https://github.com/ivan-guerra/steg

Embed an image within another
https://github.com/ivan-guerra/steg

least-significant-bit-steganography least-significant-bit-substitution

Last synced: 22 days ago
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Embed an image within another

• Host: GitHub
• URL: https://github.com/ivan-guerra/steg
• Owner: ivan-guerra
• License: unlicense
• Created: 2023-06-25T01:20:13.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2024-11-19T02:02:24.000Z (3 months ago)
• Last Synced: 2024-11-19T03:17:16.338Z (3 months ago)
• Topics: least-significant-bit-steganography, least-significant-bit-substitution
• Language: Rust
• Homepage: https://programmador.com/posts/2023/digital-image-steganography/
• Size: 1.33 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Image Steganography

This project implements a command line utility that can be used to embed an

image within another. The method used here is known as least significant bit

steganography which uses n-bits of each color channel to embed hidden

information in a container image. Be wary, this method is susceptible to [noise

detection techniques][1] and so is not a particularly effective method if one's

goal is to go undetected!

Below is a capture showing merged and unmerged images. On the left is the result

of merging a [container](examples/container.jpg) image with a

[secret](examples/secret.jpg) image. On the right, we have the unmerged image.

There's some obvious loss in quality, but the extracted image is still

recognizable.



  

  



### Program Usage

The `steg` tool supports two commands: `merge`, and `unmerge`.

The `merge` command takes four arguments where the first is the container image,

the second is the secret image, the third is the output path of the merged

image, and the fourth is the number of bits to use for embedding the secret

image:

```bash

steg merge container.jpg secret.jpg merged.png 4

```

> **Note**

> The merged image's format should be a lossless format! Lossy formats like JPEG

> will result in a loss of quality when unmerging the image.

The `unmerge` command takes three arguments where the first argument is an image

previously constructed using the `merge` command, the second argument is the

output path of the unmerged image, and the third argument is the number of bits

used to embed the secret image:

```bash

steg unmerge merged.png unmerged.jpg 4

```

[1]: https://dl.acm.org/doi/book/10.5555/1329756