To achieve OTP:
Use Linux /dev/urandom OR
Java crypto Random generator
Good OTP papers:
http://www.cryptomuseum.com/manuf/mils/files/mils_otp_proof.pdf
http://www.mils.com/fileadmin/user_upload/Broschüren/TEC-OTP-03E-01-H.pdf
http://users.telenet.be/d.rijmenants/en/onetimepad.htm