[dm-devel] Some thoughts about providing data block checksumming for ext4

Milan Broz gmazyland at gmail.com
Wed Nov 5 21:37:09 UTC 2014

On 11/05/2014 01:27 AM, Mikulas Patocka wrote:

> So you really need cryptographic hashes instead of checksums to avoid the 
> collisions.

I am not sure if it was mentioned but also see how integrity is implemented in
FreeBSD GELI system by playing with sector sizes

Also, for encrypted devices (either on file level or block level) I think 
there are still requests for implementing real crypto authenticated modes (like GCM)
which obviously need similar space for auth tag. (I think ZFS uses it this way.) 


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