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Understanding PKI (Public Key Infrastructure) for Information Security

“PKI is a system composed of digital certificates, digital signatures, processes, procedures, and other services necessary to ensure confidentiality, integrity, authentication, non-repudiation and access control.” (Lawrence C. Miller & Peter H. Gregory)

Example of Caesar cipher. Source:
Sample of PKI. Source:
Sample of digital certificate. Source:
Sample of digital signature. Source:
Outlook email digital signature setup sample. Source:



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