Internet Governance Glossary
2
2.42 public-key infrastructure / PKI
System supporting the implementation of asymmetric (public key) encryption, including, inter alia, management and distribution of encryption keys and digital certificates.
Note:
PKI is a maximalist approach specifying a framework and procedures for eSignatures, including cryptography and the use of public key identifiers. This approach usually specifies the establishment of dedicated digital certificate authorities, which can certify future users of eSignatures.