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Matthew Green talks about this in his blog on the subject: https://blog.cryptographyengineering.com/2026/03/02/anonymous-credentials-an-illustrated-primer/#:~:t
by miloignis 5mo ago
Matthew Green talks about this in his blog on the subject: https://blog.cryptographyengineering.com/2026/03/02/anonymous-credentials-an-illustrated-primer/#:~:text=clone%20wars https://blog.cryptographyengineering.com/2026/03/02/anonymou...
The two methods that seem feasible are making it hard to copy (putting it in the secure element in your phone, for example, which I don't love) or doing tokens that can only be used a limited number of times per day, like in : https://eprint.iacr.org/2006/454 https://eprint.iacr.org/2006/454
- angry_octet 5mo agoIf it's a rolling cert with rate limits I think that solves the problem, particularly if access to the client cert allows the client to make a financial transaction, e.g. of $100. So you wouldn't share the client cert with randoms because they would just take your $100 and you'd be blocked. Finally, a way to use blockchain for good.
- tardedmeme 5mo agoSo your bank says sorry, only 3 porns a day for you?
- angry_octet 5mo agoWhere did you read that? Not in my post.
- tardedmeme 5mo agoWhat rate limit would you use?
- angry_octet 5mo agoMaybe 256 authentications a day.
- tardedmeme 5mo agoSo only 256 porns a day for you. If you access a 257th porn site, your bank will know about it!
- angry_octet 5mo agoWhy would my bank know about it?
- tardedmeme 5mo agoWhoever is verifying my identity.
- angry_octet 5mo ago[dead]
- angry_octet 5mo agoThis scheme does coincidentally introduce the ability to pay for things anonymously using porno tokens, part of a government mandated crypto currency.