(Ruby) SMTP Login Secure

Demonstrates how to set the SMTP password using a secure string.

This example requires Chilkat v9.5.0.71 or greater.

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()

#  Imagine we've previously saved our encrypted login and password within a JSON config file
#  that contains this:

#  {
#    "smtp_login": "D7lnlWY291LKMeChlvQq7N/Tg7ieuSB15a+9Ekyd0R4=",
#    "smtp_password": "5neIq9Jmn0E3p71N6Yc8TA=="
#  }

json = Chilkat::CkJsonObject.new()
json.LoadFile("qa_data/passwords/smtp.json")

crypt = Chilkat::CkCrypt2.new()

#  These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
crypt.put_CryptAlgorithm("aes")
crypt.put_CipherMode("cbc")
crypt.put_KeyLength(128)
crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex")
crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex")
crypt.put_EncodingMode("base64")

ssLogin = Chilkat::CkSecureString.new()
ssPassword = Chilkat::CkSecureString.new()

#  Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
#  a randomly generated session key.)
crypt.DecryptSecureENC(json.stringOf("smtp_login"),ssLogin)
crypt.DecryptSecureENC(json.stringOf("smtp_password"),ssPassword)

#  Set the SMTP domain, login, and password
mailman.put_SmtpHost("smtp.gmail.com")
mailman.put_SmtpSsl(true)
mailman.put_SmtpPort(465)

mailman.put_SmtpUsername(ssLogin.access())
#  Set the SmtpPassword property via the SetPassword method using the secure string.
mailman.SetPassword("smtp",ssPassword)

#  Connect and authenticate..
success = mailman.SmtpConnect()
if (success != true)
    print mailman.lastErrorText() + "\n";
    exit
end

success = mailman.SmtpAuthenticate()
if (success != true)
    print mailman.lastErrorText() + "\n";
    exit
end

print "SMTP login successful." + "\n";

#  ...

mailman.CloseSmtpConnection()