AutoIt

RSA Encrypt and OpenSSL Decrypt

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Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt. AutoIt

Local $bSuccess = False

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

$oRsa = ObjCreate("Chilkat.Rsa")

$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oRsa.GenKey(2048,$oPrivKey)
$bSuccess = $oPrivKey.SavePkcs8PemFile("qa_output/privKey.pem")

$oPubKey = ObjCreate("Chilkat.PublicKey")
$oPrivKey.ToPublicKey($oPubKey)

$oRsa.EncodingMode = "base64"
Local $sPlainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
Local $bUsePrivateKey = False
$oRsa.UsePublicKey($oPubKey)
Local $sEncryptedStr = $oRsa.EncryptStringENC($sPlainText,$bUsePrivateKey)

$oBd = ObjCreate("Chilkat.BinData")
$oBd.AppendEncoded($sEncryptedStr,"base64")
$bSuccess = $oBd.WriteFile("qa_output/enc.dat")

; The OpenSSL command to decrypt is:
; openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

ConsoleWrite("OK" & @CRLF)