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\r
-<p class="navigation-index">[<a href="#intro">Introduction to Enciphering and Deciphering Images</a> • <a href="#encipher">Encipher an Image</a> • <a href="#decipher">Decipher an Image</a> • <a href="#caveats">Encipher and Decipher Caveats</a>]</p>
+<h1>Enciphering and Deciphering Images</h1>
+<p class="navigation-index">[<a href="#encipher">Encipher an Image</a> • <a href="#decipher">Decipher an Image</a> • <a href="#caveats">Encipher and Decipher Caveats</a>]</p>
-<h2><a name="intro"></a>Introduction to Enciphering and Deciphering Images</h2>
<div class="doc-section">
<p>Most images, by design, are made to be viewed often and by many people. Web images, for example, may be viewed hundreds of times a day by a multitude of web vistors. However, in some cases, you may want to keep a particular image private so that only you or perhaps a select group of your friends or web visitors can view it. ImageMagick permits you to scramble your images such that unless someone knows your passphrase, they will be unable to view the original content.</p>
</div>
-<h2><a name="encipher"></a>Encipher an Image</h2>
+<h2><a id="encipher"></a>Encipher an Image</h2>
<div class="doc-section">
<p>Use the <a href="../www/command-line-options.html#encipher">-encipher</a> option to scramble your image so that it is unrecognizable. The option requires a filename that contains your passphrase. In this example we scramble an image and save it in the PNG format:</p>
<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.jpg -encipher smiley.gif rose.png</span></p>
</div>
-<h2><a name="decipher"></a>Decipher an Image</h2>
+<h2><a id="decipher"></a>Decipher an Image</h2>
<div class="doc-section">
<p>Use the <a href="../www/command-line-options.html#decipher">-decipher</a> option to unscramble your image so that it is recognizable once again. The option requires a filename that contains your passphrase. In this example we unscramble an image and save it in the JPEG format:</p>
<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.png -decipher passphrase.txt rose.jpg</span></p>
</div>
-<h2><a name="caveats"></a>Encipher and Decipher Caveats</h2>
+<h2><a id="caveats"></a>Encipher and Decipher Caveats</h2>
<div class="doc-section">
<p>Some formats do not support enciphered pixels-- the JPEG or GIF format, for
enciphered image content.</p>
<p>Some small practical examples of image enciphering can be found in IM
-Examples <A HREF="http://www.imagemagick.org/Usage/transform/#encipher"
->Encrypting Image Data</A>. </p>
+Examples <a href="http://www.imagemagick.org/Usage/transform/#encipher"
+>Encrypting Image Data</a>. </p>
</div>
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projects / imagemagick / blobdiff