PKI: Secure Digital Communication & Authentication 🔐

Public Key Infrastructure (PKI) is a comprehensive system that enables secure digital communication and authentication over untrusted networks like the internet. It uses cryptographic key pairs—public and private keys—to encrypt and decrypt data, ensuring confidentiality and integrity.

At the heart of PKI are digital certificates, which are electronic credentials issued by trusted entities called Certificate Authorities (CAs). These certificates verify the identity of individuals, organizations, or devices and bind them to their public keys.

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