SQL> set serveroutput on
SQL> select * from emembers;

no rows selected

SQL> exec passwd_mnm.fuencrypt('fuju','x2345');
> input string                     : x2345
*** DES INPUT BUFFER NOT A MULTIPLE OF 8 BYTES - IGNORING EXCEPTION ***

PL/SQL procedure successfully completed.

SQL> exec passwd_mnm.fuencrypt('fuju','x2345678');
> input string                     : x2345678

PL/SQL procedure successfully completed.

SQL> select * from emembers;

EM_ID  EM_PASSWORD
--------- ------------------
fuju      R??em?g

SQL> exec passwd_mnm.fudecrypt('fuju');
> decrypted string output          : x2345678

PL/SQL procedure successfully completed.

SQL>