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Intermediate CA (ICA) selection options at DigiCert
What are ICA certificates used for?
Certificate Authorities (CAs) use intermediate CA (ICA) certificates to issue certificates such as your TLS/SSL certificates. The ICA certificate links your certificate to the trusted root certificate enabling browsers and other applications to trust it.
Ordering
When ordering DigiCert TLS/SSL certificates, you can select the root or intermediate certificate to be used for signing the certificate.
The advantage: This allows you to adjust the ordered certificate to suit the specific system on which the TLS/SSL certificate will be implemented.
An ECDSA root signature can only be used with a private key that has been created with an ECC or ECDSA signature algorithm.
Overview of combinations
The following overview shows you the root / intermediate combinations offered by DigiCert, listed according to the certificate type.
| Product | Available Options |
|---|---|
| DigiCert Secure Site Pro EV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| DigiCert Secure Site EV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| DigiCert Secure Site Pro | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| DigiCert SecureSite | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| DigiCert Basic EV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| DigiCert Basic OV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-384 ECDSA Cert + SHA-384 ECDSA Root | |
| SHA-384 ECDSA Cert + SHA-1 Root | |
| Thawte SSL Webserver EV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| Thawte SSL Webserver Wildcard | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-384 ECDSA Root | |
| Thawte SSL Webserver | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-384 ECDSA Root | |
| Thawte SSL123 | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| Thawte SSL123 Wildcard | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| GeoTrust TrueBusiness ID EV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| GeoTrust TrueBusiness ID | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-384 ECDSA Root | |
| GeoTrust TrueBusiness ID Wildcard | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-1 Root | |
| SHA-256 ECDSA Cert + SHA-384 ECDSA Root | |
| QuickSSL Premium | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| Basic SSL DV | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| RapidSSL | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root | |
| RapidSSL Wildcard | SHA-256 Cert + Root |
| SHA-256 Cert + SHA-1 Root |
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