Electronic authentication system and electronic authentication method

An electronic authentication system comprising:

• an ID provider configured to issue a digital ID to a user after performing identity proofing on the user;
• a first certification authority configured to issue a first electronic certificate to the user, the first electronic certificate being certified by government;
• and
• a second certification authority configured to issue a second electronic certificate to the user, a second electronic certificate being certified by self or by a private third-party organization,
• wherein the first certification authority describes the digital ID, issued to the user by the ID provider, in the first electronic certificate,
• the second certification authority describes the same digital ID as that of the first electronic certificate in the second electronic certificate.

An electronic authentication method comprising the steps of:

• performing identity proofing on a user by eKYC using an official identification document;
• issuing a digital ID to the user after the identity proofing;
• issuing, from a first certification authority to the user, a first electronic certificate certified by government;
• issuing, from a second certification authority to the user, a second electronic certificate certified by self or by a private third-party organization;
• and
• storing the digital ID, the first electronic certificate, and the second electronic certificate in a memory of a user terminal in possession of the user,
• wherein the first certification authority describes the digital ID, issued to the user, in the first electronic certificate when issuing the first electronic certificate,
• the second certification authority describes the same digital ID as that of the first electronic certificate in the second electronic certificate when issuing the second electronic certificate.