Hi

I am looking for a way to encrpt jpg images

Nickie

Did you try google?

Hal Levy
Web Developer, PDI Inc.

NOT a Wiley/Wrox Employee

Yep, I've been trawling through google searches for a couple of days and I found loads of info on encryption but all seems to only work with txt, xml, etc files. I'm having no luck with trying to encrypt/decrypt jpg's.

I'm looking at reading the image in to a byte array using filestream and adding a key word to the start and saving, which will be the encryped file. Although its not really working at the moment but i'm still working on it.

Any other ideas would be appreciated.

Cheers

I have no idea- I never tried to encypt images. Which is why I suggested google.. that's what I would use if I needed to find out :)


Hal Levy
Web Developer, PDI Inc.

NOT a Wiley/Wrox Employee

Hi

Found a way to do this and if your interested heres how -

Read the Image into a filestream
Read the bloc of bytes from the filestream into a byte buffer
Loop round the byte array and insert a dummy byte every 10th byte

Do the opposite to decrypt.

Cheers

Nickie

I agree with nbryson

Try Secure Image from Artistscope.
There are limitations but it is really cleverly done.

To nbryson,
Is there an example somewhere about the technique you recommended (Read the Image into a filestream
Read the bloc of bytes from the filestream into a byte buffer
Loop round the byte array and insert a dummy byte every 10th byte)? I am a beginner in VB.NET and i have never worked with bloc of bytes.
Thanks.