@type t() :: %SBoM.CycloneDX.V16.CryptoProperties.CertificateProperties{
  __unknown_fields__: [Protobuf.unknown_field()],
  certificateExtension: String.t() | nil,
  certificateFormat: String.t() | nil,
  issuerName: String.t() | nil,
  notValidAfter: Google.Protobuf.Timestamp.t() | nil,
  notValidBefore: Google.Protobuf.Timestamp.t() | nil,
  signatureAlgorithmRef: String.t() | nil,
  subjectName: String.t() | nil,
  subjectPublicKeyRef: String.t() | nil
}