Qtech Hide & View Download Page
（Please read the Qtech Hide & View page first, and then download by Internet Explorer.）
After downloading the "QtechHV-v011.dat" file, re-name it as "QtechHV-v011.exe" and run it to appear a folder "Qtech-HV v011" that includes 8 files and one sub-folder. Read "RDme-QtechHV-v011.pdf" first of all.
(for Internet Explorler)
(QtechHV-v011.dat) (1,252 KB)
"QtechHV-v011" is a limited version of the full program. That is, the "Information Embedding" part of the program will expire in 90 days after you have started using it. This is to protect the program from being abused.
If you have some good reasons to use a full version (or less limited version), or if you want to revive your expired program, we can allow you to do so if you agree with the conditions we have set forth for your special request. In that case, please contact us from the Message Sending page. Also, you can send us any message regarding Qtech Hide & View from the Message Sending page.
(Optional Version)
If you don't mind using a much more restricted program, but for the unlimited period of time, you can also download another version of Qtech Hide & View, that is, Qtech HV-v02. This version is not equipped with any embedding/extracting key setting, and the Complexity threshold value is preset to 40, but has no expiration time. The installation process and the usage are almost the same as Qtech HV-v011. You can download it from below.
This version may be very good for embedding some annotative information regarding the photos you took.
(for Internet Explorer)
(QtechHV-v02.dat) (1,338 KB)
(FYI)
Qtech Hide & View was implemented by Visual C++ environment. It took several years to finalize the deliverable version. We believe this program is the best of all steganographic software currently available on a commercial/non-commercial basis.
We inform you that we have embedded very important information to loosen the limitation of the program in one of the images that are used in our Web pages. That information can initialize the expiration setting of the program and you can use it for ever. You can extract this information by using "Information Extracting" program of QtechHV-v011 together with secret access key and extracting parameters(?).
(We are just demonstrating that our program can embed secret information in a very secure manner.)
(Updated: Jan. 17, 2009 by Eiji Kawaguchi)