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Jamais Cascio@cascio.bsky.social |
Idle Friday question: has anyone explored using steganography for embedded watermarks in digital images? The problem with watermarks in present-day generative images is that they can easily be edited out. Stgnrphy hijacks the least-significant-bit in image data across the whole image to embed data.
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Jamais Cascio
@cascio.bsky.social
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Some immediate issues come to mind, so it would require a more sophisticated process to make sure the data can't be fully eliminated. But there might be something there. Or I could be tweaking on caffeine.
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Tony Fisk
@arfisk.bsky.social
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Consider what such a watermark provides: 1. a source signature validating the image (embedded data being a an encrypted hash value of the image, decrypted using public key of source.) 2. non-repudiation (yes, it *was* from this source) The worst editting can do is make the result unverified.
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