The Essentials and Beyond
In this chapter, you learned about certificates and the components of a Public Key Infrastructure (PKI). Certificates are used for a wide variety of purposes including authentication, encryption, digital signatures, and code signing. Public keys are included within certificates, and the public and private key pairs are used for asymmetric encryption. For example, HTTPS sessions start with asymmetric encryption to privately share a secret key and then use the secret key for symmetric encryption of the session. Before a certificate is used, several validation checks may be completed to ensure that the certificate isn’t expired, revoked, or being misused. If these checks fail, the user may see an error. You can view the ...
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