Erebus is a work to help you share content on the internet and preserve your privacy.
The algorithm is very simple, basically the rows and columns of the image are flipped (randomly). A key is created in CSV format, and from there, the rows and/or columns that were randomly selected are flipped. The number of moves is decided by the user.
It is planned to improve the algorithm in a future release.
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| [1] Lenna or Lena is a standard test image used in the field of image processing since 1973. It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker, cropped from the centerfold of the November 1972 issue of Playboy magazine. In this example we can see what happens behind the scenes during the encryption process. |
Since Erebus is still under development, only Windows is supported; MAC and Linux will eventually be able to run this.
To encrypt an image you can run the following command:
./erebus -action protect -inputFile ./input/path/example.png -iterations 1000
To decrypt an image you can run the following command:
./erebus -action unprotect -inputFile ./input/path/example.png -keyPath ./key/path/example.csv
Here are some comparisons of the same image being encrypted with a different number of iterations.
| Original | Encrypted (I = 1000) | Encrypted (I = 2000) | Encrypted (I = 5000) |
|---|---|---|---|
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Here the execution times are shown, both the generation of the key, as well as those of the encryption (3960 iterations) and decryption processes; for an image with a dimension of 640x350 (frame taken from the movie Like Minds).
| Original | Encryption Key | Encrypted Image | Decrypted Image |
|---|---|---|---|
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NA |  |
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| NA | 0.692811 seconds | 1.623960 seconds | 0.024757 seconds |
This will come in a future release.
This section is still under construction and it's gonna be released soon.