Thank you, Mark,
Simba driver documentation you can find in CR Installation folder at:
C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\win32_x86\sforce
There are 4 pdf files, but I was not able to find encryption info there.
Could you please refer to the relevant SFDC documentation?
I will forward the request to Product Developers so they can verify with Simba.
Thanks