Patent ID: 9509516
Filing Date: 2016-11-29
CPC Classification: H04L

Claim Text:
1. An apparatus for providing a digital signature, comprising: a certificate unit configured to store one or more certificates and to generate digital signatures based on private keys corresponding to the one or more certificates; a display unit configured to display certificate information based on signature content received from a signature-requesting terminal; an input unit for receiving a selection input for a certificate related to the displayed certificate information; and a control unit for determining whether the certificate unit is capable of performing a digital signature generation function corresponding to a selected certificate, wherein, the control unit is configured to command the certificate unit to create the digital signature based on a private key corresponding to the selected certificate based on determining that the certificate unit is capable of performing the digital signature generation function, wherein, the control unit is configured to create the digital signature based on a private key corresponding to the selected certificate based on determining that the certificate unit is not capable of performing the digital signature generation function, and wherein the control unit is configured to transmit the digital signature to the signature-requesting terminal.