enum System.Security.Cryptography.X509Certificates.X509ChainStatusFlags flags:

   def enum
      NoError = 0
      NotTimeValid = 1
      NotTimeNested = 2
      Revoked = 4
      NotSignatureValid = 8
      NotValidForUsage = 16
      UntrustedRoot = 32
      RevocationStatusUnknown = 64
      Cyclic = 128
      InvalidExtension = 256
      InvalidPolicyConstraints = 512
      InvalidBasicConstraints = 1024
      InvalidNameConstraints = 2048
      HasNotSupportedNameConstraint = 4096
      HasNotDefinedNameConstraint = 8192
      HasNotPermittedNameConstraint = 16384
      HasExcludedNameConstraint = 32768
      PartialChain = 65536
      CtlNotTimeValid = 131072
      CtlNotSignatureValid = 262144
      CtlNotValidForUsage = 524288
      HasWeakSignature = 1048576
      OfflineRevocation = 16777216
      NoIssuanceChainPolicy = 33554432
      ExplicitDistrust = 67108864
      HasNotSupportedCriticalExtension = 134217728.

end enum.
