P.U.(A) 359/98
DIGITAL SIGNATURE REGULATIONS 1998
PART I - PRELIMINARY
Regulation 2. Interpretation.
In these Regulations, unless the context otherwise requires -
"approved digital signature scheme" means a digital signature scheme approved under regulation 29;
"approved fee" means a fee or charge imposed by a licensed certification authority, a recognised repository and a recognised date/time stamp service under the Act and these Regulations that is approved by the Controller under regulations 40, 50 and 63 respectively;
"certified public accountant" means a public accountant registered under the Accountants Act 1967 [Act 94];
"distinguished name" means a set of data that identifies a real-world entity, such as a person, in a computer-based context;
"hardware based" means in a token or smart card or other external device;
"hash function" means an algorithm mapping or translating one sequence of bits into another generally smaller set, known as the hash result, such that -
(a) a message yields the same hash result every time the algorithm is executed using the same message as input;
(b) it is computationally infeasible that a message can be derived or reconstituted from the hash result produced by the algorithm; and
(c) it is computationally infeasible that two messages can be found that produce the same hash result using the algorithm;
"hash result" means the output produced by a hash function upon processing a message;
"licensed" means to be issued with the operation stage of the licence;
"public-key algorithm" means an algorithm designed to create different signing and verification keys where the verification key can be made public and the signing key cannot in a reasonable amount of time be calculated from the verification key;
"qualified auditor" means a certified public accountant or an accredited computer security professional registered as a qualified auditor under regulation 41;
"qualified right to payment" means an award of damages against a licensed certification authority by a court having jurisdiction over the licensed certification authority in a civil action under the Act;
"recognised" means to be issued with the operation stage of the certificate of recognition;
"software based" means in the computer system or programmes;
"subliminal channel" means a channel within a digital signature that allows subliminal text to be sent within the digital signature;
"suitable guarantee" means a suitable guarantee under regulation 23.
