(PowerShell) RSA Encrypt with Modulus and Exponent

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

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.

$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)

# Encrypt with the public key.
$publicKey = $xml.GetXml()
$success = $rsa.ImportPublicKey($publicKey)

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

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