Fair Exchange of Secrets
Fair Exchange of Secrets
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DOI:
10.1007/3-540-39568-7_34
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发表时间:
1984-08
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影响因子:
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通讯作者:
Tom Tedrick
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文献类型:
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作者:
Tom Tedrick
We consider two problems which arose in the context of “The Exchange of Secret Keys” (see [1]).(1).In the original protocol, one party may halt the exchange and have a 2 to 1 expected time advantage in computing the other party’s secret. To solve this problem, when there is a particular point in the exchange where this time advantage may be critical, we presented at CRYPTO 83 (see [5]), a method for exchanging “fractions” of a single bit.In this paper we extend the method so as to apply it to all bits to be exchanged, and show how it can be used in a more abstract setting (as in [2]).(2).We also present a solution to the problem of how to ensure a fair exchange of secrets when one party in the exchange is “risk seeking”, while the other is “risk-adverse”.