(Ruby) SFTP use Cert's Private Key for Authentication (Windows)

Demonstrates how to use the private key of a pre-installed certificate (on Windows) for SFTP authentication. The certificate's private key must be marked as "exportable" when originally installed.

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

require 'chilkat'

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

cert = Chilkat::CkCert.new()

# Load the certificate from the Windows certificate store
success = cert.LoadByCommonName("my_cert_common_name")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

# Get the private key.  
# privKey is a CkPrivateKey
privKey = cert.ExportPrivateKey()
if (cert.get_LastMethodSuccess() == false)
    print cert.lastErrorText() + "\n";
    exit
end

privKeyPem = privKey.getPkcs8Pem()
if (privKey.get_LastMethodSuccess() == false)
    print privKey.lastErrorText() + "\n";
    exit
end

sshKey = Chilkat::CkSshKey.new()
success = sshKey.FromOpenSshPrivateKey(privKeyPem)
if (success == false)
    print sshKey.lastErrorText() + "\n";
    exit
end

# Connect to an SSH/SFTP server
sftp = Chilkat::CkSFtp.new()
success = sftp.Connect("sftp.example.com",22)
if (success == false)
    print sftp.lastErrorText() + "\n";
    exit
end

# Authenticate with the SSH server using a username + private key.
# (The private key serves as the password.  The username identifies
# the SSH user account on the server.)
success = sftp.AuthenticatePk("mySshLogin",sshKey)
if (success == false)
    print sftp.lastErrorText() + "\n";
    exit
end

print "OK, the connection and authentication with the SSH server is completed." + "\n";

# This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...