<PackageReference Include="BouncyCastle.Cryptography" Version="2.6.2" />

AttCertValidityPeriod

public static AttCertValidityPeriod GetInstance(object obj)

public static AttCertValidityPeriod GetInstance(Asn1TaggedObject obj, bool explicitly)

public static AttCertValidityPeriod GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit)