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Functional encryption is a type of public-key encryption, where the party that has access to a secret key can learn a function from that key, which is used to encrypt and decrypt messages.
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What are monotonic and non monotonic access structures in ABE ?
Simply speaking, if any superset of the set satisfying the access structure satisfies the access structure, we call the structure monotonic.
Let $\{1,2,...,n\}$ be a set of indices. An access structu …