Un petit message caché.
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2786 - 
12012 pts ★ Champion
9486 pts ★ ExpertOn 2023-02-10 at 14:07:13
Coucou,
Mario a un message caché, saurez vous le découvrir ?
Mario a un message caché, saurez vous le découvrir ?
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On 2023-02-10 at 14:21:18
Coucou,
Mario a un message caché, saurez vous le découvrir ?
Mario a un message caché, saurez vous le découvrir ?
Quel message caché?
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On 2023-02-10 at 15:28:29
Coucou,
Mario a un message caché, saurez vous le découvrir ?
Mario a un message caché, saurez vous le découvrir ?
Why Is It Called Mario Modifier?
On 2023-02-10 at 16:45:37
No, the message is inside the image.
On 2023-02-10 at 18:25:35
Le message , c'est Mii ?
On 2023-02-11 at 20:38:45
?
On 2023-02-11 at 21:00:07
On 2023-02-11 at 21:02:49
This time it is not a hidden message, but a hidden picture.
On 2023-02-11 at 21:11:12
How Do You Put a Message in An Image? I Tried but It Says Random Symbols. 
On 2023-02-12 at 10:05:35
Le message , c'est Mii ?
Où tu vois le M?
3On 2023-02-12 at 10:22:12
Le message , c'est Mii ?
Où tu vois le M?
sur la casquette de mario
On 2023-02-12 at 10:27:42
You are right !
Steganography is a technique by hiding message on an image. Precisely, in the pixels which compose images.
Indeed, each letter do you write are encrypted in each pixels.
How ? You have to know that image is compose of pixel encoded into 3 components, red, green and blue. We modify by a small effect these component to encrypt the binary code of each letters.
for example, the letter a have 0100 0011 binary code. So, the first is code the 0. Is simply. The first component red of first pixel is a number between 0 and 255. if it is even so we keep if it is odd, we had (or remove if it is 255) one. After we take the 1 and we do this until the end.
The weird symbols that we can see after the message, it is because the image is decoded entirely, so all pixels are decoded and the message is not on the image totaly. So the software decode weird symbole after the main message.
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