The Information Technology Act, 2000
§10 — Power to make rules by Central Government in respect of electronic signature
The Central Government may, for the purposes of this Act, by rules, prescribe– (a) the type of [electronic signature]; (b) the manner and format in which the [electronic signature] shall be affixed; (c) the manner or procedure which facilitates identification of the person affixing the [electronic 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 [electronic signatures].