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1-2-3 PKI (Public Key Infrastructure)

PKI (Public Key Infrastructure) is a security platform using public key cryptography, certification bodies, and digital signatures. It is used in EC (Electronic Commerce) and in the SSL (Secure Sockets Layer) security protocol. Another authentication infrastructure is GPKI (Government PKI), which uses PKI for performing applications and notifications to administrative bodies. Since mutual authentication between government agencies’

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certification authorities and private certification authorities is required in GPKI, a BCA (Bridge Certification Authority) must mediate between such certification authorities.