opscode/knife-windows — pull request #129 by siddheshwar-more (2014-11-19 15:26:47+00:00)
Title: Add --winrm-authentication-protocol option 

@adamedx @NimishaS

--winrm-authentication-protocol option has [basic, negotiate, kerberos] values.
On windows --winrm-authentication-protocol = 'negotiate' applies 'winrm-s' monkey patch to do encrypted winrm communication.