python-smime-email

Generate x509 SMIME signed emails with ease!

Usage

1. Generate the email raw content

   import smime_email
   
   data = b"Hello!"
   SMIME_KEY = smime_email.load_key("key_path.pem")
   SMIME_INTERMEDIATE = smime_email.load_certificates("intermediate_path.pem")
   SMIME_CERT = smime_email.load_certificates("cert_path.pem")[0]
   email_raw_bytes = smime_email.get_smime_attachment_content(data, SMIME_KEY, SMIME_INTERMEDIATE, SMIME_CERT)
   

2. Send it using any email library you like. Here is an example as Django email backend

   email_raw_bytes = smime_email.get_smime_attachment_content(data, SMIME_KEY, SMIME_INTERMEDIATE, SMIME_CERT)
   # ...
   class EmailBackend(BaseEmailBackend):
       def send_messages(self, message) -> int:
           with smtplib.SMTP(settings.EMAIL_HOST, settings.EMAIL_PORT) as server:
               server.sendmail(message.from_email, message.to, email_raw_bytes)
           return 1