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		<title>Dedupe, Immutability & Non-repudiation</title>
		<description>Discuss Dedupe, Immutability & Non-repudiation</description>
		<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html</link>
		<lastBuildDate>Fri, 10 Feb 2012 11:11:21 +0000</lastBuildDate>
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			<title>Great Post</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-653</link>
			<description><![CDATA[This was a great post. We have been looking at a couple dedup solutions...for the obvious reasons. But I've been getting push back from my team leader regarding the legality of the data. After numerous websearches nothing really has come up, unless I'm not looking for the right thing. I figure if the gov't, much larger companies, law firms, ect..are using this technology then the legal argument is irrelevant. My opinion as well.]]></description>
			<dc:creator>David Howell</dc:creator>
			<pubDate>Thu, 30 Jul 2009 11:33:45 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-653</guid>
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			<title>That misses the point</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-456</link>
			<description><![CDATA[What I'm saying is that if you prove, using whatever method is deemed legally admissible, that the doc today is the same as it was when it was created, it being deduped in between those two times is irrelevant. Having said that what you're saying is your opinion and is not backed up by case law YET. In fact, while it has been proven that you can create two blocks of data with the same hash, no one that I've ever read about or talked to has demonstrated the ability to significantly change an object (email, document, etc) while keeping it's hash the same. The amount of work and computing power to do that for EACH document you wanted to hack would be ridiculously large. Therefore, I think that someone trying to argue that a block of emails can't really be trusted because their hash can be hacked could be easily argued against in court. And that's MY opinion. BUT, again, that wasn't the point of this article.]]></description>
			<dc:creator>W. Curtis Preston</dc:creator>
			<pubDate>Fri, 23 Jan 2009 23:45:08 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-456</guid>
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			<title>SHA-1</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-455</link>
			<description><![CDATA[Cryptographic algorithms are broken and collisions can be created easily. Unless you do a bit-by-bit comparison, no digital signatures can be legally admissible.]]></description>
			<dc:creator>Rav Raj</dc:creator>
			<pubDate>Fri, 23 Jan 2009 21:07:27 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-455</guid>
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		<item>
			<title>Not sure what you\'re saying</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-413</link>
			<description><![CDATA[Are you agreeing or disagreeing with me?]]></description>
			<dc:creator>W. Curtis Preston</dc:creator>
			<pubDate>Tue, 02 Dec 2008 02:43:32 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-413</guid>
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		<item>
			<title>Nice Post</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-410</link>
			<description><![CDATA[My two cents - When in case of a normal storage, we have no clue how it maintains the data internally :-) Till the point the application is able to see the data just the way it stored it, both the propositions (Immutability & Non-repudiation) hold good. Its the mounted file-system which gives the idea about how data is visible and not the disk.]]></description>
			<dc:creator>Jaspreet</dc:creator>
			<pubDate>Sun, 23 Nov 2008 13:33:37 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/177-dedupe-a-immutability.html#comment-410</guid>
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