Use an XmlCertVault for S/MIME Operations

See more MIME Examples

Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.

UseCertVault sets an XmlCertVault as the single active source of certificates and private keys for S/MIME encryption, decryption, signing, and verification.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Dim success As Boolean = False

Dim mime As New Chilkat.Mime
success = mime.LoadMimeFile("qa_data/encrypted.eml")
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If


'  Use an XmlCertVault as the source of certificates and private keys for S/MIME operations.  The
'  only argument is the vault.  Only one vault is active at a time.
Dim vault As New Chilkat.XmlCertVault
Dim pfxPassword As String = "myPfxPassword"
success = vault.AddPfxFile("qa_data/recipient.pfx",pfxPassword)
If (success = False) Then
    Debug.WriteLine(vault.LastErrorText)
    Exit Sub
End If


success = mime.UseCertVault(vault)
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If


'  Decryption (and signing/verification) now draws credentials from the vault.
success = mime.Decrypt()
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("Decrypted using the certificate vault.")