Information and Communications Technology and Policy

Information and Communications Technology and Policy

Information and Communications Technology and Policy ›› 2021, Vol. 47 ›› Issue (7): 82-86.doi: 10.12267/j.issn.2096-5931.2021.07.012

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A survey of threshold homomorphic encryption application in privacy preserving computing

CHAI Di   

  1. Clustar, Shenzhen 518057, China
  • Online:2021-07-15 Published:2021-08-01

Abstract: As a solution of secure data cooperation between multi-parties, privacy preserving computing is attracting much attention in recent years. Homomorphic Encryption (HE) is one of the most important technologies in privacy preserving computing. However, most HE algorithms only have one pair of secret key and public key, and the computations between ciphertexts encrypted by different public keys are not supported. Such only-one-secret-key character brings lots of trouble to the HE application in privacy preserving computation. Recently, a threshold HE solution attracts much attention, and it supports more than one secret key. This paper introduces the threshold HE method, then show its application in privacy preserving computation.

Key words: privacy preserving computing, application of privacy preserving computing, homomorphic encryption, threshold homomorphic encryption, multikey homomorphic encryption