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Decentralized Multi-client Functional Encryption

Asri, Mohammad | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55641 (02)
  4. University: Sharif University of Technology
  5. Department: Mathematical Sciences
  6. Advisor(s): Khazaii, Shahram
  7. Abstract:
  8. Functional encryption is a powerful primitive that enables selective computation on encrypted data. In a functional encryption scheme, a secret key is associated with a function. A user having ciphertext ct=enc(x) and private key sk_f for the function f can compute f(x) and learn nothing else. Functional encryption has two limitations: 1) parties should trust a third trusted party for the key generation process. 2) It does not support cases where the number of function inputs is more than one (potentially produced by different parties). In this thesis, it's have been reviewed works that have been done to eliminate limitations and generalize functional encryption to be more suitable for real word applications.

  9. Keywords:
  10. Functional Encryption ; Decentralized Functional Encryption ; Multi-Input Functional Encryption

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