Efficient Fuzzy Identity-Based Encryption Scheme

효율적인 퍼지 아이디 기반 암호화 방법

  • 이광수 (고려대학교 정보경영공학전문대학원) ;
  • 이동훈 (고려대학교 정보경영공학전문대학원)
  • Published : 2008.08.29

Abstract

In this paper, we construct an efficient fuzzy identity-based encryption scheme in the random oracle model. The fuzzy identity-based encryption is an extension of identity-based encryption schemes where a user's public key is represented as his identity. Our construction requires constant number of bilinear map operations for decryption and the size of private key is small compared with the previous fuzzy identity-based encryption of Sahai-Waters. We also presents that our fuzzy identity-based encryption can be converted to attribute-based encryption schemes.