Add a PFX File as a Decryption Source

See more MIME Examples

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

AddPfxSourceFile registers a PFX/P12 file as a source of certificates and private keys used by subsequent decryption operations.

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


'  Add a PFX/P12 file as a source of certificates and private keys for later decryption.  The 1st
'  argument is the PFX path and the 2nd is its password (from a secure source).  Call once per
'  source file.
Dim pfxPassword As String = "myPfxPassword"
success = mime.AddPfxSourceFile("qa_data/recipient.pfx",pfxPassword)
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If


'  Decrypt using the keys from the added PFX source(s).
success = mime.Decrypt()
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("Decrypted.")