On Thu, Dec 07, 2000 at 06:40:49PM +1100, Horst Herb wrote:
> > This may be implemented very fast (if someone points me where
> > I can find CRC func). And I could implement "physical log"
> > till next monday.
>
> As the logging might include large data blocks, especially now that
> we can TOAST our data, I would strongly suggest to use strong hashes
> like RIPEMD or MD5 instead of CRC-32 and the like.
Cryptographically-secure hashes are unnecessarily expensive to compute.
A simple 64-bit CRC would be of equal value, at much less expense.
Nathan Myers
ncm@zembu.com