First of all this is my first Go project, so please bare with me.
This program converts arbitrary strings into a colorful .PNG.
Example pictures: pic1, pic2, pic3
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E.g. a random string like "5dfs45654sfefsfdfdsfew09´" or even a useful information like "Some secret geeky message." can be encoded into a picture.
As it is generally a bad idea to execute/download random .exe-files, I did not push it to Github. To run this program just execute following command in the src-directory.
go run *.go
The main.go contains some configuration params you can change if you want to.
const USE_RANDOM_STR = true
// Length of random str generated (takes only effect if USE_RANDOM_STR true)
const RANDOM_STR_LENGTH = 30
// String_to_encode is only used if use_random_str is false!
const STRING_TO_ENCODE = "!ä"
/*Desired name of outputted image (saved in current folder)
Your image(s) will be saved as image_0.png, image_1.png ...*/
const PIC_OUTPUT_FILE = "image"
//Size of outputted image
const PIC_WIDTH = 200
const PIC_HEIGHT = 200
/*Encode desired string in multiple random colors (so structure of all the
additional outputted images will be the same, but the colors are randomized.
This variable should be bigger than 0! */
const ENCODING_VERSIONS = 3
/** Is used instead of STRING_TO_ENCODE in case
of USE_RANDOM_STR = false. */
const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ<>|µ,;.:-_#'+*~^°!§$%&/()=?`´1234567890ß{[]}²³"
The colors itself do not contain any information about the inputted string and are completely randomized.
Therefore, each char of the string/information will be converted to unicode (numeric representation -> e.g. 'H' = 72, ...). This numeric representation is going to be used as an indicator of how long a color is supposed to stay.
Consequently, a char like 'H' with the representation of 72 will cause 72 pixels in a random color. When the message is too short for the image-size the information will be repeated (so the image might contain the information multiple times).
As the numeric representation of each char is saved into the image, the image could be theoretically converted back to a string.
As images, videos, sound-files etc. consist of several chars (e.g. if you open one of those files via a text-editor) you could also encode a video/sound-file as such a image (for sure, the image would need to have the right size).
But yeah, this whole project is just supposed to be something funny or whatever. To be honest I just wanted to use go-routines and the image-library :)