Messages in this thread | | | Date | Tue, 20 Mar 2012 23:44:47 -0400 (EDT) | From | Mikulas Patocka <> | Subject | Re: [dm-devel] [PATCH] dm: remake of the verity target |
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On Tue, 20 Mar 2012, Mandeep Singh Baines wrote:
> But we are hashing fixed-sized blocks so there is no possibility of extension.
If the first part of some block contains some security-sensitive data and the last part of the same block can be attacker-controlled, he can use the collision attack to change the security-sensitive data.
> However, better safe than sorry. I guess we'll just have to deal with > backward incompatibility. So feel free to add my sign off to the new > patch also. > > Signed-off-by: Mandeep Singh Baines <msb@chromium.org> > > Regards, > Mandeep > > > Mikulas
I can introduce a switch to make it accept the old format. Do you want to?
Mikulas
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