(PowerShell) Sign XML to Create P7S

Demonstrates how to sign XML to create a P7S.

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.

$crypt = New-Object Chilkat.Crypt2

$cert = New-Object Chilkat.Cert
$success = $cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

# Tell the crypt component to use this cert.
$success = $crypt.SetSigningCert($cert)
if ($success -ne $true) {
    $($crypt.LastErrorText)
    exit
}

# The CadesEnabled property applies to all methods that create PKCS7 signatures. 
# To create a CAdES-BES signature, set this property equal to true. 
$crypt.CadesEnabled = $true

$crypt.HashAlgorithm = "sha256"

# We can sign any type of file, creating a .p7s as output.
# The .p7s contains the signature and also embeds the data of the file that is signed.
$inFile = "qa_data/xml/sample1.xml"
$p7sFile = "qa_output/sample1.xml.p7s"

# Create the CAdES-BES attached signature, which contains the original data.
# Note: Chilkat's function naming is not accurate.  CreateP7M creates a PKCS7 signature where the signed file
# is contained within the signature.  CreateP7S creates a detached PKCS7 signature where the signed file
# is NOT contained within the signature.  We want the data to be contained in the signature, therefore
# we call CreateP7M even though we are naming our output file .p7s.
$success = $crypt.CreateP7M($inFile,$p7sFile)
if ($success -eq $false) {
    $($crypt.LastErrorText)
    exit
}

# Verify the .p7s file and extract the original file from the .p7s. 
$extractedToFilePath = "qa_output/sample1.xml"
$success = $crypt.VerifyP7M($p7sFile,$extractedToFilePath)
if ($success -eq $false) {
    $($crypt.LastErrorText)
    exit
}

$("Success!")