A framework that enables secure communication through the use of cryptographic key pairs and digital certificates.
Description
Public Key Infrastructure (PKI) is a foundational technology in the field of cybersecurity that supports the secure exchange of information over networks. It utilizes a combination of hardware, software, policies, and standards to manage digital certificates and public-key encryption. PKI allows users to create, manage, distribute, and revoke digital certificates, which serve as electronic credentials that authenticate the identity of individuals, devices, or organizations. By employing asymmetric encryption, where a public key encrypts data and a private key decrypts it, PKI ensures that sensitive information remains confidential during transmission. This infrastructure is critical for various applications such as secure email, secure web browsing (HTTPS), and digital signatures, which confirm the authenticity and integrity of documents. Major companies like Microsoft and Google rely on PKI for securing user communications and transactions, demonstrating its importance in maintaining trust in digital environments.
Examples
- SSL/TLS certificates used by websites to establish secure connections and protect user data.
- Digital signatures employed in software distribution to verify the authenticity of applications.
Additional Information
- PKI supports compliance with regulatory standards such as GDPR and HIPAA by ensuring data protection.
- It plays a key role in Internet of Things (IoT) security by authenticating devices and securing communications between them.