(PowerShell) RSA Encrypt with Modulus and Exponent

Demonstrates how to RSA encrypt with a given modulus and exponent.

Note: This example requires Chilkat v11.0.0 or greater.

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

$success = $false

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

$rsa = New-Object Chilkat.Rsa

# Assuming you already have a base64 modulus and exponent,
# wrap it in XML like this:
$modulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM="
$exponent = "AQAB"

$xml = New-Object Chilkat.Xml
$xml.Tag = "RSAPublicKey"
$xml.NewChild2("Modulus",$modulus)
$xml.NewChild2("Exponent",$exponent)

$pubKey = New-Object Chilkat.PublicKey
$success = $pubKey.LoadFromString($xml)
if ($success -eq $false) {
    $($pubKey.LastErrorText)
    exit
}

$success = $rsa.UsePublicKey($pubKey)
if ($success -eq $false) {
    $($rsa.LastErrorText)
    exit
}

$usePrivateKey = $false
$plainText = "message in a bottle"

$rsa.EncodingMode = "base64"
$encryptedStrBase64 = $rsa.EncryptStringENC($plainText,$usePrivateKey)
$($encryptedStrBase64)