Expressive CP-ABE with partially hidden access structures

  • Authors:
  • Junzuo Lai;Robert H. Deng;Yingjiu Li

  • Affiliations:
  • Singapore Management University, Singapore;Singapore Management University, Singapore;Singapore Management University, Singapore

  • Venue:
  • Proceedings of the 7th ACM Symposium on Information, Computer and Communications Security
  • Year:
  • 2012

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Abstract

At Eurocrypt 2005, Sahai and Waters [7] introduced the concept of attribute-based encryption (ABE). ABE enables public key based one-to-many encryption and is envisioned as a promising cryptographic primitive for realizing scalable and fine-grained access control systems. There are two kinds of ABE schemes [1], key-policy ABE (KP-ABE) and ciphertext-policy ABE (CP-ABE) schemes. This paper, our concern is on the latter.