The Central Government may, for the purposes of this Act, by rules, prescribe -

(a) the type of digital signature;
(b) the manner and format in which the digital signature shall be        affixed;
(c) the manner or procedure which facilitates identification of the        person affixing the digital signature;
(d) control processes and procedures to ensure adequate        integrity,  security and confidentiality of electronic records or        payments; and (e) any other matter which is necessary to        give legal effect to digital  signatures.