x509

Public Key Infrastructure (PKI) definitions and terminologies. PKI: Public Key Infrastructure PKI stands for Public Key Infrastructure, and it is a system that enables secure communication over the internet by using public key cryptography. PKI is a collection of policies, procedures, hardware, software, and people that work together to create, manage, distribute, and revoke digital certificates and public-private key pairs. In PKI, each entity has a public-private key pair, and the public key is published in a digital certificate, which is signed by a trusted third-party known as a Certificate Authority (CA).

This tool provides online X.509 certificate decoding for free. Privacy first: The certificate decoding process occurs locally in your browser, with no data sent to any external server. You can examine an X.509 certificate in PEM format using your browser without any need for external servers, similar to using openssl, but with greater privacy as there is no communication with a server. Input X.509 certificate (in PEM format) The certificate data will remain within your browser and will be decoded through JavaScript executed on the client-side, ensuring its privacy.