Online-Untransferable Signatures
نویسندگان
چکیده
Non-transferability of digital signatures is an important security concern, traditionally achieved via interactive verification protocols. Such protocols, however, are vulnerable to “online transfer attacks” —i.e., attacks mounted during the protocols’ executions. In this paper, we show how to guarantee online untransferability of signatures, via a reasonable public-key infrastructure and general assumptions, without random oracles. Our untransferable signatures are as efficient as prior ones that provably provide weaker types of untransferabil-
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تاریخ انتشار 2008