Public Key Infrastructure (PKI)

Public Key Infrastructure (PKI) is a framework that enables secure communication over the internet. It uses a pair of cryptographic keys: a public key, which anyone can see, and a private key, kept secret by the owner. PKI helps verify identities and encrypts data, ensuring that only the intended recipient can read it. Digital certificates, issued by trusted authorities, link these keys to individuals or organizations, confirming their legitimacy. This system underpins many online activities, such as secure email, online banking, and e-commerce, playing a critical role in maintaining privacy and trust in digital interactions.