Patent ID: 8605296
Filing Date: 2013-12-10
Classification: G06F

Abstract:
1. A digital signature system, comprising: a service provider; a remote certificate server of the service provider for storing and maintaining at least one digital certificate of a user by the service provider; a printer driver stored in the user's computer for communicating with the service provider via a network; the printer driver obtaining verification of the user from the service provider via the network; the printer driver electronically placing on a human readable printable document a human readable digital signature of the user based on the remotely stored digital certificate and in a location on the human readable printable document selected by the user; wherein the remote certificate server assigns and stores a human readable identifier unique to the signature and human readable information related to signing of the human readable digital signature to permit subsequent validation of the human readable digital signature by utilizing the unique identifier; a remote storage server for storing a digital copy of the digitally signed human readable printable document including the human readable digital signature, the human readable identifier and human readable information related to the digital signing of the human readable printable document; and wherein a recipient of the digitally signed human readable printable document can validate the human readable digital signature, the human readable identifier and the human readable information related to the signing of the human readable digital signature by (1) viewing the human readable digital signature, the human readable identifier and the human readable information related to the signing of the human readable digital signature on the human readable printable document, or (2) providing the human readable identifier to the service provider via the network for comparison with the stored human readable identifier related to the signing of the human readable digital signature located on the digitally signed human readable printable document.