Imagine we’re using a basic signed credential like the one we’ve previously discussed. As in the constructions above, we’re going to ensure that the User picks a secret key K to embed within the signed credential.5 As before, the key K will powers a pseudorandom function (PRF) that can make pseudorandom “serial numbers” based on some input.
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At least 15 people have been killed and others injured after a Bolivian air force cargo plane crashed in the western city of El Alto, the country's authorities say.
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