Electronic Communications and Transactions [ N o . 21 of 2 0 0 9 281 (4) A law enforcement officer to w h o m a key is released under subsection (3) shall use the key in the manner and for t h e purpose and duration provided for under a court order authorising the release and use a n d shall n o t e x c e e d t h e d u r a t i o n o f t h e e l e c t r o n i c surveillance for which the key is released. (5) A law enforcement officer to w h o m an encryption key is released shall, on or before the completion of the authorised release period, destroy t h e encryption key. 8 8 . (1) A key holder shall not disclose a record or any other personal information relating to an owner of a key held or managed by the key holder e x c e p t — (a) with the consent of the owner; or (b) to a law enforcement officer pursuant to a court order. Prohibition of disclosure of record or other information by key holder (2) A recovery agent shall not disclose to any person the use of a n y s t o r e d r e c o v e r y i n f o r m a t i o n , a n y d e c r y p t e d d a t a or communication or other assistance provided to a law enforcement officer in the performance of functions under this Act. (3) A person w h o contravenes subsection (1) or (2) commits an offence and is liable, upon conviction, to imprisonment for a period not exceeding twenty-five years but not less than fifteen years. (4) N o t h i n g in this Act shall be construed as prohibiting a recovery agent f r o m — (a) u s i n g or d i s c l o s i n g plaintext in t h e recovery a g e n t ' s possession, custody or control; (b) using or disclosing recovery information that is not stored recovery information held by the recovery agent under the circumstances described in this Act; or (c) using stored recovery information in the recovery agent's possession, custody or control; to decrypt any data or c o m m u n i c a t i o n in the recovery a g e n t ' s possession, custody or control, where the applicable law otherwise requires the recovery agent to provide the data or communication to a law enforcement officer in plaintext or other form readily understood by the law enforcement officer. 8 9 . A person w h o uses an encryption to obstruct or impede a law e n f o r c e m e n t officer or in any m a n n e r interferes with t h e performance by the law enforcement officer of any functions under this Act commits an offence and is liable, upon conviction, to a fine not exceeding two hundred thousand penalty units or to imprisonment for a period not exceeding t w o years, or to both. Obstruction of law enforcement officer