种基于Shamir多项式秘密共享的撤消方案，该方案可进行多次撤回，并且每轮具有t〜2撤消能力，其中t是秘密共享多项式的度。与其他珍贵方案相比，我们的方案具有一些显着的特性：（1）我们的多轮吊销方案是无条件安全的，而不是计算安全的； （2）我们的方案在每轮中将撤消能力从t个用户提升到t〜2个用户。该属性可以降低秘密共享多项式的次数，从而有助于减少通信开销和计算成本。 （3）我们的方案可确保所有被撤销的用户之间没有任何联盟。此外，我们的方案还使用秘密共享保留其他撤销的属性：O（1）个人密钥存储，通信开销和计算成本与组的大小无关。

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