On the Randomness Cost of Linear Secure Computation : (Invited Presentation)

On the Randomness Cost of Linear Secure Computation : (Invited Presentation)
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关于线性安全计算的随机性成本:(特邀演讲)

DOI:
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发表时间:
2019
期刊:
Annual Conference on Information Sciences and Systems
影响因子:
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通讯作者:
Shengli Fu
Shengli Fu
中科院分区:
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文献类型:
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作者:
Yanliang Zhou;Hua Sun;Shengli Fu

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我们考虑安全计算的问题,其中K个用户,每个持有一个独立的消息,希望计算的消息上的函数,而不透露任何额外的信息。我们证明了,要安全地计算消息的M个通用线性独立组合(即,对于线性安全计算问题),对于每个消息符号使用$\min\left(\left\lceil\frac{K-M-1}{2}\right\rceil,~M\right)$随机性符号就足够了(即,随机性成本不大于$\min\left(\left\lceil\frac{K-M-1}{2}\right\rceil,~M\right)$)。实现的随机性成本的最优性仍然是开放的。
We consider the problem of secure computation, where K users, each holding an independent message, wish to compute a function on the messages without revealing any additional information. We show that to compute M generic linear independent combinations of the messages securely (i.e., for the linear secure computation problem), it suffices to use $\min\left(\left\lceil\frac{K-M-1}{2}\right\rceil,~M\right)$ randomness symbols per message symbol (i.e., the randomness cost is no larger than $\min\left(\left\lceil\frac{K-M-1}{2}\right\rceil,~M\right)$). The optimality of the achieved randomness cost remains open.