Chaum’s idea was to break the linkage between the issuance and usage of a credential. This means that when Alice shows her credential to the website, all the site learns is that Alice has been given a valid credential. The site should not learn which issuance flow produced her the credential, which means it should not learn her exact ID; and this should hold even if the website colludes with (or literally is) the issuer of the credentials. The result is that, to the website, at least, Alice’s browsing can be unlinked from her identity. Imn other words, she can “hide” within the anonymity set of all users who obtained credentials.
在阿里押注千问之前，AI这条线上最能打的就是夸克。
，详情可参考PDF资料
Individual sentences carry limited info, but 85% accuracy per sentence means we can be highly confident about longer texts. This far exceeded my expectations. Old-school alchemy still rules—way better than those dumb online tools that just ask an LLM, “Is this text AI-generated?”
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