(PowerShell) RSA Sign utf-8 Byte Representation of String

Demontstrates how to sign the utf-8 byte representation of a string.

Chilkat .NET Downloads Chilkat .NET Assemblies

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

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

# Load an RSA private key for signing.
$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd")
if ($success -ne $true) {
    $($privKey.LastErrorText)
    exit
}

$rsa = New-Object Chilkat.Rsa
$rsa.ImportPrivateKeyObj($privKey)

$originalData = "This is the string to be hashed an RSA signed."

# Indicate that we want the utf-8 byte representation of the string to be signed
$rsa.Charset = "utf-8"

# We want the RSA signature in base64 format
$rsa.EncodingMode = "base64"

$sigBase64 = $rsa.SignStringENC($originalData,"sha256")
$($sigBase64)