Text information encryption techniques

A, old methods: let text hiding from file

Actually this method had been circulating for toshiba satellite l20-155 laptop cpu fan a long time, but the effect is very good, this law applies to hide files sort is more, like EXE executable file, MP3 music files is ok, the most classical is to use picture file (BMP or JPG). Its principle is very simple, is an additive synthesis, will need to encrypted text information (prior stored in a TXT text file) additional to BMP image file behind. First in D plate create a 1. TXT file, the inside of the content is to the encrypted text message: then will a picture file 1. BMP also copy to D plate, it is hiding text information "parent"; And then execute "start" - > "run" menu commands, input "CMD" and make sure to open the system command line window, input "d:" and enter the system directory into d plate; Input a COPY command: "copy1. BMP/b + 1. Txt2. BMP", return after the system can hint "already COPY a file", this command function is to use picture file 1. BMP and text files 1. TXT "add" to produce the third file 2. BMP. Now success, if direct in the "my computer" double click to open this contains text information image files 2. BMP words, system will call the program to open the picture, see is and artwork (1. BMP) the same picture, the only difference is that the size of the file is picture file 1. BMP and text files 1. TXT and, as a text file 1. TXT general very small (kB level just), so generally not aware of.

Encryption is encrypted, so how to restore the 1. TXT Chinese the contents of this document? Very simple, in the new 2. BMP file on the right click select the "open mode" - > "selection process," in the popup window "open mode" choose "notepad" program to determine, the system will immediately call note was open the picture file 2. BMP. In the toshiba satellite l20-151 laptop cpu fan open notepad window front 99% of the content is messy code, and is the image file 1. BMP content, scroll to the end of the file, you will see the prototype of a text message. The advantages of this method does not need to third party software, direct use of system own COPY command. Defect is who can use change "open mode" call notepad way to open the "new" picture files, and see the last the text information.

Second, the new moves: let words change as two-dimension code

This can't unarmed, need to use a small tool, download address is toshiba satellite l20-149 laptop cpu fan, QRCode name. After the download and unpack will get a file PsQREditchs, double-click after it is used.

Interface and using method is very simple, click on the first choice at the bottom of the fourth option card "text information", and then in the input box input you want to encrypted text information (software support writing copy and paste), in the process of the input text you will find that the space can appear a strange black and white square graphics, this is the so-called "two-dimension code," and it will with the increase of the input text information more and more complex, more and more dense. Text information input is completed, click the selected below the window "encryption" option, and in front of the "encryption password" box input set password. Finally click on the toolbar above the third "save" button, according to clew choose save the path and name, thus get the input text information with password protection encryption information, this file is a BMP bitmap file. On the face of it what also look not to come out, which is a black and white pattern rectangular block, can put it through E-mail or QQ transmitted to a friend, even if others intercepted all can't see the toshiba satellite l20-151 laptop cpu fan hidden text information. Friends to receive this picture "pictures", then run QRCode software put it read to come in, and to input images generated password, so that will restore the original text information.


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