PKI interoperability is an essential component of secure information sharing between DoD and its partners within the federal government and industry. DoD Instruction 8520.02 provides details on the processes to become a DoD approved PKI. DoD Instruction 8520.03 defines sensitivity levels and credential strengths that must be used to authenticate for access to resources at each sensitivity level. These DoD requirements align with larger federal government initiatives around the implementation and use of federated credentials, including M-04-04, HSPD-12, and FIPS-201. The latest PKI Interoperability Diagram that follows illustrates how DoD interacts with approved external PKIs through the Federal Bridge. For an overview of the Federal PKI and Federal Bridge and to learn more about the usage of External PKIs within the DoD, please read our Working with External PKIs slick sheet.
At the bottom of the page, there is a table that lists all DoD approved external PKIs. By selecting each External PKI you can find additional information including certificate trust chains, acceptable certificate assurance levels, and other useful information.