(Ruby) Send Encrypted Email using Certificate in Apple Keychain

See more Apple Keychain Examples

Send encrypted (S/MIME) email using a certificate found in the Apple Keychain.

Note: This example requires Chilkat v10.1.2 or later.

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

require 'chilkat'

email = Chilkat::CkEmail.new()
email.put_Subject("This email is encrypted")
email.put_Body("This is a S/MIME encrypted mail")
email.put_From("Joe <joe@example.com>")

# Emails are encrypted using the recipient's certificate.
recipientEmailAddr = "jane@example2.com"
email.AddTo("",recipientEmailAddr)

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

cert = Chilkat::CkCert.new()

# -----------------------------------------------
# This example requires Chilkat v10.1.2 or later.
# -----------------------------------------------

# The recipient's certificate is used to encrypt.
# This will load the certificate from the Apple Keychain.
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)
email.put_SendEncrypted(true)

mailman = Chilkat::CkMailMan.new()
mailman.put_SmtpHost("smtp.example.com")
mailman.put_SmtpUsername("joe@example.com")
mailman.put_SmtpPort(587)
mailman.put_StartTLS(true)

# We'll get the SMTP password from the Apple Keychain.
# See how we originally saved the email credentials to the Keychain here:
# Save Email Credentials in Apple Keychain or Windows Credentials Manager
secrets = Chilkat::CkSecrets.new()

# On Windows, this is the Windows Credentials Manager
# On MacOS/iOS, it is the Apple Keychain
secrets.put_Location("local_manager")

# Specify the name of the secret.
# service and username are required.
# appName and domain are optional.
# Note: The values are arbitrary and can be anything you want.
json = Chilkat::CkJsonObject.new()
json.UpdateString("appName","MyEmailApp")
json.UpdateString("service","SMTP")
json.UpdateString("domain","example.com")
json.UpdateString("username","joe@example.com")

mailman.put_SmtpPassword(secrets.getSecretStr(json))

# Send the encrypted email.
# The email is encrypted and sent within the SendEmail function.
success = mailman.SendEmail(email)
if (success != true)
    print mailman.lastErrorText() + "\n";
    exit
end

print "Encrypted email sent!" + "\n";