(PowerShell) AddDetachedSignaturePk

Demonstrates how to add a detached signature using a certifcate and it's corresponding private key. The easiest way of doing it is when both the certificate and private key are contained together within a PFX (.pfx or .p12) file. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$mime = New-Object Chilkat.Mime

# Load the certificate from a .cer file.
$cert = New-Object Chilkat.Cert
$success = $cert.LoadFromFile("aaworkarea/myCert.cer")
if ($success -eq $false) {
    $($cert.LastErrorText)
    exit
}

# Load the private key from an encrypted PEM file.
# (A private key can be loaded from other file formats also..)
$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadEncryptedPemFile("aaworkarea/myPrivateKey.pem","myPassword")
if ($success -eq $false) {
    $($privKey.LastErrorText)
    exit
}

$success = $mime.SetBodyFromPlainText("This is the plain-text MIME body.")

# Sign the MIME (adds a PKCS7 detached signature)
$success = $mime.AddDetachedSignaturePk($cert,$privKey)
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

# Save the S/MIME to a file.
$success = $mime.SaveMime("aaworkarea/signedMime.txt")
if ($success -eq $false) {
    $($mime.LastErrorText)
    exit
}

$("success!")