law: Information Technology Act, 2000
  18. Functions of Controller. – 
  The Controller may perform all or any of the
  
  following function, namely:- 
  (a) exercising supervision over the activities
  
  of Certifying Authorities;
  (b) certifying public keys of the Certifying
  
  Authorities;
  (c) laying down the standards to be maintained
  
  by Certifying Authorities;
  (d) specifying the qualifications and
  
  experience which employees of the Certifying Authorities should possess;
  (e) specifying the conditions subject to which
  
  the Certifying Authority shall conduct their business;
  (f) 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;
  (g) specifying the form and content of a
  
  Digital Signature Certificate and the key;
  (h) specifying the form the manner in which
  
  accounts shall be maintained by the Certifying Authorities;
  (i) specifying the terms and conditions
  
  subject to which auditors may be appointed and the remuneration to be paid to
  
  them;
  (j) facilitating the establishment of any
  
  electronic system by a Certifying Authority either solely or jointly with other
  
  Certifying Authorities and regulation of such system;
  (k) specifying the manner in which the
  
  Certifying Authorities shall conduct their dealings with the subscribers;
  (l) resolving any conflict of interests
  
  between the Certifying Authorities and the subscribers;
  (m) laying down the duties of the Certifying
  
  Authorities;
  (n) 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.