[1] Digi-CA™ [2] uses vendor specific Cryptographic API to import keys and certificates into the Digi-Card™. The Digi-CA™ does not participate in the certificate usage process, which means that it does not provide applications that will use the card interface and installed keys and certificates to sign any data. On the assumption that only CWA 14890 compliant Digi-Cards™ are used in conjunction with the Digi-CA™, by association, Digi-CA™ complies with this standard.
Links:
[1] https://www.digi-sign.com/downloads/download.php?id=digi-ca-pdf
[2] https://www.digi-sign.com/digi-ca