(a) Officials and employees of the department shall respect the confidential nature of information supplied by inmates who cooperate in remedying abuses and wrongdoing in the penal system. Any official or employee who breaks such a confidence and thereby subjects a cooperating inmate to physical jeopardy or harassment shall be subject to suspension or discharge.

(b) Investigation reports and intelligence data prepared by the Internal Investigations Unit of the department shall be classified as confidential state secrets and privileged under law, unless declassified in writing by the commissioner.

(c) All institutional inmate files and central office inmate files of the department shall be classified as confidential state secrets and privileged under law, unless declassified in writing by the commissioner; provided, however, these records shall be subject to subpoena by a court of competent jurisdiction of this state.

(d) The commissioner shall designate members of the department to be the official custodians of the records of the department. The custodians may certify copies or compilations, including extracts thereof, of the records of the department. Subject to the provisions of this Code section, in response to a subpoena or upon the request of any appropriate government or judicial official, the department may provide a duly authenticated copy of any record or other document. This authenticated copy may consist of a photocopy or computer printout of the requested document certified by the commissioner or his or her duly authorized representative.