SQL>
SQL> declare
2 l_in_val varchar2(2000) := 'CriticalData';
3 l_hash raw(2000);
4 begin
5 l_hash := dbms_crypto.hash (
6 src => UTL_I18N.STRING_TO_RAW (l_in_val, 'AL32UTF8'),
7 typ => dbms_crypto.hash_sh1
8 );
9 dbms_output.put_line('Hash='||l_hash);
10 end;
11 /
SQL>