Welcome to the resource topic for 2005/028
Title:
Improved Proxy Re-Encryption Schemes with Applications to Secure Distributed Storage
Authors: 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.
ePrint: https://eprint.iacr.org/2005/028
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