Encryption and decryption have been used for long to send secret messages without detection. However, it could still be known that a secret message exists. You can overcome this by sending a secret message embedded inside an image file. Read through this article for the procedure.
How to write an Invisible Text Message in an Image File
Any file on a computer is basically reduced to a binary code which in turn could be written as a text code. An image file is no exception to this. Since an image file has a form in a text code, you can open it using a text editor and enter a secret code in that text.
The procedure to write an invisible or secret code in an image file is as follows:
- Right-click on the image file. A menu will pop up.
- Select Open with > Notepad.
- You will see a lot of gibberish in the Notepad window.
- In any line along the text, type the secret message.
- Press CTRL+S to Save the message.
Since the whole message is gibberish, the only text that makes sense is the message. Also, you can mention a code. Eg. I mention “Secret message” before the message. All that the recipient would have to do is search for the words.
What will happen to the image when you save it again?
When you save the image again, it will remain unchanged. The text is not a part of the original code and would not be read by the image file. Basically, the image would appear as it is and you can send it to the recipient. No third party will notice any changes.
Why is encryption needed?
Encryption is the process of coding a message before sending it to the recipient. In this process, you can keep the message secretive. Even if a third person notices the message, he/she will not understand it. The most popular method of encryption is to assign different letters to the text. Only the sender and the recipient will have the key to change it back to the original text.
How is image encryption better than text encryption?
In the case of text encryption, a third person may or may not be able to decode the message. However, he/she will be aware that a message is being sent. In the case of image encryption, this will not be the case. Since an image will look as it is and no text is visible, the third person will not be able to notice the text at all.
Can you encrypt any file?
All files will not open with Notepad. However, image, sound, and video files will definitely open with Notepad. You can add your message to these files before sending them to the recipient. Since video files are very large, it is not advisable to use them. As for sound files, it is advisable to use smaller sound files.
Why does the Notepad text of image files contain gibberish?
The image file is ultimately read by the system in the form of binary characters 0 and 1. When you convert these characters to an image, they make sense. However, if you convert these characters to text, the ultimate result would be random characters.