Improved Proxy Re-Encryption Schemes with Applications to Secure Distributed Storage

Giuseppe Ateniese; Kevin Fu; Matthew Green; Susan Hohenberger

Paper 2005/028 Original: eprint.iacr.org/2005/028 ↗

Improved Proxy Re-Encryption Schemes with Applications to Secure Distributed Storage

Giuseppe Ateniese

Kevin Fu

Matthew Green

Susan Hohenberger

Abstract

In 1998, Blaze, Bleumer, and Strauss (BBS) proposed an application called atomic proxy re-encryption, in which a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. We predict that fast and secure re-encryption will become increasingly popular as a method for managing encrypted file systems. Although efficiently computable, the wide-spread adoption of BBS re-encryption has been hindered by considerable security risks. Following recent work of Ivan and Dodis, we present new re-encryption schemes that realize a stronger notion of security and we demonstrate the usefulness of proxy re-encryption as a method of adding access control to the SFS read-only file system. Performance measurements of our experimental file system demonstrate that proxy re-encryption can work effectively in practice.

Metadata

Available format(s): PDF
Publication info: Preprint.
History: 2006-01-11: last updated; 2005-02-04: published
Short URL: https://ia.cr/2005/028
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2005/028,
      author = {Giuseppe Ateniese and Kevin Fu and Matthew Green and Susan Hohenberger},
      title = {Improved Proxy Re-Encryption Schemes with Applications to Secure Distributed Storage},
      howpublished = {Cryptology {ePrint} Archive, Paper 2005/028},
      year = {2005},
      url = {https://eprint.iacr.org/2005/028}
}