What are the functions of Controller of Certifying Authority as per the Information Technology Act, 2000?

As per section 18 of Information Technology Act, 2000, the Controller of Certifying Authority may perform all or any of the following functions, namely:- Exercising supervision over the activities of Certifying Authorities; Certifying public keys of the Certifying Authorities; Laying down the standards to be maintained by Certifying Authorities; Specifying the qualifications and experience which employees of the Certifying Authorities should possess; Specifying the conditions subject to which the Certifying Authority shall conduct their business; Specifying the contents of written, printed or visual materials and advertisements that may be distributed or used in respect of a Digital Signature Certificate and the public key; Specifying the form and content of a Digital Signature Certificate and the key; Specifying the form the manner in which accounts shall be maintained by the Certifying Authorities; Specifying the terms and conditions subject to which auditors may be appointed and the remuneration to be paid to them; Facilitating the establishment of any electronic system by a Certifying Authority either solely or jointly with other Certifying Authorities and regulation of such system; Specifying the manner in which the Certifying Authorities shall conduct their dealings with the subscribers; Resolving any conflict of interests between the Certifying Authorities and the subscribers; Laying down the duties of the Certifying Authorities; Maintaining a data-base containing the disclosure record of ever Certifying Authority containing such particulars as may be specified by regulations which shall be accessible to public.