"key pair", in an asymmetric cryptosystem, means a private key and its mathematically related public key, having the property that the public key can verify a digital signature that the private key creates; "licensed certification authority" means a certification authority licensed by the Controller; "Minister" means the Minister to whom responsibility for the subject of Information Technology is assigned; private key" means the key of a key pair used to create a digital signature; public key" means the key of a key pair used to verify a digital signature; “public sector agency" includes any Ministry or Government Department, local authority or statutory body; "record" means information that is inscribed, stored or otherwise fixed on a tangible medium or that is stored in an electronic or other medium and is retrievable in perceivable form; “repository" means a system for storing and retrieving certificates or other information relevant to certificates; "security procedure" means a procedure for the purpose of – (a) verifying that an electronic record is that of a specific person; or (b) detecting error or alteration in the communication, content or storage of an electronic record since a specific point in time, which may require the use of algorithms or codes, identifying words or numbers, encryption, answerback or acknowledgment procedures, or similar security devices; “subscriber" means a person who is the subject named or identified in a certificate issued to him and who holds a privatekey that corresponds to a public key listed in that certificate; "transaction" means an action or set of actions relating to the conduct, of business, commercial, or public sector activities and occurring between 2 or more persons; "trustworthy system" means computer hardware, software, and procedures that (a) are reasonably secure from intrusion or misuse; (b) provide a reasonable level of availability, reliability and correct operation; (c) are reasonably suitable for performing their intended functions; and