VB.NET

Find Certificate for Email Encryption

Demonstrates finding the recipient's certificate in the Windows certificate store and using it to send encrypted email. VB.NET

Dim success As Boolean = False

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

Dim mailman As New Chilkat.MailMan

' Set the SMTP server.
mailman.SmtpHost = "smtp.example.com"

' Create a new email object
Dim email As New Chilkat.Email

email.Subject = "This email is encrypted"
email.Body = "This is a digitally encrypted mail"
email.From = "Joe <joe@example.com>"
' Emails are encrypted using the recipient's certificate.
Dim recipientEmailAddr As String = "jane@example2.com"
email.AddTo("Jane",recipientEmailAddr)

' Indicate that the email is to be sent encrypted.
email.SendEncrypted = True

' This example demonstrates finding the email encryption certificate
' on a Windows system where the certificate is stored in the Windows 
' certificate store.

Dim cert As New Chilkat.Cert
' The recipient's certificate is used to encrypt.
' (Because the recipient is the only one in possession of the private key to decrypt.)
success = cert.LoadByEmailAddress(recipientEmailAddr)
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' Specify the certificate to be used for encryption.
success = email.SetEncryptCert(cert)

success = mailman.SendEmail(email)
If (success <> True) Then
    Debug.WriteLine(mailman.LastErrorText)
Else
    Debug.WriteLine("Encrypted Mail Sent!")
End If