(Ruby) Use HTTPS Client Certificate from .cer and .key Files

Demonstrates how to load a cert + private key from .cer and .key (base64) files and use it for mutual TLS authentication (client-side certificate).

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.

http = Chilkat::CkHttp.new()

cert = Chilkat::CkCert.new()
privKey = Chilkat::CkPrivateKey.new()

# Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
success = cert.LoadFromFile("qa_data/certs/sample_cert_a.cer")
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

# Load the private key.
bd = Chilkat::CkBinData.new()
success = bd.LoadFile("qa_data/certs/sample_key_a.key")
success = privKey.LoadAnyFormat(bd,"privateKeyPasswordIfNecessary")
if (success != true)
    print privKey.lastErrorText() + "\n";
    exit
end

# Associate the private key with the cert.
success = cert.SetPrivateKey(privKey)
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

# Set the certificate to be used for mutual TLS authentication
# (i.e. sets the client-side certificate for two-way TLS authentication)
success = http.SetSslClientCert(cert)
if (success != true)
    print http.lastErrorText() + "\n";
    exit
end

# At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
# connection will automatically use it if the server demands a client-side cert.