Xojo Plugin
Xojo Plugin
Specify a Certificate for Encrypted Email
See more Email Object Examples
Demonstrates the Chilkat Email.AddEncryptCert method, which explicitly specifies a certificate to use when sending encrypted email. Call it once per recipient certificate; ClearEncryptCerts clears the list. This example loads a recipient certificate, registers it, and enables encrypted sending.
Background: When encrypting to multiple people, each recipient needs to be able to decrypt with their own private key. S/MIME handles this by encrypting the message's one-time content key separately under each recipient's public certificate and including all of those wrapped keys in the message.
AddEncryptCert is how you build that recipient list — one call per certificate — giving explicit control over exactly whose certificates are used rather than relying on automatic lookup.Chilkat Xojo Plugin Downloads
Dim success As Boolean
success = False
// Demonstrates the AddEncryptCert method, which explicitly specifies a certificate for
// sending encrypted email. Call it once per recipient certificate. Use ClearEncryptCerts
// to clear the list.
Dim email As New Chilkat.Email
email.Subject = "Encrypted email"
email.Body = "Encrypted to the specified recipient certificate(s)."
email.From = "alice@example.com"
success = email.AddTo("Bob","bob@example.com")
// Load a recipient certificate (public key) and add it to the encryption cert list.
Dim cert As New Chilkat.Cert
success = cert.LoadFromFile("qa_data/certs/recipient.cer")
If (success = False) Then
System.DebugLog(cert.LastErrorText)
Return
End If
success = email.AddEncryptCert(cert)
If (success = False) Then
System.DebugLog(email.LastErrorText)
Return
End If
// Request encrypted sending.
email.SendEncrypted = True
System.DebugLog("Added the recipient's encryption certificate.")
// Note: The path "qa_data/certs/recipient.cer" is a relative local filesystem path,
// relative to the current working directory of the running application.