This is an implementation of a one-time password authentication system as defined by RFC 2289 in the php programming language. otp.php has all the top-level functions: generator() generates a list of 50 OTP's valid_otp() tests a user entry to see if it is the correct password All of this software is licensed under the GPL. Send questions and comments to james.barkley@gmail.com Look up my gpg public key on http://pgp.mit.edu/ or any other public keyserver - here's the fingerprint: pub 1024D/C911105C 1999-01-02 James A. Barkley (This key specifically created to validate originator of released source code) <james.barkley@gd-ais.com> Key fingerprint = 7ED9 EB8E 572C 1B55 143A 2E85 5833 1CA2 C911 105C sub 2048g/9AB73059 1999-01-02