System for providing certification confirming agency service using double electronic signature

A system for providing a certification confirming agency service using a double electronic signature, comprising:

• a transmitting mobile terminal for receiving a message from a user, performing a security function required for message encoding and electronic signature of a sender, and performing a message transmitting function;
• an application service system for receiving the message transmitted from the transmitting mobile terminal, requesting a validity check of a sender's certificate and a sender's certification check to a certification confirming agency system, and receiving from the certification confirming agency system and transferring to a receiving mobile terminal a message of the certification confirming result;
• the certification confirming agency system for receiving a request for confirming the validity of the sender's certificate and a sender's signature value from the application service system, extracting the validity of the sender's certificate and the sender's signature value by analyzing a statement transmitted from the transmitting mobile terminal through the application service system, performing the validity check with respect to the sender's certificate and signature value, and transmitting a result of checking with its signature attached thereto back to the application service system;
• the receiving mobile terminal for restoring the transmitted statement by receiving and decoding the message from the application service system, and outputting a restored statement so that a receiver can view it;
• a certificate issuing system for issuing electronic certificates to mobile terminal users;
• and
• a certificate directory system for noticing the electronic certificates issued by the certificate issuing system so that wire/wireless subscribers can peruse them through a wire network and a radio network.