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git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@3003 4b5297f7-1745-476d-ba37-a9c6900126ab
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Peter Saint-Andre 2009-04-07 00:55:47 +00:00
parent 30c0e335dc
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xep-0264.xml
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@ -168,7 +168,7 @@ file being offered (name, size, and date). There currently is no way to provide
<p>The inclusion of an image thumbnail may leak information about a transfer
otherwise taking place on an e2e encrypted file transfer stream. A client MAY
wish to not include a thumbnail.</p>
<p>A client MUST not rely on the values specified for the width and height of a thumbnail to allocate a bitmap data buffer for the thumbnail, to prevent possible DoS attacks. Also a client SHOULD apply implementation-specific limits on the thumbnails, if using these values to pepare a UI element for the thumbnail image, of f.ex. 128x128 pixels, values exceeding theese would then be truncated and the thumbnail image scaled down when received.</p>
<p>A client MUST NOT rely on the values specified for the width and height of a thumbnail to allocate a bitmap data buffer for the thumbnail, to prevent possible DoS attacks. Also a client SHOULD apply implementation-specific limits on the thumbnails, if using these values to pepare a UI element for the thumbnail image, of f.ex. 128x128 pixels, values exceeding theese would then be truncated and the thumbnail image scaled down when received.</p>
</section1>
<section1 topic='IANA Considerations' anchor='iana'>
<p>This document requires no interaction with &IANA;.</p>