(AutoIt) Generate an RSA Key and Get as Base64 DER

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

$oRsa = ObjCreate("Chilkat.Rsa")

; Generate a 2048-bit key.  Chilkat RSA supports
Local $bSuccess = $oRsa.GenerateKey(2048)
If ($bSuccess <> True) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

; Get the public part of the key.
Local $oPubKey = $oRsa.ExportPublicKeyObj()

; There are two possible formats for representing the RSA public key 
; in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
; We can get either by setting bChoosePkcs1 to True or False.
Local $bChoosePkcs1 = True
Local $sPubKeyBase64Der = $oPubKey.GetEncoded($bChoosePkcs1,"base64")
ConsoleWrite("Public Key Base64 DER:" & @CRLF)
ConsoleWrite($sPubKeyBase64Der & @CRLF)

; Now get the private key as Base64 DER:
; Get the private part of the key.
; (Note: A public key is actually just a subset of the private key.  
;  If you have the private key, you also have the public key.
;  Thus Chilkat provides a method to get the public key from the private key.)
Local $oPrivKey = $oRsa.ExportPrivateKeyObj()

; Again, we can get PKCS1 or PKCS8, but with different methods:
Local $sPrivKeyPkcs1 = $oPrivKey.GetPkcs1ENC("base64")
ConsoleWrite("Private Key PKCS1 Base64 DER:" & @CRLF)
ConsoleWrite($sPrivKeyPkcs1 & @CRLF)

Local $sPrivKeyPkcs8 = $oPrivKey.GetPkcs8ENC("base64")
ConsoleWrite("Private Key PKCS8 Base64 DER:" & @CRLF)
ConsoleWrite($sPrivKeyPkcs8 & @CRLF)