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TElPrivateKeyUsagePeriodExtension is a descendant of TElCustomExtension class.
Description
The following paragraph is taken from RFC 2459 (Housley, et. al.), part 4.2.1.4:
«This profile recommends against the use of this extension. CAs
conforming to this profile MUST NOT generate certificates with
critical private key usage period extensions.
The private key usage period extension allows the certificate issuer
to specify a different validity period for the private key than the
certificate. This extension is intended for use with digital
signature keys. This extension consists of two optional components,
notBefore and notAfter. The private key associated with the
certificate should not be used to sign objects before or after the
times specified by the two components, respectively. CAs conforming
to this profile MUST NOT generate certificates with private key usage
period extensions unless at least one of the two components is
present.
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Inherited from TElCustomExtension .NET: