(Lianja) POP3 Verify Signed (S/MIME) Email

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

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loMailman = createobject("CkMailMan")

// Set the POP3 server's hostname
loMailman.MailHost = "pop.someMailServer.com"

// Set the POP3 login/password.
loMailman.PopUsername = "myLogin"
loMailman.PopPassword = "myPassword"

loSa = loMailman.GetUidls()
if (loMailman.LastMethodSuccess = .F.) then
    ? loMailman.LastErrorText
    release loMailman
    return
endif

i = 0
do while i < loSa.Count

    lcUidl = loSa.GetString(i)

    loEmail = loMailman.FetchEmail(lcUidl)
    if (loMailman.LastMethodSuccess = .F.) then
        ? loMailman.LastErrorText
        release loSa
        release loMailman
        return
    endif

    ? loEmail.From
    ? loEmail.Subject

    // 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 (loEmail.ReceivedSigned = .T.) then

        ? "This email was signed."

        // Check to see if the signatures were verified.
        if (loEmail.SignaturesValid = .T.) then
            ? "Digital signature(s) verified."
            ? "Signer: " + loEmail.SignedBy

            // The certificate used for signing may be obtained
            // by calling email.GetSignedByCert.

            loCert = loEmail.GetSignedByCert()
            if (loEmail.LastMethodSuccess = .F.) then
                ? "Failed to get signing certificate object."
            else
                ? "Signing cert: " + loCert.SubjectCN
                release loCert
            endif

        else
            ? "Digital signature verification failed."
        endif

    endif

    release loEmail
    i = i + 1
enddo

release loSa

loMailman.Pop3EndSession()


release loMailman