i should have explained further. I already was using a physical PACTOR DR-7800 modem which includes SCS ALE and AES256 firmware. I use CoolTerm to control it as the SCS Chat ALE software does not allow full of the modem. NOW VARA HF Winlink (and P2P) have the encryption option) so a number of operators are using that over buying an expensive PACTOR modem. The VARA encryption is working well so far. When you connect to another station the VARA screen turns a nice ORANGE colour to alert you tht encryption is running. Of course I am using VARA's own included software modem. So far so good!
Lawrence