Hello @G65434_2.
Do you have viewed this post: TlsTcpClient library on WebIDE published
Developed by @hirotakaster. It is based on Mbed TLS library and you are free to use them.
Just you need to have in mind that you have a high consumption of RAM, flash and high utilization of data that may be a problem for 3G devices.
But always you can use the Publish feature that is already encrypted.