(AutoIt) IMAP Download and Verify Signed (S/MIME) Email

Demonstrates how to download and verify digitally signed S/MIME email.

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.

$oImap = ObjCreate("Chilkat.Imap")

; Connect to an IMAP server.
; Use TLS
$oImap.Ssl = True
$oImap.Port = 993
Local $bSuccess = $oImap.Connect("imap.someMailServer.com")
If ($bSuccess <> True) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oImap.Login("myLogin","myPassword")
If ($bSuccess <> True) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

; Select an IMAP mailbox
$bSuccess = $oImap.SelectMailbox("Inbox")
If ($bSuccess <> True) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

; We can choose to fetch UIDs or sequence numbers.
Local $bFetchUids = True

; Get the message IDs of all the emails in the mailbox
Local $oMessageSet = $oImap.Search("ALL",$bFetchUids)
If ($oImap.LastMethodSuccess <> True) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

; Scan for emails with attachments, and save the attachments
; to a sub-directory.
Local $i = 0
While $i < $oMessageSet.Count

Local $sUid = $oMessageSet.GetId($i)
    ConsoleWrite("uid: " & $sUid & @CRLF)

Local $oEmail = $oImap.FetchSingle($sUid,True)

    ; The security layers of signed and/or encrypted emails
    ; are automatically "unwrapped" when loaded into
    ; a Chilkat email object.
    ; An application only needs to check to see if an email
    ; was received signed or encrypted, and then examine
    ; the success/failure.  For example:
    If ($oEmail.ReceivedSigned = True) Then

        ConsoleWrite("This email was signed." & @CRLF)

        ; Check to see if the signatures were verified.
        If ($oEmail.SignaturesValid = True) Then
            ConsoleWrite("Digital signature(s) verified." & @CRLF)

            ConsoleWrite("Signer: " & $oEmail.SignedBy & @CRLF)

            ; The certificate used for signing may be obtained
            ; by calling email.GetSignedByCert.
Local $oCert = $oEmail.GetSignedByCert()
            If ($oEmail.LastMethodSuccess <> True) Then
                ConsoleWrite("Failed to get signing certificate object." & @CRLF)
            Else
                ConsoleWrite("Signing cert: " & $oCert.SubjectCN & @CRLF)

            EndIf

        Else
            ConsoleWrite("Digital signature verification failed." & @CRLF)
        EndIf

    EndIf

    $i = $i + 1
Wend

; Disconnect from the IMAP server.
$bSuccess = $oImap.Disconnect()