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

12 years 11 days ago
Improved Proxy Re-Encryption Schemes with Applications to Secure Distributed Storage
In 1998, Blaze, Bleumer, and Strauss 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 reencryption 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.
Giuseppe Ateniese, Kevin Fu, Matthew Green, Susan
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where NDSS
Authors Giuseppe Ateniese, Kevin Fu, Matthew Green, Susan Hohenberger
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