(AutoIt) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----

Demonstrates how to encrypt using a certificate to produce output such as:

-----BEGIN PKCS7-----
MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ...
...
...
-----END PKCS7-----

The certificate to be used is not your own, but the certificate of the intended recipient of the message.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

; Specify the encryption to be used.
; "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
$oCrypt.CryptAlgorithm = "pki"
$oCrypt.Pkcs7CryptAlg = "aes"
$oCrypt.KeyLength = 128
$oCrypt.OaepHash = "sha256"
$oCrypt.OaepPadding = True

; A certificate is needed as the encryption key..
$oCert = ObjCreate("Chilkat.Cert")
Local $bSuccess = $oCert.LoadFromFile("qa_data/certs/testCert.pem")
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Tell the crypt object to use the certificate.
$oCrypt.SetEncryptCert($oCert)

Local $sToBeEncrypted = "This string is to be encrypted."

; Get the result in multi-line BASE64 MIME format.
$oCrypt.EncodingMode = "base64_mime"

Local $sEncryptedStr = $oCrypt.EncryptStringENC($sToBeEncrypted)
If ($bSuccess <> True) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
$oSb = ObjCreate("Chilkat.StringBuilder")
$oSb.AppendLine("-----BEGIN PKCS7-----",True)
$oSb.Append($sEncryptedStr)
$oSb.AppendLine("-----END PKCS7-----",True)

Local $sOutStr = $oSb.GetAsString()

ConsoleWrite($sOutStr & @CRLF)

; Sample output:

; -----BEGIN PKCS7-----
; MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix
; GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
; Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50
; aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B
; AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37
; awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx
; H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36
; pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X
; e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf
; loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+
; TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ==
; -----END PKCS7-----