Using a .cer Certificate File for Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer file.

Download Chilkat Ruby Library

require 'chilkat'

#  The mailman object is used for sending and receiving email.
mailman = Chilkat::CkMailMan.new()

#  Any string argument automatically begins the 30-day trial.
success = mailman.UnlockComponent("30-day trial")
if (success != true)
    print "Component unlock failed" + "\n"
    exit
end

#  Set the SMTP server.
mailman.put_SmtpHost("smtp.comcast.net")

#  Load the .cer file into a certificate object:
cert = Chilkat::CkCert.new()
success = cert.LoadFromFile("comodoChilkat.cer")
if (success != true)
    print cert.lastErrorText() + "\n"
    exit
end

#  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("Chilkat Support <support@chilkatsoft.com>")
email.AddTo("Comodo Test","comodo@chilkatsoft.com")

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

#  Specify the certificate:
email.SetEncryptCert(cert)

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