Tcl Requires Chilkat v11.0.0+
Tcl
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 Tcl Downloads
load ./chilkat.dll
set success 0
# 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.)
set pfx [new_CkPfx]
set success [CkPfx_LoadPfxFile $pfx "qa_data/rsassa-pss/privatekey.pfx" "PFX_PASSWORD"]
if {$success == 0} then {
puts [CkPfx_lastErrorText $pfx]
delete_CkPfx $pfx
exit
}
set email [new_CkEmail]
# Create a simple email.
CkEmail_put_Subject $email "Sample RSASSA-PSS Signed Email"
CkEmail_put_Body $email "Sample RSASSA-PSS Signed Email"
CkEmail_put_From $email "from_name@mydomain.com"
# Add one ore more recipients..
CkEmail_AddTo $email "Chilkat Support" "support@chilkatsoft.com"
CkEmail_AddTo $email "Chilkat GMail" "chilkat.support@gmail.com"
# Indicate that the email is to be signed, and that we want to use RSASSA-PSS.
CkEmail_put_SendSigned $email 1
CkEmail_put_SigningAlg $email "pss"
CkEmail_put_SigningHashAlg $email "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.)
set cert [new_CkCert]
set success [CkPfx_CertAt $pfx 0 $cert]
if {$success == 0} then {
puts [CkPfx_lastErrorText $pfx]
delete_CkPfx $pfx
delete_CkEmail $email
delete_CkCert $cert
exit
}
# Tell the email object to use this cert (and private key) for signing.
CkEmail_SetSigningCert $email $cert
set mailman [new_CkMailMan]
# Set the SMTP settings for your email account on your mail server.
CkMailMan_put_SmtpUsername $mailman "SMTP_LOGIN"
CkMailMan_put_SmtpPassword $mailman "SMTP_PASSWORD"
CkMailMan_put_SmtpHost $mailman "MY_SMTP_DOMAIN_OR_IP"
CkMailMan_put_SmtpPort $mailman 587
CkMailMan_put_StartTLS $mailman 1
# 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..
CkMailMan_put_OpaqueSigning $mailman 0
# Send the email. The mailman will sign the email as directed by the
# property settings of the email object.
set success [CkMailMan_SendEmail $mailman $email]
if {$success == 0} then {
puts [CkMailMan_lastErrorText $mailman]
delete_CkPfx $pfx
delete_CkEmail $email
delete_CkCert $cert
delete_CkMailMan $mailman
exit
}
set success [CkMailMan_CloseSmtpConnection $mailman]
if {$success != 1} then {
puts "Connection to SMTP server not closed cleanly."
}
puts "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
# ZXQgV2lkZ2l0cyBQdHkgTHRkMQ8wDQYDVQQDDAZXaWRnZXQxKDAmBgkqhkiG9w0BCQEWGWFkbWlu
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# 41wQ5A==
#
# --------------050103020705000601010800--
delete_CkPfx $pfx
delete_CkEmail $email
delete_CkCert $cert
delete_CkMailMan $mailman