Re: recent discussion regarding 'checksums'

2010-09-27 Thread Benjamin R. Haskell
On Mon, 27 Sep 2010, grarpamp wrote: > If Ad nauseum... to each shall entertain their own use case scenarios. The overall point is that MD5 is not suitable for data integrity beyond it's known [and unknown] weaknesses. But the flip side is that rsync is not a security tool. MD5 is fine for

Re: recent discussion regarding 'checksums'

2010-09-27 Thread grarpamp
> If Ad nauseum... to each shall entertain their own use case scenarios. The overall point is that MD5 is not suitable for data integrity beyond it's known [and unknown] weaknesses. I've no faith in an algorithm with such freely generatable collisions to not have other collisions/rot with any of t

Re: recent discussion regarding 'checksums'

2010-09-27 Thread Paul Slootman
On Mon 27 Sep 2010, grarpamp wrote: > > Yes, right now "rsync -c" is not good if an attacker has had the > > opportunity to plant files on the destination and you want to make sure > > the files get updated properly, but that's an uncommon use case > > Or whitehat people backing up cracked box

Re: recent discussion regarding 'checksums'

2010-09-27 Thread grarpamp
> Yes, right now "rsync -c" is not good if an attacker has had the > opportunity to plant files on the destination and you want to make sure > the files get updated properly, but that's an uncommon use case Or whitehat people backing up cracked boxes. Or anyhat people backing up data generated