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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=10207&size=small" /></div> <h1 class="ph">SSD要完全擦除数据比硬盘更难 </h1> <p class="xg1"> 时间：2011-2-22 15:45<a class="zz" href="home.php?mod=space&uid=10207">作者：乏味</a> 阅读<em id="_viewnum">(816)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>若要实现完美擦除甚至会损坏闪存芯片--实验显示，即便是目前最有效的文件销毁方法也会在SSD上留下大约4%左右的数据残余，因此研究人员建议对SSD进行加密，通过密钥的方法完成全盘加密，从而避免机密数据在销毁后重新 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">加州圣何塞Usenix FAST 11文件和存储技术会议上，研究人员发表了SSD硬盘的安全报告，揭示了其难以被安全擦除的事实。<BR>我们都知道要擦除硬盘数据，需要用数据完全复写原有数据区域，而SSD的非磁性存储结构和保存文件的方式决定了这种存储器上的数据难以被清理，相当复杂并且处理起来更费时间。<BR><BR>若要实现完美擦除甚至会损坏闪存芯片--实验<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>，即便是目前最有效的文件销毁方法也会在SSD上留下大约4%左右的数据残余，因此研究人员建议对SSD进行加密，通过密钥的方法完成全盘加密，从而避免机密数据在销毁后重新被恢复出来。<BR><BR> <P><A href="http://www.oecr.com/data/attachment/portal/201102/22/1543403luqiiia4xvqli7k.jpg" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201102/22/1543403luqiiia4xvqli7k.jpg"></A></P> <P> </P> <P><A 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