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Explain the concept of PKI, Public Key Infrastructure. Public Key Infrastructure: A set of hardware, software, people, policies and procedures comprises the Public Key Infrastructure (PKI) and digital certificates are revoked. The arrangement of public key binding with respective of identification of users by means of a Certificate Authority , is done in PKI. Every certificate authority should have a unique user identity. The registration and issuance process that is depending on the level of assurance is involved in binding, which may be carried out be software at a CA. The binding assurance portrayed by PKI is known as Registration Authority. The public key certificates issued by the CA are comprised unforgettable user identity, public key and their binding, validity conditions and other attributes.
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