(Ruby) Find Certificate for Email Encryption

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

mailman = Chilkat::CkMailMan.new()

# Set the SMTP server.
mailman.put_SmtpHost("smtp.example.com")

# Create a new email object
email = Chilkat::CkEmail.new()

email.put_Subject("This email is encrypted")
email.put_Body("This is a digitally encrypted mail")
email.put_From("Joe <joe@example.com>")
# Emails are encrypted using the recipient's certificate.
recipientEmailAddr = "jane@example2.com"
email.AddTo("Jane",recipientEmailAddr)

# Indicate that the email is to be sent encrypted.
email.put_SendEncrypted(true)

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

cert = Chilkat::CkCert.new()
# 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)
    print cert.lastErrorText() + "\n";
    exit
end

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

success = mailman.SendEmail(email)
if (success != true)
    print mailman.lastErrorText() + "\n";
else
    print "Encrypted Mail Sent!" + "\n";
end