Before we get into the weeds of building anonymous credentials, it’s worth considering the obvious solution. What we want is simple: every user’s credential should be indistinguishable when “shown” to the resource. The obvious question is: why doesn’t the the issuer give a copy of the exact same exact credential to each user? In principle this solves all of the privacy problems, since every user’s “show” will literally be identical. (In fact, this is more or less the digital analog of the physical wristband approach.)
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They questioned whether the building had been adequately fortified, telling CBS News a trailer was being used as an office, with 12ft (3.7m) steel-reinforced concrete barriers to shield it.
该系统围绕几个关键模块构建，这些模块无缝协作：。业内人士推荐WPS下载最新地址作为进阶阅读