Novel Inner Product Encryption Resistant to Partial Collusion Attacks

Yuqiao Deng; Ge Song

Paper 2016/1030

Novel Inner Product Encryption Resistant to Partial Collusion Attacks

Yuqiao Deng and Ge Song

Abstract

Inner product encryption (IPE) is a new cryptographic primitive initially proposed by Abdalla et al. in 2015. IPE can be classified into public-key IPE and secret-key IPE. The currently proposed PK-IPE schemes can-not resist the following collusion attack: an invalid user that holds no private key can ”buy” a combined key generated from multiple collusion adversaries, and the user can use this private key to decrypt a ciphertext. Furthermore, the user should not let the collusion adversaries know the ciphertext, and the collusion adversaries should not let the user learn their private keys. We present a new PK-IPE to resist such collusion attack. Our PK-IPE is proven secure under the selective-vector chosen-plaintext attack model. We formalize a selective vector collusion attack model to prove that our scheme is secure under this model.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: Inner Product Encryption Selective Security Bilinear Paring TCA PCA
Contact author(s): 425478541 @ qq com
History: 2016-11-01: received
Short URL: https://ia.cr/2016/1030
License: CC BY

BibTeX

@misc{cryptoeprint:2016/1030,
      author = {Yuqiao Deng and Ge Song},
      title = {Novel Inner Product Encryption Resistant to Partial Collusion Attacks},
      howpublished = {Cryptology {ePrint} Archive, Paper 2016/1030},
      year = {2016},
      url = {https://eprint.iacr.org/2016/1030}
}