In steganography, an ordinary message masks the presence of a secret communication. Humans can never do it perfectly, but a new study shows it’s possible for machines.

Avijit Biswas

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Machine-generated messages, such as text, images, and video, can now be used to achieve perfect security for steganography, a method of hiding secret messages within other messages. The use of large language models and minimum entropy coupling algorithms allows for statistically indistinguishable machine-generated content that conceals hidden messages. However, the practical implementation of perfect security in steganography is limited by computational efficiency.

Secret Messages Can Hide in AI-Generated Media