Add a Detached Signature (Separate Key, Header Control)

See more MIME Examples

Demonstrates the Chilkat Mime.AddDetachedSignaturePk2 method, which creates a detached signature with a separately supplied certificate and private key, and a third argument controlling transfer of the existing message header fields to the new outer entity.

Note: 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.

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$mime = New-Object Chilkat.Mime
$success = $mime.SetBodyFromPlainText("This message will be signed.")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

#  Load the certificate and its private key separately.
$cert = New-Object Chilkat.Cert
$success = $cert.LoadFromFile("qa_data/signer.cer")
if ($success -eq $false) {
    $($cert.LastErrorText)
    exit
}

$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadPemFile("qa_data/signer_privkey.pem")
if ($success -eq $false) {
    $($privKey.LastErrorText)
    exit
}

#  Create a detached signature with separately supplied cert and private key, where the 3rd
#  argument controls whether the existing message header fields are transferred to the new outer
#  multipart/signed entity.
$transferHeaderFields = $true
$success = $mime.AddDetachedSignaturePk2($cert,$privKey,$transferHeaderFields)
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$success = $mime.SaveMime("qa_output/signed.eml")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$("Detached signature added (headers transferred).")