An Improvement of the Ateniese's Verifiable Encryption Protocol

摘要

Patikrinamas kriptavimas gali buti naudojamas labai efektyviu skaitmeniniu parašu apsikeitimo protokolu sudarymui. Tokie protokolai gali buti naudojami kontraktu skaitmeniniam pasirašymui intemete. Šiame straipsnyje pristatomas efektyvus skaitmeniniu parašu patikrinamo kriptavimo protokolas, kuriš pagerina Ateniese patikrinamo kriptavimo schemos sauguma ir efektyvuma.%Verifiable encryption is a primitive that can be used to build extremely efficient fair exchange protocols where the items exchanged represent digital signatures. Such protocols may be used to digitally sign contracts on the Internet. This paper presents an efficient protocol for verifiable encryption of digital signatures that improves the security and efficiency of the verifiable encryption scheme of Ateniese. Our protocol can be applied to group signatures, key escrow and publicly verifiable secret and signature sharing to prove the fairness.