ascertain that such signature is issued by the person concerned; “Electronic medium”, means the computer programme, or any other electronic device, used for carrying out any process, for the initiation, sending or receiving an information message, without personal intervention; “Receiver, of the message”, means the person, to whom the initiator of the message intends delivery of the information included therein ; “Initiator, or sender of the message”, means the person, who by himself, or by whoever he may authorize, initiates the data message, and sends the same, before saving it; “Authentication certificates”, mean the certificates issued by the person licensed to authenticate, for the proof of attribution of the digital signature, to a particular person, in accordance with the approved authentication procedure; “Exchange of data”, means the electronic transfer and exchange of data, between two or more parties; “Signatory”, means any person, who is in possession of a digital signature device, pertaining thereto, from the authenticating person, and effects signature personally , or through an