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Send Encrypted Email using RSAES-OAEP with AES-128 CBC and SHA256

See more SMTP Examples

Demonstrates how to send encrypted email 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 example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

; Load an RSA-based certificate.
; (Encrypting an email only requires the public key.  Decrypting an email 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

$oEmail = ObjCreate("Chilkat.Email")

; Create a simple email.
$oEmail.Subject = "Sample RSAES-OAEP Encrypted Email"
$oEmail.Body = "Sample RSAES-OAEP Encrypted Email"
$oEmail.From = "support@chilkatsoft.com"

; Add a recipient.
; (The email is encrypted using the recipient's certificate.
; If sending to multiple recipients, then the AddEncryptCert method would
; need to be called once for each recipient's certificate.)
$oEmail.AddTo("Chilkat GMail","chilkat.support@gmail.com")

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

; Provide the certificate to be used for encryption
$oEmail.AddEncryptCert($oCert)

; Don't forget to indicate that the email should be encrypted when sent..
$oEmail.SendEncrypted = True

; The mailman object will do the RSAES-OAEP encryption when sending.
$oMailman = ObjCreate("Chilkat.MailMan")

; Set the SMTP settings for your email account on your mail server.
$oMailman.SmtpUsername = "SMTP_LOGIN"
$oMailman.SmtpPassword = "SMTP_PASSWORD"
$oMailman.SmtpHost = "MY_SMTP_DOMAIN_OR_IP"
$oMailman.SmtpPort = 587
$oMailman.StartTLS = True

; Send the email.  The mailman will encrypt the email as directed by the 
; property settings of the email object.
$bSuccess = $oMailman.SendEmail($oEmail)
If ($bSuccess <> True) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oMailman.CloseSmtpConnection()
If ($bSuccess <> True) Then
    ConsoleWrite("Connection to SMTP server not closed cleanly." & @CRLF)
EndIf

ConsoleWrite("Mail Sent!" & @CRLF)

; -----------------------------------------------------------
; This is an example of an RSAES-OAEP encrypted email
; -----------------------------------------------------------

; MIME-Version: 1.0
; Date: Thu, 27 Apr 2017 08:43:32 -0500
; Message-ID: <772DC039F0259C474BAC60240EA2BA2272402308@CHILKAT13>
; Content-Type: application/pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
; Content-Transfer-Encoding: base64
; X-Priority: 3 (Normal)
; Subject: Sample RSAES-OAEP Encrypted Email
; From: support@chilkatsoft.com
; To: "Chilkat GMail" <chilkat.support@gmail.com>
; Content-Disposition: attachment; filename="smime.p7m"
; 
; MIICWQYJKoZIhvcNAQcDoIICSjCCAkYCAQAxggGgMIIBnAIBADB1MGgxCzAJBgNVBAYTAlVTMQsw
; CQYDVQQIDAJJTDEQMA4GA1UEBwwHV2hlYXRvbjEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQ
; dHkgTHRkMRcwFQYDVQQDDA5DaGlsa2F0V2lkZ2V0cwIJAMRwugDmvniwMBwGCSqGSIb3DQEBBzAP
; oA0wCwYJYIZIAWUDBAIBBIIBABr0E1dKJjK0FAYRz/NCtJmBeB0nUxgcuBnhGPI/UeyGub3cCo+K
; G5F4/iVTBJqVvYIF5+fvBnyTginwv7OiUiFWLyihiFC3NIyZJO22+XMHpNatCffTPZk10WswkTgk
; G3ApnRvGQAaldnFD0Hs8drPU4vBvY9QsjT7YDGa6u2NMX+sr1ewEZArqU0mNfJ6RsEYd5FQbFEVF
; qLmnz8Dt+yhoJlUtfUd8TXIeqHRJ7RxKOTSzlBZaAdTv2QX4oL9IcAgZeTg5iw+yRPkSAwWyg+I/
; 7fybLsUpRGDHTGUU+AvHvP0kYKa1mkvccBVEC/+4hEyhpS1tWIR5ByY6vM76Z+8wgZwGCSqGSIb3
; DQEHATAdBglghkgBZQMEAQIEEKqD0YDHX1NsVDaV32UczpeAcLteQyRPTV4hATjwcPiVelPfeWNs
; xZKRGaEBqLM8+Y+V4ciCFoOlgJuOcP4m1PTHyilfzd+SCsKz5l1C7+sfPf36n2aacX6IWga59Bz5
; QbWrOHDUT7O5PnGwKVgQFw3Cj4GrdPGWKcoqxB0HuKnj3WA=