how to encode and decode an image file

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Hello,

I'm tring to encode an image file that after the encoding the image will be black and decode it by entering a password (that set by the user).

Can anyone help me with that?

Thanks!!!!

Posted 10-May-11 21:17pm

mishkaPishka

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Jefis · Answer 1 · 2011-05-10T21:23:00

Solution 1

Easy,
0) Use fancy algorithm to encode images, (Images won't we displayed by any software, because they are encoded).
1) Read your encoded image. var data = File.ReadAllBytes("<path>");
2) Decode byte array. Use some fancy algorithm.
3) Restore image, var img = new Bitmap(new MemoryStream(data)); and display in on the form.

Posted 10-May-11 21:23pm

Jefis

Updated 10-May-11 22:12pm

v2

Comments

mishkaPishka 11-May-11 3:26am

Hey
first, im using winform with C#.
second, i have problem to encode my file first so i have nothing to read yet.
my question is how to encode the image

Sergey Alexandrovich Kryukov 11-May-11 3:38am

Winforms: irrelevant. By the way, "new Bitmap" is from System.Drawing which is usually used with Froms. Encode: "0) Encode image bytes. Use some fancy algorithm." Better now?
--SA

Sergey Alexandrovich Kryukov 11-May-11 3:36am

Not too bad. Just add the item "encode". My 4.
--SA

Olivier Levrey 11-May-11 4:18am

I agree. Have a 5.