Re: file checksums

2000-05-11 Thread Thomas Pornin
On Wed, May 10, 2000 at 05:30:53PM -0400, Theodore Y. Ts'o wrote: Consider that block-swapping attacks can preserve the checksum even though the attacker doesn't know the underlying data. That's why I also added: each 64 bit or (128 bit) block is enciphered with a different key. In the

Re: file checksums

2000-05-11 Thread Erez Zadok
In message [EMAIL PROTECTED], Thomas Pornin writes: [...] To answer to the second question, I need the experience from the filesystem-guys, who know how a filesystem is typically used, and who are supposed to at least lurk in this mailing-list. Hence this discussion. It is my understanding

Re: file checksums

2000-05-11 Thread Jan Harkes
On Thu, May 11, 2000 at 04:30:58AM -0400, Erez Zadok wrote: Thomas, f/s usage patterns vary of course. There are at least three papers you should take a look at concerning this topic: L. Mummert and M. Satyanarayanan. Long Term Distributed File Reference Tracing: Implementation and

Re: Multiple devfs mounts

2000-05-11 Thread Alexander Viro
On Wed, 10 May 2000, Erez Zadok wrote: IMHO the BSD hacks to libc support unionfs were ugly. To write unionfs, they used the existing nullfs "template", but then they had to modify the VFS *and* other user-land stuff. I was not talking about unionfs. union-mount is pretty different and I