Transport Layer Security support

modulename: tls.ko

configname: CONFIG_TLS

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Transport Layer Security support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Enable kernel support for TLS protocol. This allows symmetric
encryption handling of the TLS protocol to be done in-kernel.

If unsure, say N.

source code:
net/tls/