Messages in this thread |  | | Date | Tue, 28 Mar 2006 15:49:47 +0200 | From | Christian Cachin <> | Subject | Re: eCryptfs Design Document |
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Hi all,
I'm a cryptographer with an interest in encrypting stored data.
Mike had asked me to read the eCryptfs design and I can confirm the security statements made there, and that the algorithm choices are adequate. The current release does not support integrity protection, but this feature is promised for the next release through a MAC.
I don't see the need for tweakable encryption modes (like LRW, CMC) in the eCryptfs strategy because being a virtual file system, it can afford to insert some extra space and is not bound to the block boundaries like a block device, for which these were developed. And with integrity protection coming in the next release, the little extra security gained in the current release by the tweakable modes would be a wasted effort.
cc
--- Christian Cachin email: cca@zurich.ibm.com IBM Zurich Research Laboratory tel: +41-44-724-8989 Saumerstrasse 4 / Postfach fax: +41-44-724-8953 CH-8803 Rueschlikon, Switzerland http://www.zurich.ibm.com/~cca
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