Data Encryption using DBMS_OBSFUCATION_PACKAGE

Question

Hello Friends,
I want to encrypt EMPNAME column data in EMP table using
DBMS_OBSFUCATION_PACKAGE. I am not getting much help for this
package. can anybody suggest me some sites concerning
information on package ?
Thanx.
Adi

Answer 1

try this one.
I am pasting the procedure.
run catobtk.sql from sys
DECLARE
input_string VARCHAR2(16) := 'SRINIVAS';
raw_input RAW(128) := sys.UTL_RAW.CAST_TO_RAW(input_string);
#key_string VARCHAR2(16) := 'keepthesecretnum';
key_string VARCHAR2(16) := 'abcdefghijklmnop';
raw_key RAW(128) := sys.UTL_RAW.CAST_TO_RAW(key_string);
encrypted_raw RAW(2048);
encrypted_string VARCHAR2(2048);
decrypted_raw RAW(2048);
decrypted_string VARCHAR2(2048);
error_in_input_buffer_length EXCEPTION;
PRAGMA EXCEPTION_INIT(error_in_input_buffer_length, -28232);
INPUT_BUFFER_LENGTH_ERR_MSG VARCHAR2(100) :=
'*** DES INPUT BUFFER NOT A MULTIPLE OF 8 BYTES - IGNORING
EXCEPTION ***';
double_encrypt_not_permitted EXCEPTION;
PRAGMA EXCEPTION_INIT(double_encrypt_not_permitted, -28233);
DOUBLE_ENCRYPTION_ERR_MSG VARCHAR2(100) :=
'*** CANNOT DOUBLE ENCRYPT DATA - IGNORING EXCEPTION ***';
-- 1. Begin testing raw data encryption and decryption
BEGIN
dbms_output.put_line('> ========= BEGIN TEST RAW DATA
=========');
dbms_output.put_line('> Raw input : ' ||
sys.UTL_RAW.CAST_TO_VARCHAR2(raw_input));
BEGIN
sys.dbms_obfuscation_toolkit.DESEncrypt(input => raw_input,
key => raw_key, encrypted_data => encrypted_raw );
sys.dbms_output.put_line('> encrypted hex value : ' ||
rawtohex(encrypted_raw));
sys.dbms_obfuscation_toolkit.DESDecrypt(input => encrypted_raw,
key => raw_key, decrypted_data => decrypted_raw);
dbms_output.put_line('> Decrypted raw output : ' ||
sys.UTL_RAW.CAST_TO_VARCHAR2(decrypted_raw));
dbms_output.put_line('> ');
if sys.UTL_RAW.CAST_TO_VARCHAR2(raw_input) =
sys.UTL_RAW.CAST_TO_VARCHAR2(decrypted_raw) THEN
dbms_output.put_line('> Raw DES Encyption and Decryption
successful');
END if;
EXCEPTION
WHEN error_in_input_buffer_length THEN
dbms_output.put_line('> ' || INPUT_BUFFER_LENGTH_ERR_MSG);
END;
dbms_output.put_line('> ');
END;