AutoIt Requires Chilkat v11.0.0+

RSA Encrypt with SHA-256 hash function and SHA-256 mask function

See more RSA Examples

How can this Javascript be duplicated using Chilkat?

function a(e, t) {
                var r = s.pki.publicKeyFromPem(e)
                  , n = r.encrypt(t, "RSA-OAEP", {
                    md: s.md.sha256.create(),
                    mgf1: {
                        md: s.md.sha1.create()
                    }
                });
                return s.util.encode64(n)
            }

Note: The OAEP padding uses random bytes in the padding, and therefore each time encryption happens, even using the same data and key, the result will be different -- but still valid. One should not expect to get the same output.

AutoIt

Local $bSuccess = False

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

$oPubkey = ObjCreate("Chilkat.PublicKey")

$oSbPem = ObjCreate("Chilkat.StringBuilder")
Local $bCrlf = True
$oSbPem.AppendLine("-----BEGIN PUBLIC KEY-----",$bCrlf)
$oSbPem.AppendLine("MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA33TqqLR3eeUmDtHS89qF",$bCrlf)
$oSbPem.AppendLine("3p4MP7Wfqt2Zjj3lZjLjjCGDvwr9cJNlNDiuKboODgUiT4ZdPWbOiMAfDcDzlOxA",$bCrlf)
$oSbPem.AppendLine("04DDnEFGAf+kDQiNSe2ZtqC7bnIc8+KSG/qOGQIVaay4Ucr6ovDkykO5Hxn7OU7s",$bCrlf)
$oSbPem.AppendLine("Jp9TP9H0JH8zMQA6YzijYH9LsupTerrY3U6zyihVEDXXOv08vBHk50BMFJbE9iwF",$bCrlf)
$oSbPem.AppendLine("wnxCsU5+UZUZYw87Uu0n4LPFS9BT8tUIvAfnRXIEWCha3KbFWmdZQZlyrFw0buUE",$bCrlf)
$oSbPem.AppendLine("f0YN3/Q0auBkdbDR/ES2PbgKTJdkjc/rEeM0TxvOUf7HuUNOhrtAVEN1D5uuxE1W",$bCrlf)
$oSbPem.AppendLine("SwIDAQAB",$bCrlf)
$oSbPem.AppendLine("-----END PUBLIC KEY-----",$bCrlf)

;  Load the public key object from the PEM. 
$bSuccess = $oPubkey.LoadFromString($oSbPem.GetAsString())
If ($bSuccess = False) Then
    ConsoleWrite($oPubkey.LastErrorText & @CRLF)
    Exit
EndIf

Local $sOriginalData = "This is the original data to be SHA-256 hashed and RSA encrypted."

;  First we SHA-256 hash the original data.
$oCrypt = ObjCreate("Chilkat.Crypt2")
$oCrypt.HashAlgorithm = "SHA-256"
Local $oHashBytes
$oHashBytes = $oCrypt.HashString($sOriginalData)

;  Now to RSA encrypt using OAEP padding with SHA-256 for the mask function.
$oRsa = ObjCreate("Chilkat.Rsa")
$oRsa.PkcsPadding = False
$oRsa.OaepHash = "SHA256"
$oRsa.UsePublicKey($oPubkey)
$oRsa.EncodingMode = "base64"

;  Note: The OAEP padding uses random bytes in the padding, and therefore each time encryption happens,
;  even using the same data and key, the result will be different --  but still valid.  One should not expect
;  to get the same output.
Local $bUsePrivateKey = False
Local $sEncryptedStr = $oRsa.EncryptBytesENC($oHashBytes,$bUsePrivateKey)
If ($oRsa.LastMethodSuccess = False) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Base64 RSA encrypted output: " & $sEncryptedStr & @CRLF)