AES256 Decryption

Hi Community,

I have been using the encryption/decryption as detailed here. Following is the scenario :

Retrieved the encrypted data from the server, with utf-8 encoded, xml content.

I am able to decrypt the data to NSData format using the decryption method(AES256 Decryption). But unable to convert the NSData hence obtained to NSString , by using NSUTF8/NSASCII encodings.

Please help, if any had faced this issue.

Thanks.