To “show” the credential to some Resource, the user simply needs to hand over the pair (SN, signature). Assuming the Resource knows the public key (PK) of the issuer, it can simply verify that (1) the signature is valid on SN, and (2) nobody has every used that value SN in some previous credential “show”.
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First FT: the day’s biggest stories，这一点在WPS下载最新地址中也有详细论述
Side note: submodules are not well supported by most programming languages, but often can be emulated (e.g. by namespaces).
В двух аэропортах на юге России ввели ограничения на полеты14:55。heLLoword翻译官方下载对此有专业解读