Act 7 Electronic Signatures Act 2011 (c) provide reasonably accessible means which enable a relying party to ascertain from the certificate— (i) the identity of the certification service provider; (ii) that the signatory that is identified in the certificate had control of the signature creation data at the time when the certificate was issued; (iii) that signature creation data were valid at or before the time when the certificate was issued; (d) provide reasonably accessible means which enable a relying party to ascertain, where relevant, from the certificate or otherwise— (i) the method used to identify the signatory; (ii) any limitation on the purpose or value for which the signature creation data or the certificate may be used; (iii) that the signature creation data are valid and have not been compromised; (iv) any limitation on the scope or extent of liability stipulated by the certification service provider; (v) whether means exist for the signatory to give notice under section 4(1); (vi) whether a timely revocation service is offered; (e) where services under paragraph (d) (v) are offered, provide a means for a signatory to give notice under section 4(1)(b) and, where services under paragraph d(vi) are offered, ensure the availability of a timely revocation service; (f) utilize trustworthy systems, procedures and human resources in performing its services. (2) A certification service provider shall be liable for its failure to satisfy the requirements of subsection (1). 15