From: Todd Benson <caduceass@...>
Date: 2008-08-03T15:32:24+09:00
Subject: Re: alphanumeric encrypt/decrypt

On Sun, Aug 3, 2008 at 12:19 AM, Ruby Facet <sechelon@ymail.com> wrote:
> Hello,
>
> Is there an encryption (decryption) routine that will return only
> alphanumeric characters? Looking forward to your help.
>
> RF

s = 'aoa3(;12)>,$!'
[s].pack('m').chomp

=> "YW9hMyg71mwyKT4sJC="

I haven't read the RFC for base64, but it looks like you would then
need to allow the '=' symbol along with letters and numbers, but no
other special characters besides that.  Perhaps '=' is a padding
character.

cheers,
Todd