[GPSW06] Attribute-Based Encryption for Fine-Grained Access Control of Encrypted Data

Authors: Vipul Goyal, Omkant Pandey, Amit Sahai, Brent Waters | Venue: CCS 2006 | Source

Abstract

As more sensitive data is shared and stored by third-party sites on the Internet, there will be a need to encrypt data stored at these sites. One drawback of encrypting data, is that it can be selectively shared only at a coarse-grained level (i.e., giving another party your private key). We develop a new cryptographic primitive called Key-Policy Attribute-Based Encryption (KP-ABE), in which ciphertexts are associated with sets of attributes and private keys are associated with access structures that control which ciphertexts a user is able to decrypt. We demonstrate the applicability of our construction to sharing of audit-log information and broadcast encryption. Our construction supports monotone access structures, which can be expressed as monotone Boolean formulas or as Linear Secret-Sharing Schemes (LSSS), and is proved selectively secure under the Decisional Bilinear Diffie-Hellman assumption.

BibTeX

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@Inproceedings{CCS:GPSW06,
  author = {Vipul Goyal and Omkant Pandey and Amit Sahai and Brent Waters},
  title = {Attribute-Based Encryption for Fine-Grained Access Control of Encrypted Data},
  pages = {89--98},
  editor = {Ari Juels and Rebecca N. Wright and Sabrina {De Capitani di Vimercati}},
  booktitle = {ACM CCS 2006: 13th Conference on Computer and Communications Security},
  address = {Alexandria, Virginia, USA},
  month = {oct~30~--~nov~3},
  publisher = {{ACM} Press},
  year = {2006},
  doi = {10.1145/1180405.1180418},
  note = {Available as Cryptology ePrint Archive Report 2006/309},
}