Difference between revisions of "PTCrypt"
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Revision as of 19:56, 13 July 2006
(Note that in the future this page is likely to include tricks for circumventing this particular "Copy Protection" scheme. Please feel free to add any such instructions)
- make sure Java is installed on your computer
- download PTcrypt
- unpack the zip file and put the PTCrypt.jar where convenient to you
- Double-Click on PTCrypt.jar
- Enter the path to the image. Example:
- Browse to the file you want to encrypt and click "Open"
- Enter the new file name. Choose the extension based on the kind of encryption you want (see encryption option below).
- Important: keep a backup copy of the unencrypted JPG.
Disclaimer: PTCrypt will make stealing panoramas more difficult but not impossible. All encryption scheme supported by PTCrypt have been broken.
JPC: full path
- Purpose: prevent stealing. The pano will display only when the applet is displayed in an HTML page at the exact URL entered as path.
- Advantage: strongest PTCrypt protection.
- Disadvantage: Can't be used with variables URL (such as those that have GET parameters after the question mark). Can't be used within a Windows file system.
- Examples when it will not display:
http://www.thieves.com/pano.php?id=78&gui=modern http://www.photopla.net/pano.php?id=78&gui=antique C:\downloaded\panorama.jpc
JPB: partial path
- Purpose: more flexibility than JPC
- Advantage: will run also from a local file system
- Disadvantage: easy to steal
- Example when it will display and should not:
JPA: fixed key
- Purpose: prevent editing.
- Advantage: most flexible - can be displayed everywhere
- Disadvantage: no theft protection