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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Apple has promised a “big week” for the company, which includes an in-person event for press and creators on March 4. But it didn’t exactly wait until Wednesday to get things started. The news started on Monday with the announcements of the iPhone 17e and M4-powered iPad Air.
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