<oembed><type>rich</type><version>1.0</version><author_name>npub1uvtfvcegcn9kds68r8he57emc480vqtx8t22kpsctxgjxae44gvsksaxrt</author_name><author_url>https://nostr.ae/npub1uvtfvcegcn9kds68r8he57emc480vqtx8t22kpsctxgjxae44gvsksaxrt</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2013-04-01&#xA;📝 Original message:On 1 April 2013 20:28, Petr Praus &lt;petr at praus.net&gt; wrote:&#xA;&#xA;&gt; An attacker would have to find a collision between two specific pieces of&#xA;&gt; code - his malicious code and a useful innoculous code that would be&#xA;&gt; accepted as pull request. This is the second, much harder case in the&#xA;&gt; birthday problem. When people talk about SHA-1 being broken they actually&#xA;&gt; mean the first case in the birthday problem - find any two arbitrary values&#xA;&gt; that hash to the same value. So, no I don&#39;t think it&#39;s a feasible attack&#xA;&gt; vector any time soon.&#xA;&gt;&#xA;&gt; Besides, with that kind of hashing power, it might be more feasible to&#xA;&gt; cause problems in the chain by e.g. constantly splitting it.&#xA;&gt;&#xA;&#xA;OK, maybe im being *way* too paranoid here ... but what if someone had&#xA;access to github, could they replace one file with one they had prepared at&#xA;some point?&#xA;&#xA;&#xA;&gt;&#xA;&gt;&#xA;&gt; On 1 April 2013 03:26, Melvin Carvalho &lt;melvincarvalho at gmail.com&gt; wrote:&#xA;&gt;&#xA;&gt;&gt; I was just looking at:&#xA;&gt;&gt;&#xA;&gt;&gt; https://bitcointalk.org/index.php?topic=4571.0&#xA;&gt;&gt;&#xA;&gt;&gt; I&#39;m just curious if there is a possible attack vector here based on the&#xA;&gt;&gt; fact that git uses the relatively week SHA1&#xA;&gt;&gt;&#xA;&gt;&gt; Could a seemingly innocuous pull request generate another file with a&#xA;&gt;&gt; backdoor/nonce combination that slips under the radar?&#xA;&gt;&gt;&#xA;&gt;&gt; Apologies if this has come up before ...&#xA;&gt;&gt;&#xA;&gt;&gt;&#xA;&gt;&gt; ------------------------------------------------------------------------------&#xA;&gt;&gt; Own the Future-Intel&amp;reg; Level Up Game Demo Contest 2013&#xA;&gt;&gt; Rise to greatness in Intel&#39;s independent game demo contest.&#xA;&gt;&gt; Compete for recognition, cash, and the chance to get your game&#xA;&gt;&gt; on Steam. $5K grand prize plus 10 genre and skill prizes.&#xA;&gt;&gt; Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d&#xA;&gt;&gt; _______________________________________________&#xA;&gt;&gt; Bitcoin-development mailing list&#xA;&gt;&gt; Bitcoin-development at lists.sourceforge.net&#xA;&gt;&gt; https://lists.sourceforge.net/lists/listinfo/bitcoin-development&#xA;&gt;&gt;&#xA;&gt;&gt;&#xA;&gt;&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20130401/073ada84/attachment.html&gt;</html></oembed>