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   <H1>[Mageia-sysadm] changing binrepos</H1>
    <B>nicolas vigier</B> 
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       TITLE="[Mageia-sysadm] changing binrepos">boklm at mars-attacks.org
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    <I>Thu Jul 28 15:48:12 CEST 2011</I>
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<PRE>On Fri, 15 Jul 2011, Pascal Terjan wrote:

&gt;<i> 
</I>&gt;<i> I think &lt;original filename&gt;-&lt;sha1&gt; would be good to avoid both
</I>&gt;<i> filename collision and sha1 collision while still sharing files
</I>&gt;<i> between packages
</I>
I think probability of sha1 collision is very low, so we can ignore it.

According to this page :
<A HREF="http://bitcache.org/faq/hash-collision-probabilities">http://bitcache.org/faq/hash-collision-probabilities</A>

If we have 50000 different files, probability of collision with 160 bit
hash would be something like 10^-39.

So I don't think adding original filename is needed.

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