| Name | Description |
|---|---|
| ApplicationPgpEncrypted | A MIME part with a Content-Type of application/pgp-encrypted. |
| ApplicationPgpSignature | A MIME part with a Content-Type of application/pgp-signature. |
| ApplicationPkcs7Mime | An S/MIME part with a Content-Type of application/pkcs7-mime. |
| ApplicationPkcs7Signature | An S/MIME part with a Content-Type of application/pkcs7-signature. |
| CmsRecipient | An S/MIME recipient. |
| CmsSigner | An S/MIME signer. |
| DefaultSecureMimeContext | A default SecureMimeContext implementation that uses an SQLite database as a certificate and private key store. |
| MultipartEncrypted | A multipart MIME part with a ContentType of multipart/encrypted containing an encrypted MIME part. |
| MultipartSigned | A signed multipart, as used by both S/MIME and PGP/MIME protocols. |
| SecureMailboxAddress | A secure mailbox address which includes a fingerprint for a certificate. |
| TemporarySecureMimeContext | An S/MIME context that does not persist certificates, private keys or CRLs. |
| WindowsSecureMimeContext | An S/MIME cryptography context that uses Windows' System.Security.Cryptography.X509Certificates.X509Store. |
| X509CertificateDatabase | An X.509 certificate database. |
| X509CertificateRecord | An X.509 certificate record. |
| X509CertificateStore | A store for X.509 certificates and keys. |
| X509CrlRecord | An X.509 certificate revocation list (CRL) record. |