[Dovecot] Single instance storage - testing please

[Michael Orlitzky]

On 08/26/2010 04:41 PM, Mike Abbott wrote:
>> 1. What hash algorithm to use?
>
>> 2. Should I add support for trusting hash uniqueness
>
> Use two hash functions and concatenate the hashes.  While both hash
> systems may eventually be hacked it is unlikely that hacking them
> will result in a targeted alias.

Just make it possible to change the hash in the future. Have a utility 
that updates all (or a subset) of them.

If e.g. SHA256 is truly broken in the future, the utility can run 
overnight while I fix the million other emergencies that are about to 
exist in the morning.