PowerShell

Sign String to create a CAdES-T Signature, using HTTP Proxy to Access Timestamp Server

This example will sign a string to create a CAdEST-T signature. It will use an HTTP proxy to access the timestamp server. PowerShell

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

$success = $false

$crypt = New-Object Chilkat.Crypt2

$cert = New-Object Chilkat.Cert
$cert.SmartCardPin = "123456"
$success = $cert.LoadFromSmartcard("")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

$success = $crypt.SetSigningCert($cert)

# Use SHA-256 rather than the default of SHA-1
$crypt.HashAlgorithm = "sha256"

# Create JSON that tells Chilkat what signing attributes to include:
$attrs = New-Object Chilkat.JsonObject
$attrs.UpdateBool("contentType",$true)
$attrs.UpdateBool("signingTime",$true)
$attrs.UpdateBool("messageDigest",$true)
$attrs.UpdateBool("signingCertificateV2",$true)

# A CAdES-T signature is one that includes a timestampToken created by an online TSA (time stamping authority).
# We must include the TSA's URL, as well as a few options to indicate what is desired.
# Except for the TSA URL, the options shown here are typically what you would need.
$attrs.UpdateBool("timestampToken.enabled",$true)
$attrs.UpdateString("timestampToken.tsaUrl","https://freetsa.org/tsr")
$attrs.UpdateBool("timestampToken.addNonce",$false)
$attrs.UpdateBool("timestampToken.requestTsaCert",$true)
$attrs.UpdateString("timestampToken.hashAlg","sha256")

$crypt.SigningAttributes = $attrs.Emit()

$strToSign = "Hello World!"

$bd = New-Object Chilkat.BinData
$bd.AppendString($strToSign,"utf-8")

# -------------------------------------------------------------------------
# The purpose of this example is to show how an HTTP object with custom
# settings can be used to access the Internet when signing.
# Access to the Internet is needed to communicate with the timestamp server.
$http = New-Object Chilkat.Http
# This can be a domain name, hostname, or IP address.
$http.ProxyDomain = "172.16.16.56"
$http.ProxyPort = 808
$http.ProxyLogin = "myProxyLogin"
$http.ProxyPassword = "myProxyPassword"
$crypt.SetTsaHttpObj($http)
# -------------------------------------------------------------------------

# This creates the CAdES-T signature.  During the signature creation, it
# communicates with the TSA to get a timestampToken.
# The contents of bd are signed and replaced with the CAdES-T signature (which embeds the original content).
$success = $crypt.OpaqueSignBd($bd)
if ($success -ne $true) {
    $($crypt.LastErrorText)
    exit
}

# Get the signature in base64 format:
$($bd.GetEncoded("base64_mime"))

$("Success.")