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”.
在冬奧前夕，谷愛凌接受了《Vogue》和《時代》雜誌等媒體專訪，但真正可能進一步激化這項運動頂尖選手間競爭關係的，卻是瑞士媒體的報導。
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Фото: Belkin Alexey / news.ru / Globallookpress.com
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