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In this course, we will explore the fundamentals of Public Key Infrastructure (PKI) and its role in securing digital applications, transactions, identities, and supply chains. By the end of this course, you will have a comprehensive understanding of how PKI works, its components, and its applications. Public Key Infrastructure (PKI) is a system that uses digital certificates to authenticate users, devices, and services.
PKI uses asymmetric encryption to create a secure connection for data encryption and signing. How PKI worksAn organization requests a digital certificate from a Certificate Authority (CA). The Registration Authority (RA) verifies the identity of the organization or user.
The CA issues the digital certificate, which is signed with the CA's private key. The CA publishes the public key, which can be used to encrypt or verify a digital signature. The public key is used to encrypt data, which is then decrypted with the private key.
Components of PKICertificate Authority (CA)A trusted third-party that issues, stores, and signs digital certificates. CAs also maintain a Certificate Revocation List (CRL). Registration Authority (RA)Verifies the identity of the user or device requesting a digital certificate.
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