retrieve photos from an encrypted iphone backup file

dear all

I really need your help.

I've experienced some problems with the wifi connections made with my iphone. To solve this I read here and there that it might work to factory reset the phone so I did but first I made a backup in itunes.

No I have a big problem not only I didn't solve my wifi connection problem but now I can't restore my phone including last christmas family photos. Sometime ago (I realy can't remember when) I may have checked the box to encrypt my iphone backup. I don't have any ideia of which password I may insert back then.

After sending all yeasterday eavening trying passwords that I might have used I give up to restore the phone but I'm very said because the lost of the photos.

Please tell me that there is a way to retrive the photos from the encrypted folder.

The files are easy to locate because of the size but I tried to open them an it doesn't work. I also tried to change the file extension to jpeg and still doesn't work.

I'm not a computer genious so I don't know what to do.

Please help.

Thanks