kSecTrustRevocationValidUntilDate
A key whose value indicates the earliest date at which revocation information becomes stale.
Declaration
let kSecTrustRevocationValidUntilDate: CFStringDiscussion
This key is only present if the kSecTrustRevocationChecked key has a value of kCFBooleanTrue. The value is a CFDate representing the earliest date at which the revocation information for one of the certificates in this chain might change.