Can gpg be used for INLINE signing of multimedia?

[Anthony E. Greene]

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On 28-Jun-2002/07:10 -0500, andy_man@popmail.com wrote:
>Is it possible to use gpg signing as a parasite to image or audio files,
>in order to guarantee autenthicity of the content?

Not without making the image unreadable by standard image viewers.

>I've heard of other 'digital signing' methods for images, but as far as I
>understand, those methods modify the image content, albeit only slightly.
>Am I correct?

Those other methods merely mark the image in such a way that the owner can
identify the image as their own. For example, an image could be modified
so that some of the bytes read:

 "Copyright (c) 2002, Anthony E. Greene <mailto:agreene@pobox.com>"


Tony
- -- 
Anthony E. Greene <mailto:agreene@pobox.com>
OpenPGP Key: 0x6C94239D/7B3D BD7D 7D91 1B44 BA26  C484 A42A 60DD 6C94 239D
AOL/Yahoo Messenger: TonyG05    HomePage: <http://www.pobox.com/~agreene/>
Linux. The choice of a GNU generation <http://www.linux.org/>

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