Question

Instead of having parameters such as i want to have .

This is because I don’t want to offer a simple way to see all content just by replacing 12 with 13, 14, 15 etc.

So I need a method which can encode a number into a string, and than decode.

something like

httP://mysite.com?image=+encode(myNumber);when I create the link and 

decode(imageParam); when I get the value from the HTTp request.

Is there any method available which already does this?

Answer 1

Option 1:

Don’t use numbers to begin with. Use a GUID.

Option 2:

Hash your numbers. MD5 is a fast hash algorithm (though rather weak and the original value easily discoverable these days). You may want to use SHA1 or SHA2 instead.

Option 3:

Encrypt your numbers so you can decrypt them back later. This would normally be computationally very intensive.

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I would personally go with option 1 and not use integers at all.