Learn in the textbookPKI and the Core of Public Key Infrastructure
Definition公開鍵基盤 (public key infrastructure) is the Japanese-language name for PKI (Public Key Infrastructure); both refer to the same system.
ExplanationIn the Japanese name, 公開 stands for Public, 鍵 for Key and 基盤 for Infrastructure. Documents often show both forms side by side, as in PKI (公開鍵基盤).