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Re: Re: Re: Compact MD5 representationby Anonymous Monk |
on Mar 20, 2001 at 03:29 UTC ( [id://65578]=note: print w/replies, xml ) | Need Help?? |
I'm a php person, so I can't offer code, but I do understand the question which is being asked.
Rather than showing a url of /?a=123456, the questioner is looking for a url that says /?a=rqz instead. By using the full range of alphanumeric characters, he is hoping to reduce the MD5 from a 32 character string (using 0-9,a-f), into something much smaller, maybe a 12 character string (using 0-9, a-z). This has the benefit of being shorter, while still spanning the same range of values (2^32) as MD5. php has the function: string base_convert (string number, int frombase, int tobase), which I'm sure has an equivalent in perl. Once you find this function the problem is reduced to: $new_number = base_convert( md5('whatever'), 16, 36 ); // 10 digits + 26 alphanumeric Hopefully some perl guru will be able to point you in the right direction. --Robert
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