CybersecurityPKI
Public Key Infrastructure
The framework of keys, certificates, and authorities that enables trusted encryption, authentication, and digital signatures.
Public key infrastructure binds public keys to identities through digital certificates issued by trusted certificate authorities, enabling parties to encrypt data, verify identities, and validate digital signatures.
In space systems, PKI can secure command authentication, software-update signing, and ground-segment communications, providing assurance that commands and updates originate from authorised sources. It is a core enabler of command-link security.