Strong designated verifier signature schemes rely on sender-privacy to hide the identity of the creator of a signature to all but the intended recipient. This property can be invaluable in, for example, the context of deniability, where the identity of a party should not be deducible from the communication sent during a protocol execution. In this work, we explore the technical definition of sender-privacy and extend it from a 2-party setting to an n-party setting. Afterwards, we show in which cases this extension provides a stronger security and in which cases it does not.

翻译：强有力的指定核查人签字计划依靠发件人-权利保密,将签字制作人的身份隐藏在除预定收件人外的所有人,这种财产在可否认性方面可能是非常宝贵的,例如,当事一方的身份不应从执行协议期间发出的通信中扣除,在这项工作中,我们探讨发件人-权利的技术定义,并将它从两方设置扩大到n方设置。