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- W2384238770 abstract "Signcryption provides confidentiality and authenticity efficiently;it can be used to design compact communication protocol.Arbitration mechanism is used for settling disputes in signcryption,but the information that the judge gets also brings some security problems.This paper points out two problems:in some scheme,the arbitrator can decrypt all the signcryptions of a receiver while be gets some kinds of arbitration message;in another schemes,the arbitration mechanism cannot protect the integrity of plain- text.Analyze the two kinds of problems and concludes their reasons separately,we proposed a resolvent that can solve the two prob- lem by changing a secure arbitration message.Based on the attack and analysis,this paper proposes a secure arbitral signcryption (SASC)scheme and proves its IND-CCA2 security and UF-CMA security in random oracle model.Furthermore,SASC is a secure- ly arbitral signcryption scheme,it can protect the integrity of plaintexts by an arbitration message associated with plaintext;and the scheme can resist decryption attacks of arbitrator,even he gets the arbitration message.SASC does not increase computation nor communication overloads;it has no limitation to the length of plaintext,which makes SASC more convenient.Proofs and analysis show that SASC is an efficient and secure scheme." @default.
- W2384238770 created "2016-06-24" @default.
- W2384238770 creator A5066836550 @default.
- W2384238770 date "2007-01-01" @default.
- W2384238770 modified "2023-09-28" @default.
- W2384238770 title "Arbitral Security of Signcryptions and a Securely Arbitral Signcryption Scheme" @default.
- W2384238770 hasPublicationYear "2007" @default.
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