image security

[jaap]

I need some program that images can be protect against update. The images must still can be read.

The images will never be "unlocked"

So a encrypt/decrypt program is not enough.

Who can help me

mail at dj_000@hotmail.com

 

[ackka]

How to plan to have the images viewed, on the web, you transfer them to somebody ????

ackka
ackka@mad.scientist.com

http://home.cyberarmy.com/ackka

http://www.cultdeadcow.com

 

[jaap]

It can be viewed in Paint Shop Pro or something else. It will not go on the web. But the images may not be overwrite (Read Only). It must be inserted in the image and not an access by the OS

 

[Alt255]

The easiest and most practical way to prevent another person from modifying a file is to set permissions. Do not allow users to modify the original. A good example of this is the Tek-Tips logo at the top of this page. You can view it but it requires a great deal of knowledge (and foolishness) to change it without permission.

I can view the file, I can copy the file to my hard drive, I can change the file with Paint Shop Pro... but I can't overwrite the original.

If you are concerned about users modifying the file after making a copy you will have to use encryption or a similar protection scheme. This involves the creation of a program that descrambles a protected file and shows its contents without changing it.

There are ways to prevent physical media (disks etc.) from being copied and modified but the technology to prevent the modification of individual files does not exist and will probably never exist.

Nevertheless, it isn't hard to protect data. If you give us an idea of what you want to achieve (the "end result&quot we will help you find a practical way to do it.

Alt255@Vorpalcom.Intranets.com

"If you can get people to ask the wrong questions, they'll never find the right answers."[tt]
Thomas Pynchon[/tt]

Perhaps the reverse is also true....
​

 

[ackka]

The best way to do what alt255 discribed is to put the images on a Novell server, if you have one. The Novell server can be properlly modified to allow only certain things which will apply to all files. If you allow the person to actually place the file on their harddrive, it is extremely simple to change the permisions on the file. If you place the file on a Novell server or NT for that matter, you need a much higher level of knowledge to copy or modify these files. The advantage of this is you can use it just as easily as if the file was located on your harddrive....

You might also want to check out a basic data security book. Their are many at the library and they would cover this......

good luck

ackka
ackka@mad.scientist.com

http://home.cyberarmy.com/ackka

http://www.cultdeadcow.com

 

[jaap]

Here I am again

I read your reactions, but the right answer wasn't there.

I'm looking for some program that tiff files can be protected. The OS doesn't matter. Nobody may ever change these images even the administrator. Each file must be set readonly. The files must get a code or something to get readonly

Hope you'll understand it.........

 

[MasterRacker]

If you mean you're looking at some way to protect a file no matter where it is (ex. you want to mail it to someone who can't change it...) it can't be done. An image is an image. Image editors view and edit images.

You can control what people can do with images presented to them through your web page and you can control what people can do to files presented to them through a server but you can not control what they do to a file you physicall give them (i.e. on a disk, e-mail, etc.)

Also, keep in mind that even if you protect a file on a web server so I can't download it, I can still get a good copy by doing a screen capture. I can then modify my copy any way I want.
Jeff
masterracker@hotmail.com

If everything seems to be going well: you don't have enough information.......