Cloud Apps WSS handshake using weak cipher suite

[Jack-Byrne]

Bug Report

During the WSS connection with a cloud app, the ssl handshake is failing with the message "dh key length too small".

This was tested with a 2048 bit RSA signed CA certificate so the issue must be with the cipher suite key exchange method used by Core & the cloud application.

Reproduction Steps

1. Setup sdl java se app to use wss connections
2. Setup sdl core to connect to java app with a wss connection
3. Activate app

Expected Behavior

Secured communication is established and the app registers.

Observed Behavior

WSS error: dh key length too small, connection is not established

OS & Version Information

• OS/Version: Ubuntu 20 with openssl 1.1.1
• SDL Core Version: 8.1
• Testing Against: SDL Java SE in Android studio