“Many believe that data must be stored within the EU to be protected. But under GDPR it does not matter where the server is located – as long as the country meets the EU’s requirements. If it does not, data may not be sent there”.
In real systems we do need to be a bit careful to ensure that the key K is chosen honestly and at random, to avoid a user duplicating another user’s key or doing something tricky. Often real-world issuance protocols will have K chosen jointly by the Issuer and User, but this is a bit too technically deep for a blog post.
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Each FD has a verification plan, however Claude tends to find bugs with its own code when prompted to double check its work, so I kept typing the same things over and over:
星巴克玫瑰 20 系列回归，160+ 主题门店上线