Complicated image name like flickr does and deny access just to original image

Question

If I upload a given image like my-image.jpg, then following image resizes occurs:

http://www.mysite.com/wp-content/uploads/YEAR/MONTH/my-image-100x100.jpg http://www.mysite.com/wp-content/uploads/YEAR/MONTH/my-image-200x150.jpg http://www.mysite.com/wp-content/uploads/YEAR/MONTH/my-image-500x300.jpg

also the original image is uploaded:

http://www.mysite.com/wp-content/uploads/YEAR/MONTH/my-image.jpg

I have two question about which actions try to:

1 Question

Rename image name to a complicated long name like 5702703214_85bfb55948.jpg:

http://www.mysite.com/wp-content/uploads/YEAR/MONTH/5702703214_85bfb55948.jpg

http://www.mysite.com/wp-content/uploads/YEAR/MONTH/5702703214_85bfb55948-100x100.jpg
http://www.mysite.com/wp-content/uploads/YEAR/MONTH/5702703214_85bfb55948-200x150.jpg
http://www.mysite.com/wp-content/uploads/YEAR/MONTH/5702703214_85bfb55948-500x300.jpg

2 Question

Avoid access to original image uploaded, let access to thumb, medium and large, but deny access just only to the original image uploaded?

Thanks in advance

Answer 1

create shortened URL function, then add filter on the_content() to replace all img src URL to shortened URL