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Steganography is a very exciting topic and is not limited to image data but can also be applied to, e.g., audio data. I’ve done something similar in the past a

Steganography is a very exciting topic and is not limited to image data but can also be applied to, e.g., audio data. I’ve done something similar in the past and embedded Merkle tree nodes in an image to allow partial integrity validation. It was a fun little project: https://github.com/dennis-tra/image-stego https://github.com/dennis-tra/image-stego

rmatt2000 4y ago
In the original MIPS-32 instruction set, some fields in the instruction are unused in certain instructions. (The shift field in R-format instructions is an example.) I had a student who did a project to take real MIPS machine language programs and store textual data in them by repurposing these unused fields.