1. The old method: hide text in documents
In fact, this method has been circulating for a long time, but the effect is very good. This method is suitable for hiding. There are many types of files, like EXE executable files and MP3 music files. The most classic is to use picture files (BMP or JPG). Its principle is very simple, that is, an additive synthesis, which appends the text information that needs to be encrypted (pre-stored in a TXT text file) to the back of the BMP image file. First create a new 1.txt file in the D drive, and the content inside is the text information to be encrypted: then copy an image file 1.bmp to the D drive, which is the "parent" of the hiding text information; then execute "start "→" Run "menu command, enter" CMD "and confirm to open the system's command line window, enter" d: "and press Enter to transfer from the system directory to the D drive; enter a COPY command:" copy1.bmp / ​​b + 1.txt2.bmp ", the system will prompt" 1 file has been copied "after the carriage return, the function of this command is to use the picture file 1.bmp and the text file 1.txt" add "to generate the third file 2. bmp. You are now done. If you double-click to open the picture file 2.bmp with text information directly in "My Computer", the system will call the local picture viewing program to open it. What you see is the original picture ( 1.bmp) The same picture, the only difference is that the file size is the sum of the picture file 1.bmp and the text file 1.txt, and because the text file 1.txt is generally very small (kB level only), so Generally not aware of it.
Encryption is encrypted, so how to restore the contents of the text file in 1.txt? Very simple, right-click on the new 2.bmp file and select "Open Mode" → "Select Program", in the pop-up "Open Mode" "After selecting the" Notepad "program in the window, the system will immediately call Notepad to open the picture file 2.bmp. In the opened Notepad window, the first 99% of the content is garbled, which is the content of the original picture file 1.bmp. Drag the scroll bar to the end of the file, and you will see the original text information. The advantage of this method is that it does not require third-party software and directly uses the COPY command that comes with the system; the disadvantage is that anyone can open the "new" image file by modifying the "open method" to call the Notepad method, and see the last Text message.
Second, the new move: turn the text into a QR code
This time you can't go empty-handed, you need to use a small tool, the download address is http: //SOFt/12982.html, the name is QRCode. After downloading and decompressing, you will get a file PsQREditchs, which can be used after double-clicking.
The interface and usage are very simple, first click to select the fourth tab "text information" below, then enter the text information you want to encrypt in the input box (software supports copying and pasting of text), enter text During the process, you will find a strange black and white square figure in the blank space above, which is called the "two-dimensional code", and it will become more and more complicated and denser with the increase of the entered text information . After entering the text information, click to select the "Encryption" option at the bottom of the window, and enter the set password in the "Encryption Password" box at the front. Finally, click the third "Save" button on the upper toolbar, and follow the prompts to select the save path and name it. In this way, you get the encrypted information with password protection of the entered text information. This file is a BMP bitmap file. Nothing can be seen on the surface. It is a rectangular block with black and white patterns. You can send it to a friend via email or QQ. Even if someone intercepts it halfway, you won't see the hidden text. After receiving this "picture", a friend runs QRCode software to read it in, and enters the password set when generating the picture, so that the original text information will be restored.
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