封闭阈下信道的若干新型签名方案

1983年，Simmons[1]提出了阈下信道的概念，并阐述了如何在一个可认证的消息中隐藏一个秘密信息。1985年和1994年，Simmons分别描述了如何利用EIGamal签名方案和DSS建立阈下信道并指出了阈下信道的若干应用[2-5]，1998年笔者在参考文献[6]中建立了三个封闭阈下信道的签名方案。该文又利用有向签名、代理签名和多重签名方法建立了三个封闭阈下信道签名的新型方案。

Some New Signature Schemes on Sealing Subliminal Channals

Simmons[1] introduced the notion of subliminal channel in 1983,by demons trating how to hide the secret information inside a authenticated message.In 1985 and 1994,Simmons[2-5]showed how to embed a subliminal channel in digital signatures created using the EIGamal signature scheme and DSS.Three signature schemes on sealing subliminal channals were proposed by paper [6] in 1998.This paper proposes three new subliminal-free signature schemes by using protected signature,proxy signature and multisignature signature.