What is the difference between Public Key Cryptography and PKI?

Public Key Cryptography refers to cryptographic methods that use public and private keys. A PKI adds a trust infrastructure consisting of certification authorities, certificates, policies, and processes. This allows public keys to be reliably associated with identities and securely managed even in large IT environments.

How does Public Key Cryptography work?

Public Key Cryptography uses a mathematically related key pair: a public key and a private key. The private key remains secret, while the public key can be distributed. Depending on the cryptographic method, the key pair can be used, for example, to encrypt data or to create and verify digital signatures. The private key is […]

Why is a PKI needed?

A PKI is needed to reliably associate public keys with specific identities and to provide trusted proof of that association. This makes it possible to securely authenticate people, devices, servers, and applications and to protect digital communications.

What does PKI stand for?

PKI stands for “Public Key Infrastructure.” It refers to an infrastructure consisting of technical components, processes, and policies used to issue, manage, validate, and, when necessary, revoke cryptographic keys and digital certificates.

What is a PKI (Public Key Infrastructure)?

A PKI (Public Key Infrastructure) is a trust infrastructure for secure digital communication. It makes it possible to reliably verify the digital identities of people, devices, servers, or applications using certificates and to manage cryptographic keys in a controlled manner. A PKI therefore provides a trusted foundation for authentication, encryption, and digital signatures.