Encrypting and Decrypting Data(Its Very Urgent, Please Help.)

Question

Hi,
Can anyone tell me some idea in the below mentioned details.
Iam creating a Function for Encrypting and Decrypting Data Values using
DBMS_OBFUSCATION_TOOLKIT with UTL_RAW.CAST_TO_RAW by using
Key Value as normal.
But the problem, is it possible to have the key value more than 8.
Its showing me error when i give the key value less than 8 or more than 8.
Can u tell me why it happens, is that the limit of the key value or is any other way to do that.
Its Very Urgent, Please Help.
Thanks,
Murali.V

Answer 1

Is this what you're looking for?
Usage Notes
If the input data or key given to the DES3DECRYPT procedure is empty, then the procedure raises the error ORA-28231 "Invalid input to Obfuscation toolkit."
If the input data given to the DES3DECRYPT procedure is not a multiple of 8 bytes, the procedure raises the error ORA-28232 "Invalid input size for Obfuscation toolkit." ORA-28233 is NOT applicable for the DES3DECRYPT function.
If the key length is missing or is less than 8 bytes, then the procedure raises the error ORA-28234 "Key length too short." Note that if larger keys are used, extra bytes are ignored. So a 9-byte key will not generate an exception.
C.