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jfvacher wrote:

> I am supporting a small network of Linux boxes running RH3 in a restricted 
> area, with no connection to an outside network; hence I do not use 
> freshclam to update the virus data base files, but rather download 
> main.cvd and daily.cvd and manually upgrade each of the four machines.  My 
> question is this- is there a digital signature capability for these files 
> that is associated with a manual download?     If so, what are the steps I 
> need to follow?  I am using gnupg 1.2.1 and am familiar with adding public 
> keys, such as the ones on the dag/wieers website used to sign the binary 
> RPMs.  Are there signature files associated with the main.cvd and 
> daily.cvd files posted on the home page of clamav.net?  If so, whose key 
> is used to encrypt? (You may correctly ask "why bother running Clam or 
> mess with digital signatures if you're not on the public net?"  The reason 
> is, that due to the sensitive nature of the processing that goes on using 
> these machines, the powers that be worry about protection from viruses 
> period, and using open source is a further cause for their concern, so the 
> ability to at least download from trusted sources is a big thing to them).
> 
> The answers to FAQ questions 20 and 36 do not seem to apply to my 
> situation, but I may not be smart enough to know if they do, as I am a 
> very inexperienced Linux newbie.  I wasn't able to find any other postings 
> that seemed to be relevant to my situation either.
> 
> Any help would be greatly appreciated.

sigtool does the checking.

Man sigtool says: "It's  also  to  verify digital signatures of databases...",
and option -i or --info does "Print a CVD information and verify MD5 and a
digital  signature."

How it does it?  I don't know, I haven't checked, but no mention is made that it
 may need an Internet connection. To be sure you'll have to try it or perhaps
look at the source code.  I did once compared the MD5 checksum showed with the
output of the usual md5sum, and they are different.
- --
René Berber
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