how to shorten the url in a mathematical approach

Question

I am looking into the possibility of shortening / encrypting a url which will be from 150 to 250 characters in length to maximum 12 characters using an algorithm. Initially I a

Answer 1

Is your goal primarily to shorten or to encrypt? You could probably specialize a compression algorithm enough to store a known-character-set URL dramatically, but that would not be effective for encryption purposes. I strongly doubt you could get a cryptographically sound encryption algorithm to achieve the specified level of compression, not to mention you're not discussing the allowable key lengths which might be tied into your scheme.