Subscribers should personally visit KICA offices for registration or access KICA website for registration forms depending on the class of KICA certificates being sought. They should also undergo personal identification following personal identification procedures stipulated by "4.1 Personal Identification for Issuance of Certificates" of these Rules.

When registration and personal identification are completed, subscribers generate Key pair using software provided by KICA or personal software and transmit certificate application message to KICA using their user identification number, assigned to them at the time of registration, to guarantee security.

a. Before issuing certificates, KICA performs the following points of verification:

1. ① Personal identification of applicants, as described in "4.1 Personal Identification for issuance of Certificates" of these Rules.
2. ② Uniqueness of public key submitted by an applicant.
3. ③ Whether the Public key submitted by an applicant matches private key that the applicant owns.
4. ④ The uniqueness of DN (Distinguished Name) submitted by the subscriber.

b. A certificate issued by KICA contains the following details:

1. ① Applicant 's name.
2. ② Applicant 's private key.
3. ③ Method of digital signature used by an applicant and KICA.
4. ④ Serial number of the certificate.
5. ⑤ Validity of the certificate.
6. ⑥ Name of KICA as an issuer of a certificate.
7. ⑦ Scope of certificate's use and restrictions to its application
8. ⑧ Information on representation in case subscriber holds representation rights for a third party.

c. In general, certificates are issued within 1 to 3 days from the date of application for issuance of certificates using the key pair by an applicant. This is provided that the subscriber has filed application forms and other supporting documents, has paid required fees stipulated by these Rules and completed personal identification process stipulated by "4.1 Personal Identification for Issuance of Certificates" and "5.3 Registration Authority".
However, issuance of certificates may be delayed or rejected if the information presented by the subscriber is inaccurate or the subscriber fails to pay the required fees. Issuance of certificates may also be delayed when the number of subscribers is unusually large as in the case of a group subscription.

3.2.2.1 Reasons for re-issuance of certificates

3.2.2.2 Application for re-issuance of certificates and re-issuance procedure

3.2.3.1 Reasons for renewal of certificates

3.2.3.2 Application for renewal of certificates and renewal procedure

Reasons for suspension of a certificate are as follows:

a. When the subscriber or his representative applies the suspension of a certificate.
b. When the subscriber violates any of these Rules.
c. When the Minister of Information & Communications deems it necessary to safeguard security and reliability of certification services.

Only the subscriber or his representative can apply for suspension of a certificate.

3.4.3.1 Application for suspension of a certificate

On completion of the application form for suspension of a certificate, the subscriber can pay personal visit to one of the KICA offices to file the application, or transmit the application signed by his private key through on-line communication networks.

3.4.3.2 Personal identification

ICA verifies the subscriber's personal identification pursuant to "4.4 Personal Identification for Suspension and Revocation of a Certificate" of the Rules.

3.4.3.3 Renewal and announcement of the list of suspended certificates

KICA renews and announces the list of suspended certificates immediately, so that anybody can search the list at any time through certification practice systems. The announcement will be posted on a directory service, as shown under "5.2.2.4 Provision of directory service" of these Rules, and the time when it is posted on directory service will be construed as the time of announcement.

Only a subscriber or his representative can apply for reinstatement of a certificate.

3.5.2.1 Application for reinstatement of a certificate

KICA verifies the subscriber's personal identification pursuant to "4.5 Personal Identification for Reinstatement of a Certificate" of these Rules.

3.5.2.2 Personal identification

KICA verifies the subscriber's personal identification pursuant to "4.5 Personal Identification for Reinstatement of a Certificate" of these Rules.

3.5.2.3 Measures of reinstatement of a certificate

KICA takes measures so that anybody can verify the reinstatement of certificates at any time through Certification practice systems by deleting the corresponding certificates from the list of revoked certificates.

Application for reinstatement of a certificate should be filed within 6 months from the date of suspension. Unless application for reinstatement is filed within the specified time limit, the corresponding certificate will be automatically revoked.

a. KICA revokes the corresponding certificate when any of the following reasons arise:

1. ① When subscriber or his representative applied to KICA for revocation.
2. ② When KICA discovers that the subscriber obtained his certificate by fraud, forgery, or other illegal means.
3. ③ When KICA discovers the death, missing, or dissolution of the subscriber or his organization.
4. ④ When KICA discovers the subscriber's Private key has been lost, damaged, stolen, or leaked.
5. ⑤ When the subscriber violates any of these Rules.

b. When the designation of KICA as licensed Certification Authority is cancelled, the corresponding certificates are revoked.

c. When notified by the subscriber that his Private key has weaknesses, or when he discovers that his Private key is lost, damaged, stolen or leaked for other reasons, or if he discovers that there are weaknesses in his Key pair or algorithm, KICA revokes the corresponding subscriber's certificate pursuant to 5.2.2.3 of these Rules.

The subscriber or his representative (including testamentary executor or legal guardian) can apply for revocation of a certificate.

3.6.3.1 Application for revocation of a certificate

3.6.3.2 Personal identification

3.6.3.3 Renewal and announcement of the list of revoked certificates

If reasons for revocation of certificates and the identity of the subscriber who applied for revocation are confirmed, then KICA will revoke the corresponding certificates promptly, as there is no grace period for processing revoked certificates at KICA.