http://snippets.dzone.com/posts Sun, 07 Sep 2008 07:19:05 GMT DZone Snippets: hashing code http://snippets.dzone.com/posts/show/263 I need a fast, user friendly hash. This means I want it to be only capital letters and digits. No symbols that people can't pronounce, and no mixed case to be misunderstood on the phone, etc. Use a hashing method like MD5 or SHA1 first, and then apply this.. <br /> <br />Ruby <br /><code>newhash = oldhash.scan(/./).map{|t1| t2 = t1[0] % 36; t2 < 26 ? (t2+65).chr : (t2+22).chr }.join</code> <br />Perl <br /><code>$newhash = join "", map { $t1 = ord($_) % 36; $t1 < 26 ? chr($t1+65) : chr($t1+22) } split(//, $oldhash);</code> <br />This turns any hash into only using [A-Z0-9]. Even a 8 character hash/key using [A-Z0-9] results in 2,821,109,907,456 combinations ;-) Sun, 08 May 2005 00:11:47 GMT http://snippets.dzone.com/posts/show/263 peter (Peter Cooperx)