AutoIt

Create PKCS7 (CMS) EnvelopedData

Encrypt some data to a recipient by creating a PKCS7 (CMS) EnvelopedData structure. The data will be encrypted using a symmetric content-encryption algorithm (e.g., AES), and the randomly generated symmetric key will be encrypted using the recipient’s RSA public key extracted from their X.509 certificate. AutoIt

Local $bSuccess = False

$oCrypt = ObjCreate("Chilkat.Crypt2")

;  Specify the encryption to be used.
;  "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped-data) message.
$oCrypt.CryptAlgorithm = "pki"
$oCrypt.Pkcs7CryptAlg = "aes"
$oCrypt.KeyLength = 256
$oCrypt.OaepHash = "sha256"
$oCrypt.OaepPadding = True

$oCert = ObjCreate("Chilkat.Cert")

;  Use a certificate found in the Windows certificate store.
$bSuccess = $oCert.LoadByCommonName("My Certificate")
If ($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"
$oCrypt.Charset = "utf-8"

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

;  -------------------------------------------------------------------------
;  See the following example to decrypt what was created in this example
;  Decrypt PKCS7 (CMS) EnvelopedData
;  -------------------------------------------------------------------------

ConsoleWrite($sResult & @CRLF)

;  Sample output:

;  MIICSgYJKoZIhvcNAQcDoIICOzCCAjcCAQAxggHiMIIB3gIBADCBljCBgTELMAkGA1UEBhMCSVQx
;  EDAOBgNVBAgMB0JlcmdhbW8xGTAXBgNVBAcMEFBvbnRlIFNhbiBQaWV0cm8xFzAVBgNVBAoMDkFj
;  dGFsaXMgUy5wLkEuMSwwKgYDVQQDDCNBY3RhbGlzIENsaWVudCBBdXRoZW50aWNhdGlvbiBDQSBH
;  MwIQPCWvkSv8oQ7xRmEHJ6TzEDA8BgkqhkiG9w0BAQcwL6APMA0GCWCGSAFlAwQCAQUAoRwwGgYJ
;  KoZIhvcNAQEIMA0GCWCGSAFlAwQCAQUABIIBAKqHAPQNSsQoX7B2NH7QyEOWQRsSVs8oCHXmy8f4
;  MVZD2er3bvYUCIomxpwbLEAl14qjUIMynahooYGgqip7+4FqL301G+BVjZVfEhHWj+VI1dAWnWuL
;  VHlvc/pbQNBWqV8rKVJsNIsuAZkdj4WSwLVKxYkYX43B8fh/g71XN2DTJu7Z/824v48KBmgpQBOT
;  2q7IcDGxNPAFN2p6eavIVGn2LvhEbf/Fszyj+GR5tMcnQP1BOLJ3s3JzUBbvj8hcZrF1Vhl9HnTU
;  YQx8G/KdW1mR+Wlhl3BWoK0LYKRTbnTx2BXOs0CY1SXOAdhKr01ZYjA+xW4nGzY0lfXS9QZjh9gw
;  TAYJKoZIhvcNAQcBMB0GCWCGSAFlAwQBKgQQw0xTbfmnt0zjWHo5SaQIp4AgxTVY9E/Ncqy6t+RM
;  8y4c3Av62/wB8IpPUEmtM2OeuZo=