S-MIME support

What are the options to sign and encrypt emails from E-Business Suite Workflow?

Is S-MIME support possible from E-Business Suite? Workflow Admin Guide mentions MIME

but not S-MIME.

Is native S-MIME support on the roadmap for next releases?

To provide adequate user security there is the S-MIME signed e-mail implemented at enterprise level,

to provide this security measures and cyber resilience to cope with the “ultimately” inherent weak cyber security of e-mail.

How can this security measure be integrated with EBS Workflow?