PowerShell Requires Chilkat v11.0.0+
PowerShell
Sign MIME using RSASSA-PSS with SHA256
See more MIME Examples
Demonstrates how to sign an MIME using the RSASSA-PSS signing algorithm with the SHA256 hash algorithm.Chilkat PowerShell Downloads
Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"
$success = $false
# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
$mime = New-Object Chilkat.Mime
# Create a MIME message to sign.
$mime.NewMultipartMixed()
$mime.AddHeaderField("someHeader1","Some value 1")
$mime.AddHeaderField("someHeader2","Some value 2")
$part0 = New-Object Chilkat.Mime
$part0.AddHeaderField("hdrA","Some value A")
$part0.AddHeaderField("hdrB","Some value B")
$part0.ContentType = "text/plain"
$part0.SetBody("This is the plain-text body.")
$part1 = New-Object Chilkat.Mime
$part1.AddHeaderField("hdrX","Some value X")
$part1.AddHeaderField("hdrY","Some value Y")
$part1.ContentType = "text/xml"
$part1.SetBody("<a>This is the XML body</a>")
$mime.AppendPart($part0)
$mime.AppendPart($part1)
# The MIME to be signed:
$sbUnsignedMime = New-Object Chilkat.StringBuilder
$mime.GetMimeSb($sbUnsignedMime)
$($sbUnsignedMime.GetAsString())
# Content-Type: multipart/mixed; boundary="------------080303020600020604010008"
# someHeader1: Some value 1
# someHeader2: Some value 2
#
# --------------080303020600020604010008
# hdrA: Some value A
# hdrB: Some value B
# Content-Type: text/plain
#
# This is the plain-text body.
# --------------080303020600020604010008
# hdrX: Some value X
# hdrY: Some value Y
# Content-Type: text/xml
#
# <a>This is the XML body</a>
# --------------080303020600020604010008--
#
# Get a digital certificate with private key from a .pfx
# (Chilkat has many different ways to provide a cert + private key for siging.
# Using a PFX is just one possible option.)
$pfx = New-Object Chilkat.Pfx
$success = $pfx.LoadPfxFile("qa_data/rsassa-pss/privatekey.pfx","PFX_PASSWORD")
if ($success -eq $false) {
$($pfx.LastErrorText)
exit
}
# Get the certificate to be used for signing.
# (The typical case for a PFX is that it contains a cert with an associated private key,
# as well as other certificates in the chain of authentication. The cert with the private
# key should be in the first position at index 0.)
$cert = New-Object Chilkat.Cert
$success = $pfx.CertAt(0,$cert)
if ($success -eq $false) {
$($pfx.LastErrorText)
exit
}
# Indicate that RSASSA-PSS with SHA256 should be used.
$mime.SigningAlg = "pss"
$mime.SigningHashAlg = "sha256"
# Add a detached signature.
$success = $mime.AddDetachedSignature($cert)
if ($success -ne $true) {
$($mime.LastErrorText)
exit
}
# Show the clear-signed MIME. (see the sample output below)
$("-------------------------------------------------------------")
$("Clear-signed MIME using detached signature:")
$("-------------------------------------------------------------")
$($mime.GetMime())
# Restore the original unsigned MIME, and this time create an opaque signature.
$mime.LoadMime($sbUnsignedMime.GetAsString())
# Sign using an opaque signature
$success = $mime.ConvertToSigned($cert)
if ($success -ne $true) {
$($mime.LastErrorText)
exit
}
# Show the opaque-signed MIME. (see the sample output below)
$("-------------------------------------------------------------")
$("Opaque-signed MIME :")
$("-------------------------------------------------------------")
$($mime.GetMime())
$("Success.")
# -----------------------------------------------
# This is sample output for the clear-signed MIME:
# -----------------------------------------------
#
# Content-Type: multipart/signed; boundary="----=_NextPart_672_c95a_97b64c9a.90b5204d";
# protocol="application/x-pkcs7-signature";
# micalg=sha256
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d
# Content-Type: multipart/mixed; boundary="------------030207090102000301050504"
# someHeader1: Some value 1
# someHeader2: Some value 2
#
# --------------030207090102000301050504
# hdrA: Some value A
# hdrB: Some value B
# Content-Type: text/plain
#
# This is the plain-text body.
# --------------030207090102000301050504
# hdrX: Some value X
# hdrY: Some value Y
# Content-Type: text/xml
#
# <a>This is the XML body</a>
# --------------030207090102000301050504--
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d
# Content-Transfer-Encoding: base64
# Content-Type: application/x-pkcs7-signature; name="smime.p7s"
# Content-Disposition: attachment; filename="smime.p7s"
#
# MIIG5wYJKoZIhvcNAQcCoIIG2DCCBtQCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg
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# neC8qw==
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d--
#
# -----------------------------------------------
# This is sample output for the opaque-signed MIME:
# -----------------------------------------------
# Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="signed-data"
# someHeader1: Some value 1
# someHeader2: Some value 2
# Content-Disposition: attachment; filename="smime.p7m"
# Content-Transfer-Encoding: base64
#
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