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”.
На помощь российским туристам на Ближнем Востоке ушли миллиарды рублей20:47
。wps下载对此有专业解读
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