Oracle Utility to encrypt and decrypted data

Thanks to Robet for sharing the Oracle Utility to encrypt and decrypted.
Below is example to encrypt and decrypted.

declare
l_encrypted VARCHAR2(1000);
l_decrypted VARCHAR2(1000);
l_key VARCHAR2(20):='7777888855551111';
BEGIN
DBMS_OBFUSCATION_TOOLKIT.desencrypt(input => UTL_RAW.cast_to_raw('4505111111111331'),
KEY => l_key,
encrypted_data => l_encrypted);
dbms_output.put_line('l_encrypted = '||l_encrypted);
DBMS_OBFUSCATION_TOOLKIT.desdecrypt
(input=> l_encrypted,
KEY => l_key,
decrypted_data => l_decrypted);
dbms_output.put_line('l_decrypted = '||l_decrypted);
END;

that's for Now ( I am really busy, to do something with ADF Mobile)