encrypt ntlm authorization

While running the Test suite with command -a or -A. Authorization Information (Password is printing as clear text) What is the possible way to mask the password or restrict printing the password. Following is the sample result.

----------------- Properties ------------------------------
Endpoint: https://Testservices.svc
Username: Testuser
domain: Testdomain
Encoding: UTF-8
Password: Ascleartext (Excepting as *******)