law: Information Technology Act, 2000
  38. Revocation of Digital Signature
  
  Certificate. – 
  (1) A Certifying Authority may revoke a
  
  Digital Signature Certificate issued by it- 
  where the subscriber or any other person
  
  authorized by him makes a request to that effect; or
  upon the death of the subscriber; or
  upon the dissolution of the firm or winding up
  
  of the company where the subscriber is a firm or a company.
  Subject to the provisions of sub-section (3)
  
  and without prejudice to the provisions of sub-section (1), a Certifying
  
  Authority may revoke a Digital Signature Certificate which has been issued by
  
  it at any time, if it is of opinion that- 
  a material fact represent in the Digital
  
  Signature Certificate is false or had been concealed;
  a requirement for issuance of the Digital
  
  Signature Certificate was not satisfied;
  the Certifying Authority’s private key of
  
  security system was compromised in a manner materially affecting the Digital
  
  Signature Certificate’s reliability;
  the subscriber has been declared insolvent or dead
  
  or where a subscriber is a firm or a company, which has been dissolved,
  
  wound-up or otherwise ceased to exist.
  A Digital Signature Certificate shall not be
  
  revoked unless the subscriber has been given an opportunity of being heard in
  
  the matter.
  On revocation of a Digital Signature
  
  Certificate under this section, the Certifying Authority shall communicate the
  
  same to the subscriber.