On 2/25/13 4:01 PM, "David Raynor"  wrote:

> On Mon, Feb 25, 2013 at 4:47 PM, Kaushik Vaidyanathan <
> kvaid...@andrew.cmu.edu> wrote:
> 
>> Hi
>> 
>> I have a basic question. When I run clamscan with --debug option I see that
>> #AC sigs and #BM sigs reported for the different engines clamscan spawns.
>> If I add the AC and BM for all engines its somewhere around 110K-120K
>> signatures,
>> 
>> However I see the sigtool info report for main.cvd and daily.cvd report
>> close a 1M and 800K signatures respectively.
>> 
>> I guess there is a difference in the definition of the word "signature" but
>> I am unable to figure out what it is.
>> 
>> Thank you!
>> _______________________________________________
>> Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
>> http://www.clamav.net/support/ml
>> 
> 
> In short, there are signatures that are not AC type or BM type. So the
> difference in definition you refer to is summed up in this equation: AC
> signatures + BM signatures < ALL signatures
> 
> The largest group is full-file hash signatures (from the HDB & MDB-style
> signatures). If you use sigtool to unpack the CVD files, you will see that
> main.mdb and daily.mdb are the largest files inside each CVD. That is the
> biggest part of the difference. The true "all signatures" count is printed
> out in the "Known viruses" line of clamscan's output.
> 
> Dave R.
> 
I was lead to believe the "Known viruses" line of the clamscan output
represents all _loaded_ signatures, which may not include optional
signatures such as PUA.


-Al-
 
-- 
Al Varnell
Mountain View, CA



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