(Visual Basic 6.0) PKCS7 Decrypt MIME

Loads a PKCS7 encrypted MIME file and decrypts. The cert and private key used for decryption is loaded from a PFX file.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim mime As New ChilkatMime

' Load the MIME
Dim success As Long
success = mime.LoadMimeFile("encryptedMime.txt")
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

' The AddPfxSourceFile and/or AddPfxSourceData
' methods may be called one or more times (one per PFX)
' to add sources from which the MIME component will
' search for certificates and private keys when decrypting.
Dim pfxPassword As String
pfxPassword = "myPassword"
success = mime.AddPfxSourceFile("myCertAndPrivateKey.pfx",pfxPassword)
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

' Decrypt...
success = mime.Decrypt()
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

' Display the decrypted MIME:
Debug.Print mime.GetMime()