158 No. 4 of 2021] Electronic Communications and Transactions (2) The certification authority shall, where the certification authority revokes the certificate under subsection (1), immediately notify the subscriber listed in the revoked certificate. Notice of revocation 50. (1) A certification authority shall, publish a signed notice of the revocation under section 48 in a repository specified in the certificate. (2) The certification authority shall, where one or more repositories are specified, publish a signed notice of the revocation in all those repositories. Appointment of registration authority 51. The certification authority may appoint any person as a registration authority as prescribed. Appeals under this Part 52. A person aggrieved with the decision of a certification authority may appeal to the Authority within fourteen days of receiving the move of suspension or revocation. PART VI DUTIES OF SUBSCRIBERS Generating key pair 53. (1) A subscriber shall, where the subscriber generates a key pair whose public key is to be listed in a certificate and accepted by the subscriber, generate that key pair using a trustworthy system. (2) This section shall not apply to a subscriber who generates the key pair using a system approved by a certification authority. Obtaining certificate 54. A subscriber shall ensure that all material representation to a certification authority for purposes of obtaining a certificate, including all information known to the subscriber and represented in the certificate, shall be accurate and complete to the best of the subscriber’s knowledge and belief, regardless of whether such representations are confirmed by the certification authority. Acceptance of certificate 55. (1) A subscriber is deemed to have accepted a certificate if the subscriber— (a) publishes or authorises the publication of the certificate (i) to one or more persons; or (ii) in a repository; or (b) otherwise demonstrates approval of the certificate while knowing or having notice of its contents. (2) A subscriber who accepts a certificate issued by a certification authority, shall certify that—