(AutoIt) RSA SHA256 Signature using Private Key from Java Keystore

Signs plaintext using RSA SHA256 using a key from a Java keystore.

Duplicatest this code:

KeyStore keystore; // key repository for keys containing signature certificate
String alias; // alias for the certificate in the key repository
String password; // password for the certificate's private key
String plaintext; // text being signed


Signature signature = Signature.getInstance("SHA256withRSA");
signature.initSign((PrivateKey) keystore.getKey(alias, password.toCharArray()));
signature.update(plaintext.getBytes("UTF-8"));
byte[] rsa_text= signature.sign();

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

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

$oJks = ObjCreate("Chilkat_9_5_0.JavaKeyStore")

Local $sJksPassword = "secret"

; Load the Java keystore from a file.  The JKS file password is used
; to verify the keyed digest that is found at the very end of the keystore.
; It verifies that the keystore has not been modified.
Local $bSuccess = $oJks.LoadFile($sJksPassword,"qa_data/jks/sample_secret.jks")
If ($bSuccess <> True) Then
    ConsoleWrite($oJks.LastErrorText & @CRLF)
    Exit
EndIf

; Get the private key from the JKS.
; The private key password may be different than the file password.
Local $sPrivKeyPassword = "secret"
Local $bCaseSensitive = False
Local $oPrivKey = $oJks.FindPrivateKey($sPrivKeyPassword,"some.alias",$bCaseSensitive)
If ($oJks.LastMethodSuccess <> True) Then
    ConsoleWrite($oJks.LastErrorText & @CRLF)
    Exit
EndIf

; Establish the RSA object and tell it to use the private key..
$oRsa = ObjCreate("Chilkat_9_5_0.Rsa")

$bSuccess = $oRsa.ImportPrivateKeyObj($oPrivKey)

If ($bSuccess <> True) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

; Indicate we'll be signing the utf-8 byte representation of the string..
$oRsa.Charset = "utf-8"

; Sign some plaintext using RSA-SHA256
Local $oBinarySignature
Local $sPlaintext = "this is the text to be signed"
$oBinarySignature = $oRsa.SignString($sPlaintext,"SHA256")
If ($oRsa.LastMethodSuccess <> True) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

; Alternatively, if the signature is desired in some encoded string form,
; such as base64, base64-url, hex, etc.
$oRsa.EncodingMode = "base64-url"
Local $signatureStr = $oRsa.SignStringENC($sPlaintext,"SHA256")
ConsoleWrite("base64-url RSA signature: " & $signatureStr & @CRLF)