Use AWS Private CA to implement Matter certificates

You can use the AWS Private Certificate Authority API to create certificates that conform to the Matter connectivity standard. Matter specifies certificate configurations that improve the security and consistency of internet of things (IoT) devices across multiple engineering platforms. For more information about Matter, see buildwithmatter.com.

Matter 1.2, released in October 2023, supports DAC revocation using Certificate Revocation Lists (CRLs). To help you conform to the current Matter standard, when you enable CRL revocation for CAs that issue Matter certificates, in the CrlConfiguration object, in the CrlDistributionPointExtensionConfiguration structure, set OmitExtension to true.

Typically, CAs embed the CRL Distribution Point (CDP) in the certificates they issue so that the relying parties performing certificate chain validation can fetch the CRL and check the certificate status. In Matter, the CDP URI is not written to certificates. Instead, users fetch CDPs from the Matter Distributed Compliance Ledger (DCL), the trusted Matter data store. You must upload the CDP URI to the Matter DCL so that it can be discovered when validating DACs. For more information about determining the CDP URI, see Determining the CRL Distribution Point (CDP) URI . For more information about Matter, see the Matter DCL documentation.