​1-Access to CSCA and DS Certificates

​​1-Access to CSCA and DS Certificates

For an inspection system in a receiving State to conduct ePassport validation, the inspection system must have access to certain information from the State that issued the travel document: Country Signing Certification Authority (CSCA) certificates, Document Signer Certificate (DSC) and Certificate Revocation Lists (CRLs) .


Most States will use a combination of bilateral exchange and information downloaded from the ICAO PKD to access the information that they need.



As explained on earlier pages, the CSCA Certificate forms the basis of the trust chain for an ePassport. You must check DS Certificates against the CSCA Certificate before you can trust them. Therefore, it is very important to validate CSCA Certificates that your State collects for ePassport validation.


Validating CSCA Certificates


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