Extended Validation Certificate 扩展验证证书
(重定向自EV SSL)
An Extended Validation Certificate (EV) is a public key certificate requiring verification of the requesting entity's identity by a certificate authority (CA).
EV certificates are mainly presented by web servers to web browsers for use with SSL/TLS connections. The certificates contain a subject with X.509 OIDs for jurisdictionOfIncorporationCountryName, businessCategory, and serialNumber, with the serialNumber pointing to the ID at the relevant Secretary of State (US) or national government business registrar (outside US), as well as a CA-specific policy identifier so that EV-aware software, such as a web browser, can recognize them.