Qtech Hide & View Download Page


Please read the Qtech Hide & View page first, and then download.

"setup-Qtechhideview-v011a.exe" is the installation program of Qtech Hide & View v011 (Qtech-HV_v011 in short) . You can download it from here by just clicking the "Download" button. The downloaded file name is  "setup-Qtechhideview-v011a.dat". So, you must first change its extension part from ".dat" to ".exe", then click to install the program (Qtech-HV_v011). All the program files are located in "Qtech-HV011" folder under "Program Files (x86)" folder by default. "READme" file is also included in Qtech-HV011 folder. Please read it carefully to understand how to handle the program.

(Note) We recommend that you create a Desktop Icon by putting a check-mark on an option box when installing.



Also, it might be good for you to view a short video (little old though) for understanding the way you use the program.

Watch Video

(This video is also accessible from https://www.youtube.com/watch?v=Pkp_3X3Rkj8)

"Qtech-HV_v011" is a limited version of the full program. That is, the "Information Embedding" part of the program is set to expire in 90 days after your installation. This is to protect the program from being abused. This expiration scheme was designed for Windows XP in early years. Presently, it will also work on Windows 7, and 8/8.1 normally in most cases.  In some very special case, however, a message "already expired" could appear even at its first use. In that case, you may visit this page.

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 setting. The installation process and the usage are almost the same as Qtech-HV_v011. You can download it from below. This version may be good for embedding annotations in the variety of photos which you took.







Qtech Hide & View was implemented by Visual C++ environment. It took several years to finalize the deliverable version. We estimate the total work hours contributed were equivalent to 250 - 300 thousand US dollars. We believe this program is still the best of all image-steganography software currently available on a commercial/non-commercial basis.

We inform you that we have embedded very important information to initialize the expiration setting of the program in one of the images that are used in our Web pages. You can extract this information by using Information Extracting program of QtechHV-v011 together with  a secret access key and extracting parameters. We are demonstrating that our program can embed secret information in a very secure manner.

We are always seeking volunteers to support us to develop newer BPCS-Steganography programs. Please send us a message to pledge your donation via above mentioned Message Sending page. We will be ready to offer some benefit to use Qtech-HV_011 almost as the full version.



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(Updated: May 23, 2015  by Eiji Kawaguchi)



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