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<TITLE>signature - Methods to Compute a Digital Signature for an Image</TITLE>
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	<LI><A HREF="#NAME">NAME</A>
	<LI><A HREF="#SYNOPSIS">SYNOPSIS</A>
	<LI><A HREF="#FUNCTION_DESCRIPTIONS">FUNCTION DESCRIPTIONS</A>
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		<LI><A HREF="#SignatureImage">SignatureImage</A>
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<H1><A NAME="NAME">NAME</A></H1>
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signature - Methods to Compute a Digital Signature for an Image

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<H1><A NAME="SYNOPSIS">SYNOPSIS</A></H1>
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<STRONG>SignatureImage</STRONG>(image)

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<H1><A NAME="FUNCTION_DESCRIPTIONS">FUNCTION DESCRIPTIONS</A></H1>
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<H2><A NAME="SignatureImage">SignatureImage</A></H2>
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Method SignatureImage computes a digital signature from an image. This
signature uniquely identifies the image and is convenient for determining
if the colormap of a sequence of images is identical when animating. The
digital signature is from RSA Data Security MD5 Digest Algorithm described
in Internet draft [MD5], July 1992.

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The format of the SignatureImage routine is:

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<PRE>        SignatureImage(image)
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A description of each parameter follows:

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<DT><STRONG><A NAME="item_o">image:</A></STRONG><DD>
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The address of a structure of type Image.

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