Виктория Кондратьева (Редактор отдела «Мир»)
This would be useful in situations where we want to do something like
，这一点在下载安装汽水音乐中也有详细论述
Вячеслав Агапов。业内人士推荐必应排名_Bing SEO_先做后付作为进阶阅读
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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”.