SecureBlackbox can access, use and manage X.509 certificates and associated private keys, stored on cryptocards and USB cryptotokens. The device should be accessible via either PKCS#11 or CryptoAPI interface to be used with SecureBlackbox. Unfortunately SecureBlackbox doesn't support legacy devices, that don't support at least one of those interfaces.

For accessing certificates via PKCS#11 interface you need to use ElPKCS11Storage class. For acessing certificates via CryptoAPI use ElWinCertStorage class.