public enum SMimeACertificateUsagePublic Enumeration SMimeACertificateUsagepublic enum class SMimeACertificateUsagetype SMimeACertificateUsage| PkixTA | 0 | CA constraint Defined in RFC 6698. |
| PkixEE | 1 | Service certificate constraint Defined in RFC 6698. |
| DaneTA | 2 | Trust anchor assertion Defined in RFC 6698. |
| DaneEE | 3 | Domain-issued certificate Defined in RFC 6698. |
| PrivCert | 255 | Reserved for Private Use Defined in RFC 6698. |