摘要：The Secretary of Defense has embraced public key cryptography as a critical component of defensein-depth and contributor to the overall Department of Defense (DoD) information assurance (IA)
strategy for protecting its information and networks. DoD Instruction 8520.2, "Public Key
Infrastructure (PKI) and Public Key Enabling (PKE)" establishes the requirements for PK-enabling all
e-mail, private Web servers and networks.
