DESEncrypt Function don't work with any charakter

Question

Hi!
I wrote a function to encrypt data using the DESEncrypt function:
Create or replace function verschluessel (input_str varchar2,key_string varchar2) return RAW as
input_string varchar2 (4000);
encrypted_string varchar2(4000);
raw_input RAW(4000);
raw_key RAW(128) := UTL_RAW.CAST_TO_RAW(key_string);
encrypted_raw RAW(4000);
test smallint := 8 - mod(length(input_str),8);
ergaenz varchar2(7);
begin
loop
if test = 0 OR test = 8 then
exit;
end if;
ergaenz := ergaenz || ' ';
test := test - 1;
end loop;
input_string := input_str || ergaenz;
raw_input := UTL_RAW.CAST_TO_RAW(input_string);
dbms_obfuscation_toolkit.DESEncrypt(input => raw_input,key => raw_key,
encrypted_data => encrypted_raw);
return encrypted_raw;
end verschluessel;
The problem is, if the input_string contains german umlaute or special french characters, the error message ORA-28232 "Invalid input size for Obfuscation toolkit" appears.
How can I solve that ?
Thanx Andri.

Answer 1

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