Chilkat2-Python
Chilkat2-Python
Send a Signed Email using RSASSA-PSS with SHA256
See more SMTP Examples
Demonstrates how to sign and send an email using the RSASSA-PSS signing algorithm with the SHA256 hash algorithm. .Chilkat Chilkat2-Python Downloads
import sys
import chilkat2
success = False
# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
# Get a digital certificate with private key from a .pfx
# (Chilkat has many different ways to provide a cert + private key for siging.
# Using a PFX is just one possible option.)
pfx = chilkat2.Pfx()
success = pfx.LoadPfxFile("qa_data/rsassa-pss/privatekey.pfx","PFX_PASSWORD")
if (success == False):
print(pfx.LastErrorText)
sys.exit()
email = chilkat2.Email()
# Create a simple email.
email.Subject = "Sample RSASSA-PSS Signed Email"
email.Body = "Sample RSASSA-PSS Signed Email"
email.From = "from_name@mydomain.com"
# Add one ore more recipients..
email.AddTo("Chilkat Support","support@chilkatsoft.com")
email.AddTo("Chilkat GMail","chilkat.support@gmail.com")
# Indicate that the email is to be signed, and that we want to use RSASSA-PSS.
email.SendSigned = True
email.SigningAlg = "pss"
email.SigningHashAlg = "sha256"
# Get the certificate to be used for signing.
# (The typical case for a PFX is that it contains a cert with an associated private key,
# as well as other certificates in the chain of authentication. The cert with the private
# key should be in the first position at index 0.)
cert = chilkat2.Cert()
success = pfx.CertAt(0,cert)
if (success == False):
print(pfx.LastErrorText)
sys.exit()
# Tell the email object to use this cert (and private key) for signing.
email.SetSigningCert(cert)
mailman = chilkat2.MailMan()
# Set the SMTP settings for your email account on your mail server.
mailman.SmtpUsername = "SMTP_LOGIN"
mailman.SmtpPassword = "SMTP_PASSWORD"
mailman.SmtpHost = "MY_SMTP_DOMAIN_OR_IP"
mailman.SmtpPort = 587
mailman.StartTLS = True
# Signed email can be sent in two different ways.
# In a multipart/signed email, the signature is attached as a separate MIME part.
# In an opaque email (signedData) the content of the email is encapsulated within the signature
# and the email is sent as "application/pkcs7-mime".
# Either should be fine, but some receiving systems might require one or the other..
mailman.OpaqueSigning = False
# Send the email. The mailman will sign the email as directed by the
# property settings of the email object.
success = mailman.SendEmail(email)
if (success == False):
print(mailman.LastErrorText)
sys.exit()
success = mailman.CloseSmtpConnection()
if (success != True):
print("Connection to SMTP server not closed cleanly.")
print("Mail Sent!")
# -----------------------------------------------------------
# This is the MIME of the RSASSA-PSS signed email that was sent
# MIME-Version: 1.0
# Date: Thu, 20 Apr 2017 10:14:58 -0500
# Message-ID: <3682A87344CB3A4FB5EB5BC9908C0C4DA01DA461@CHILKAT13>
# Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha256;
# boundary="------------050103020705000601010800"
# X-Priority: 3 (Normal)
# Subject: Sample RSASSA-PSS Signed Email
# From: support@chilkatsoft.com
# To: "Chilkat Support" <support@chilkatsoft.com>,
# "Chilkat GMail" <chilkat.support@gmail.com>
#
# --------------050103020705000601010800
# Content-Type: text/plain; format=flowed
# Content-Transfer-Encoding: 7bit
#
# Sample RSASSA-PSS Signed Email
# --------------050103020705000601010800
# Content-Transfer-Encoding: base64
# Content-Type: application/pkcs7-signature; name="smime.p7s"
# Content-Disposition: attachment; filename="smime.p7s"
#
# MIIG5wYJKoZIhvcNAQcCoIIG2DCCBtQCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg
# ggL4MIIC9DCCAl2gAwIBAgIJAMPsJCT11cniMA0GCSqGSIb3DQEBCwUAMIGSMQswCQYDVQQGEwJB
# VTERMA8GA1UECAwIVmljdG9yaWExEjAQBgNVBAcMCU1lbGJvdXJuZTEhMB8GA1UECgwYSW50ZXJu
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# --------------050103020705000601010800--