Revocation of KLASS3-SK 2010 intermediate certificate


SK ID Solutions announces that on 04.04.2023 the KLASS3-SK 2010 intermediate certificate will be marked revoked in root certificate revocation list (CRL). This is due to all the end entity certificates having been expired or revoked under given CA.

04.04.2023 the root certificate “EE Certification Centre Root CA” certificate revocation list (CRL) will be published, where intermediate certificate KLASS3-SK 2010 will be marked revoked.

In addition, the last KLASS3-SK 2010 intermediate CA revocation list is published since 23.03.2023. This means, that KLASS3-SK 2010 revocation list will no longer be updated. Service providers who use CRL’s issued by SK, do not need to download anymore the KLASS3-SK 2010 CRL afterwards. Please check the rules for requesting CRL’s in your services.

Supervision will be ceased for the KLASS3-SK 2010 in the next version of Trusted List (available at:

The KLASS3-SK 2010 validity confirmation service (OCSP) will be closed after certificate is marked with status withdrawn in Trusted List.

During 2010-2017 certificates corresponding to different profiles were issued from the KLASS3-SK 2010 certification chain, such as e-Seal, web server certificates, encryption certificates and server authentication.

This change does not affect the use of currently issued organization certificates from the KLASS3-SK 2016 certification chain.

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