For developers

developers meeting

To start using NCA of the RK registration certificates in information systems, an IS user or his/her representative should obtain an information systems developer`s kit of the NCA of the RK containing libraries and test registration certificates. You need to do the following:

1. Sign the completed letter and act using the EDS of the “First Head” or “Employee with the right to sign” of your organization in the ezSigner service (documents in CMS format will be generated).

2. Send documents in CMS format to e-mail

3. You will be sent a link to download the developer kit.

Alternative option: Send a signed, stamped letter and 2 copies of the act of acceptance and transfer to JSC “National Information Technologies”, at the address: Nur-Sultan, Business Center “EXPO”, 55/15 Mangilik El Ave., block C 2.3, subscriber box for VH. letters in the lobby.


NCA of the RK is only responsible for the provision of systems developer`s kit of the NCA of the RK; delivery of consultations related to   officials versions of NCA of the RK encryption provider provided in a developer`s kit and a document describing rules for digital signature and registration certificates of NCA of the RK verification.   

Information system owner is responsible for verification of signature.

For more details contact our specialists via e-mail: .
Should any technical issues arise, contact us via e-mail

Service name Address
Time stamp service (http protocol)
The list of revoked certificates
CRL (Live), CRL (Reserve)
Delta CRL (Live), Delta CRL (Reserve)
CRL (Live), CRL (Reserve)
Delta CRL (Live), Delta CRL (Reserve)
Online Certificate Status Protocol (RSA, GOST) (http protocol)

Kalkan Crypt compliance certificate

Guidelines for information systems upon interaction with NCA of the RoK

Archival registration certificates of NCA of the RoK

Rules for verification of digital signature authenticity

Requirements to NCALayer modules development