human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Functional Encryption with Bounded Collusions via Multi-party Computation"):
  Abstract: We construct functional encryption schemes for polynomial-time computable functions secure against an a-priori bounded polynomial number of collusions. Our constructions require only semantically secure public-key encryption schemes and pseudorandom generators computable by small-depth circuits known to be implied by most concrete intractability assumptions. For certain special cases such as predicate encryption schemes with public index, the construction requires only semantically secure encryption schemes.

Along the way, we show a "bootstrapping theorem" that builds a q-query functional encryption scheme for arbitrary functions starting from a q-query functional encryption scheme for bounded-degree functions. All our constructions rely heavily on techniques from secure multi-party computation and randomized encodings.

Our constructions are secure under a strong simulation-based definition of functional encryption.

Includes members:
  Member "Fully secure functional encryption with general relations from the decisional linear assumption":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Attribute-Based Encryption for Commercial Content Distribution")
  Member "Candidate Indistinguishability Obfuscation and Functional Encryption for all Circuits":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Function Secret Sharing")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Mathematics