METHOD AND SYSTEM TO EFFECT A QUALIFIED ELECTRONIC SIGNATURE IN REMOTE MODE

摘要

A method is proposed to effect a qualified electronic signature of one or more electronic documents by more signer users in remote mode by utilizing a software that operates in a computer, for instance a personal computer, connected with a remote server, each signer user being in possession of a digital signature certificate and an electronic device for mobile communication with which a telephone identification number is associated. The method provides that the server obtains a hash of the document to be signed: alternatively, the software may calculate the hash and send it to the server, or the software may send the document directly to the server that calculates the hash. In addition to the hash and/or document, the computer sends a user identification code to the remote server. The server may communicate by telephone and comprises both the digital signature certificates, each digital signature certificate corresponding to a respective signer user, and a database in which a respective identification code is associated to a telephone identification number of each electronic device for mobile communication of each user. Besides, the method provides that through the electronic device for mobile communication a telephone communication takes place between the user and the remote server and during said telephone communication, the remote server verifies the match between the signer user in telephone communication and the received identification code and in case of match, the remote server effects the encryption of the hash through the digital signature certificate corresponding to the user in telephone communication and obtains a digital signature.