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180 <p class="navigation-index">[<a href="#SignatureImage">SignatureImage</a>]</p>
182 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/signature
183 _8c.html" id="SignatureImage">SignatureImage</a></h2>
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186 <p>SignatureImage() computes a message digest from an image pixel stream with an implementation of the NIST SHA-256 Message Digest algorithm. This signature uniquely identifies the image and is convenient for determining if an image has been modified or whether two images are identical.</p>
188 <p>The format of the SignatureImage method is:</p>
191 MagickBooleanType SignatureImage(Image *image)
194 <p>A description of each parameter follows:</p>
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