Oracle Fusion Middleware Reference for Oracle Directory Server Enterprise Edition

Certificate Chains

CA hierarchies are reflected in certificate chains. A certificate chain is a series of certificates issued by successive CAs. Figure 5–4 shows a certificate chain leading from a certificate that identifies some entity through two subordinate CA certificates to the CA certificate for the root CA (based on the CA hierarchy shown in the following figure).

Figure 5–4 Certificate Chain

Figure shows a certificate chain.

A certificate chain traces a path of certificates from a branch in the hierarchy to the root of the hierarchy. In a certificate chain, the following occur:

In Figure 5–4, the public key in the certificate for the USA CA can be used to verify the USA CA’s digital signature on the certificate for the Engineering CA.