An IBE Scheme with Verifiable Outsourced Key Generation Based on a Single Server
作者: Ting XueYanli RenGuorui Feng
作者单位: 1School of Communication and Information Engineering , Shanghai University , Shanghai 200444 , People's Republic of China
刊名: IETE Technical Review, 2018, Vol.35 (sup1), pp.97-105
来源数据库: Taylor & Francis Journal
DOI: 10.1080/02564602.2018.1515674
关键词: Identity-based encryptionPrivate key generationVerifiable outsourcing computation
原始语种摘要: ABSTRACT(#br)It is well known that private key generation is a computing bottleneck in an identity-based encryption scheme when a large number of users exist. Outsourcing computation can greatly reduce the users’ computational cost, but the existing schemes are all based on two servers, which are not feasible in the real cloud environment. In this paper, we first propose a scheme where the PKG outsources the task of private key generation to a single server, and the results can be verified effectively. Moreover, PKG only needs to execute 1 modular exponentiation, so it is more efficient when compared with previous schemes. Meanwhile, we prove the indistinguishability of the ciphertext and verifiability of the outsourcing results in the security model. Finally, the proposed algorithm is...
全文获取路径: Taylor & Francis  (合作)
影响因子:0.705 (2012)

  • encryption 加密
  • exponentiation 乘方
  • verifiability 可检验性
  • computation 计算
  • generation 世代
  • PKG PacKaGe
  • computing 计算
  • ciphertext 加密电文
  • users 使用者
  • bottleneck 瓶颈