Act 7 Electronic Signatures Act 2011 “advanced electronic signature” means an electronic signature, which is— (a) uniquely linked to the signatory; (b) reliably capable of identifying the signatory; (c) created using secure signature creation device that the signatory can maintain; and (d) linked to the data to which it relates in such a manner that any subsequent change of the data or the connections between the data and the signature are detectable; “asymmetric cryptosystem” means an algorithm or series of algorithms, which provide a secure key pair; “authorised officer” means the Controller or a police officer or a public officer performing any functions under this Act; and includes any public officer authorised by the Minister or by the controller to perform any functions under this Act; “certificate” means a data message or other records confirming the link between a signatory and a signature creation data; “certification service provider disclosure record” means an online and publicly accessible record that concerns a licensed certification service provider, which is kept by the Controller under subsection 21(5); “certification practice statement” means a declaration of the practices, which a certification service provider employs in issuing certificates generally or employs in issuing a particular certificate; “certification service provider” means a person that issues certificates and may provide other services related to electronic signatures; 5