<PackageReference Include="BouncyCastle.Cryptography" Version="2.8.0-beta.349" />

Org.BouncyCastle.Pkix.PkixCertPathValidatorReason

The reason a PkixCertPathValidatorException was thrown, as reported by its Reason property.
namespace Org.BouncyCastle.Pkix { public enum PkixCertPathValidatorReason { Unspecified, Expired, NotYetValid, Revoked, UndeterminedRevocationStatus, InvalidSignature, AlgorithmConstrained, NameChaining, InvalidKeyUsage, InvalidPolicy, NoTrustAnchor, UnrecognizedCriticalExtension, NotCACertificate, PathTooLong, InvalidName, LimitExceeded } }