EXEC [master].[dbo].[xp_regread]    @rootkey='HKEY_LOCAL_MACHINE',
                                    @key='SOFTWAREMicrosoftMicrosoft SQL ServerMSSQL<version>.<instancename>MSSQLServerSuperSocketNetLib',
                                    @value_name='ForceEncryption'

SELECT encrypt_option, *
FROM sys.dm_exec_connections