Add commented out code for switching the crypto engine.
Add commented out code for switching the crypto engine.

Refs cakephp/cakephp#5496

QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp,makallio85/fish-diary,makallio85/fish-diary,QoboLtd/project-template-cakephp,ojengwa/cake-appengine,QoboLtd/project-template-cakephp,ojengwa/cake-appengine,makallio85/fish-diary