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Classic ASP Examples

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(Classic ASP) IMAP Download and Verify Signed MIME

Downloads the unmodified MIME of a digitally signed email, saves the .p7s signature (and other MIME parts), then loads the email into a Chilkat email object (which unwraps the S/MIME and verifies the signature) and then saves attachments (if the MIME parts were not already saved).

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set imap = Server.CreateObject("Chilkat_9_5_0.Imap")

' Connect to an IMAP server.
' Use TLS
imap.Ssl = 1
imap.Port = 993
success = imap.Connect("imap.someMailServer.com")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

success = imap.Login("myLogin","myPassword")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Download the 1st email (as MIME) in the Inbox by sequence number.
set sbMime = Server.CreateObject("Chilkat_9_5_0.StringBuilder")
success = imap.FetchSingleAsMimeSb(1,0,sbMime)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Load it into a MIME object and check to see if it is signed
set mime = Server.CreateObject("Chilkat_9_5_0.Mime")
success = mime.LoadMimeSb(sbMime)
alreadySavedParts = 0
If (mime.ContainsSignedParts() = 1) Then

    ' This will save the .p7s and other parts...
    ' sa is a Chilkat_9_5_0.StringArray
    Set sa = mime.ExtractPartsToFiles("qa_output")
    If (mime.LastMethodSuccess = 1) Then
        numFiles = sa.Count
        i = 0
        Do While i < numFiles
            Response.Write "<pre>" & Server.HTMLEncode( "Created: " & sa.GetString(i)) & "</pre>"
            i = i + 1
        Loop

        alreadySavedParts = 1
    End If

End If

' Load the MIME into an Email object.  This unwraps the security layers and verifies signatures.
set email = Server.CreateObject("Chilkat_9_5_0.Email")
success = email.SetFromMimeSb(sbMime)

If (email.ReceivedSigned = 1) Then

    Response.Write "<pre>" & Server.HTMLEncode( "This email was signed.") & "</pre>"

    ' Check to see if the signatures were verified.
    If (email.SignaturesValid = 1) Then
        Response.Write "<pre>" & Server.HTMLEncode( "Digital signature(s) verified.") & "</pre>"

        Response.Write "<pre>" & Server.HTMLEncode( "Signer: " & email.SignedBy) & "</pre>"

        ' The certificate used for signing may be obtained
        ' by calling email.GetSignedByCert.
        ' cert is a Chilkat_9_5_0.Cert
        Set cert = email.GetSignedByCert()
        If (email.LastMethodSuccess <> 1) Then
            Response.Write "<pre>" & Server.HTMLEncode( "Failed to get signing certificate object.") & "</pre>"
        Else
            Response.Write "<pre>" & Server.HTMLEncode( "Signing cert: " & cert.SubjectCN) & "</pre>"

        End If

    End If

Else
    Response.Write "<pre>" & Server.HTMLEncode( "Digital signature verification failed.") & "</pre>"
End If

If (alreadySavedParts <> 1) Then
    success = email.SaveAllAttachments("qa_output")
End If


%>
</body>
</html>

 

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