Anonymous spatial encryption under affine space delegation functionality with full security

Mingwu Zhang, Bo Yang, Tsuyoshi Takagi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Anonymous encryption provides the decrypter's identity privacy preservation as well as plaintext confidentiality. Spatial encryption, which is a kind of functional encryption, provides a generalized framework for special property encryption schemes such as broadcast encryption, predicate encryption, forward secure encryption, (hierarchical) identity-based encryption, delegatable attribute-based encryption etc. In this paper, we propose an anonymous spatial encryption scheme that deploys an affine subspace delegation mechanism. Our proposed scheme captures the message confidentiality, recipient anonymity, adaptive security, partial-order delegation and short ciphertext, simultaneously. To the best of our knowledge, the proposed scheme is the first anonymous spatial encryption that provides the anonymity property in adaptive security model, whose construction is based on a dual system encryption mechanism in bilinear composite-order groups. We also give a conversion construction to move into a prime-order setting with canceling property, whose security is based on the Decision Linear Problem. Finally, we provide a transformation methodology to obtain a CCA-secure scheme that combines a one-time signature, delegation functionality and the CPA-secure scheme.

Original languageEnglish
Pages (from-to)715-730
Number of pages16
JournalInformation Sciences
Volume277
DOIs
Publication statusPublished - Sep 1 2014

Fingerprint

Delegation
Affine Space
Encryption
Cryptography
Confidentiality
Anonymity
Functionality
Privacy Preservation
Broadcast Encryption
Identity-based Encryption
Security Model
Partial Order
Predicate
Signature
Attribute
Composite
Subspace

All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Theoretical Computer Science
  • Computer Science Applications
  • Information Systems and Management
  • Artificial Intelligence

Cite this

Anonymous spatial encryption under affine space delegation functionality with full security. / Zhang, Mingwu; Yang, Bo; Takagi, Tsuyoshi.

In: Information Sciences, Vol. 277, 01.09.2014, p. 715-730.

Research output: Contribution to journalArticle

Zhang, Mingwu ; Yang, Bo ; Takagi, Tsuyoshi. / Anonymous spatial encryption under affine space delegation functionality with full security. In: Information Sciences. 2014 ; Vol. 277. pp. 715-730.
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