https://qa.drupal.org/pifr/test/655133.html
Clientcert (SSL/TLS) for login - 7.x-1.x | Drupal Quality Assurance
ssltls
https://go.googlesource.com/go/+/7c74b0db8a27188d0ca3bb2f4bd46d00c0dc8eea/src/crypto/tls/testdata/Client-TLSv12-ClientCert-RSA-AES256-GCM-SHA384
src/crypto/tls/testdata/Client-TLSv12-ClientCert-RSA-AES256-GCM-SHA384 - go - Git at Google
https://dev.lucee.org/t/cfhttp-clientcert-using-tls-1-2/1539
Cfhttp clientcert using tls 1.2 - google-group-archive - Lucee Dev
Feb 26, 2016 - Hi All I have a case where I need to do a https call using a client cert, at first this did not work at all until I have across the below fix...
using tlsgoogle group