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Encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption

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Demonstrates how to encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption.

Note: This example requires Chilkat v9.5.0.67 or greater.

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Local $bSuccess = False

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

$oMime = ObjCreate("Chilkat.Mime")

; Create a MIME message to encrypt.
$oMime.NewMultipartMixed()
$oMime.AddHeaderField("someHeader1","Some value 1")
$oMime.AddHeaderField("someHeader2","Some value 2")

$oPart0 = ObjCreate("Chilkat.Mime")
$oPart0.AddHeaderField("hdrA","Some value A")
$oPart0.AddHeaderField("hdrB","Some value B")
$oPart0.ContentType = "text/plain"
$oPart0.SetBody "This is the plain-text body."

$oPart1 = ObjCreate("Chilkat.Mime")
$oPart1.AddHeaderField("hdrX","Some value X")
$oPart1.AddHeaderField("hdrY","Some value Y")
$oPart1.ContentType = "text/xml"
$oPart1.SetBody "<a>This is the XML body</a>"

$oMime.AppendPart($oPart0)
$oMime.AppendPart($oPart1)

; The MIME to be encrypted:
$oSbMime = ObjCreate("Chilkat.StringBuilder")
$oMime.GetMimeSb($oSbMime)
ConsoleWrite($oSbMime.GetAsString() & @CRLF)

; 	Content-Type: multipart/mixed; boundary="------------080303020600020604010008"
; 	someHeader1: Some value 1
; 	someHeader2: Some value 2
; 
; 	--------------080303020600020604010008
; 	hdrA: Some value A
; 	hdrB: Some value B
; 	Content-Type: text/plain
; 
; 	This is the plain-text body.
; 	--------------080303020600020604010008
; 	hdrX: Some value X
; 	hdrY: Some value Y
; 	Content-Type: text/xml
; 
; 	<a>This is the XML body</a>
; 	--------------080303020600020604010008--
; 

; Load an RSA-based certificate.
; (Encrypting MIME only requires the public key.  Decrypting MIME requires the private key.)
$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadFromFile("qa_data/rsaes-oaep/cert.pem")
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Set the email object properties to indicate the desired encryption.
$oMime.Pkcs7CryptAlg = "aes"
; If AES-256 is desired, set the following property to 256.
$oMime.Pkcs7KeyLength = 128
$oMime.OaepPadding = True
; Other choices for the OAEP hash algorithm are "sha1", "sha384", and "sha512"
$oMime.OaepHash = "sha256"

; Encrypt the MIME (to create S/MIME, which stands for "Secure MIME")
$bSuccess = $oMime.Encrypt($oCert)
If ($bSuccess <> True) Then
    ConsoleWrite($oMime.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("---------------" & @CRLF)
ConsoleWrite("Encrypted MIME:" & @CRLF)
ConsoleWrite("---------------" & @CRLF)
ConsoleWrite($oMime.GetMime() & @CRLF)

ConsoleWrite("Success." & @CRLF)

; ---------------------------------------------------
; This is sample output for RSAES-OAEP encrypted MIME:
; ---------------------------------------------------

; Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
; someHeader1: Some value 1
; someHeader2: Some value 2
; Content-Disposition: attachment; filename="smime.p7m"
; Content-Transfer-Encoding: base64
; 
; MIIDvAYJKoZIhvcNAQcDoIIDrTCCA6kCAQAxggGgMIIBnAIBADB1MGgxCzAJBgNVBAYTAlVTMQsw
; CQYDVQQIDAJJTDEQMA4GA1UEBwwHV2hlYXRvbjEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQ
; dHkgTHRkMRcwFQYDVQQDDA5DaGlsa2F0V2lkZ2V0cwIJAMRwugDmvniwMBwGCSqGSIb3DQEBBzAP
; oA0wCwYJYIZIAWUDBAIBBIIBAFaUL1ga1bOrdqYKcMm+FHUacBvzfBxk0fnPA0AMBdN8BvTWT3CN
; YuqBhjOGyq0FpYD9pVZybUuFMCVsVyIW2O62HnsOK58YaPEUUcdH2sI+yjqX9UAn0P0nVDSsVdeK
; W8x9kMfZg+3UP+y1q+lu7VRJO3f2C9oLQpTkc4VW4n7UOcUI0waykLCjCTL8lFDb7/J3GeuMKyhH
; 5riNz50kpbzqn7m2Ks9yA+QmcTdXclclGFr2vwEUFzSdT2pxh/vaUrogCxkYWbQ2eV7vZg6O4kV0
; aqHBqySkPTAzHKiHH8K8GVdlTuJ8350CpICa4T8w7/Ht5I7dyOPPKy4C+rVtrvcwggH+BgkqhkiG
; 9w0BBwEwHQYJYIZIAWUDBAECBBDTC2WNBN+z2I47/4Feu9YqgIIB0MZvl3nC/q/Wzil6HtfQTr12
; Q5moHY+ORzAa1P9XvX2ZUFhW530mV395mQw/A4o4ekmX9eRPEZquYzZPLT8hNeZIuNdhpcSQUmad
; rKnKkR0wKJ3jJ3LhOIohVBQSYs8kVDZKq6lJBIznlsurFelZoNEhyRschhteDZx5rb7fCe8c2+/O
; DHxaqaHCAzm/Bd7kcg6FFfuTZy3tu0PgP5IsXN4OFA3kkvwjAs4XsVS8jdIcmDNBkYieE8WmJOIm
; Mz7mh/CHWLgWfGKa0Dkb9RcbFgLwYNT3GzuXFw9XPbKkEZjEAtJajWbN6P0WQl96YYd9qZxUpGxZ
; zjTHEYzViUdUXolfpLufttrRXyxN1RFWhNFMFbv66xYqklMSgpdM/Mbk+EuvX6eXayDPvDBpfYMw
; NoRAzv1Ony2c0ez9rBemJICicxAzpuvHbRxdjYs63Dnv+TYgpBK12AxWWpPIjXvw0WQKgTC3Tg8s
; EnuGhpENqso/clJBEBSn4+2WhYtYbdI5sVme67lvqQl1Xxy3r18SWaQbyDOwgYi1E+54lMDOxMy0
; y0FPHk5pP45DnXWj+XORPp5LhuZr5mf62YOXSSUwR5P0cXy4Rc+pN5lhRQPCf5z2