2009 Reports :  Cryptology ePrint Archive Forum
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2009/081
Posted by: alpkup (IP Logged)
Date: 03 April 2009 02:19

The paper uses many techniques from previous work of Ateniese et al. without properly acknowledging it. Furthermore, there are no cryptographic security proofs. Lastly, even though the blocks of the file can be updated within the scheme, the use of error-correcting codes make any updates on the file change (almost) the whole encoding, thus rendering an updateable scheme useless.

The application to cloud storage scenario is good, but there is not enough comparison with previous work. More specifically, there is not a satisfactory discussion of why previous POR and PDP schemes cannot be applied straightforwardly to the cloud storage setting (instead of a single-server setting).

I suggest humbly that the authors should address such concerns.

--
Alptekin Kp



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