Verify a document's e-signature
Find out who signed a document and whether the Kazakhstan NCA signature is valid
The file is checked in memory and not stored.
How to verify an electronic signature
Upload a signed file: a Doodocs card (PDF), a .cms or .p7s signature, a ZIP with the document and its signatures, a PDF with an embedded signature or a signed XML. Every signature found is checked.
For each signature we check that it matches the document, that the certificate was issued by the National Certification Authority of Kazakhstan, that it is not revoked and whether it carries a timestamp. The cryptographic checks run on KalkanCrypt of the NCA.
FAQ
Which signatures are supported?
Kazakhstan NCA signatures (GOST and RSA) made with NCALayer, eGov Mobile, eGov Business, Doodocs, ezSigner, iDocs and other e-document systems.
What does “valid at signing” mean?
The signer's certificate has expired, but the signature was made while it was valid. The NCA no longer answers status requests for expired certificates, so it cannot be confirmed that it was not revoked at that moment.
Is my file stored?
No. The file is checked in memory and not stored; it does not appear in your history.