August 2019
Intermediate to advanced
786 pages
20h 22m
English
The single-tier model is also called the one-tier model, and it is the simplest deployment model for a PKI. This is not recommended for use in any production network, as it's a single point of failure for the entire PKI:

In this model, a single CA will act as root CA and issuing CA. As I explained before, the root CA is the most trusted CA in the PKI hierarchy. A compromised root CA will compromise the entire PKI. In this model, it's a single server, so any breach of the server will easily compromise the entire PKI, as it doesn't need to spread through different hierarchical levels. This model is easy to implement and ...
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