[stunnel-users] How to hide proxy password from config file

Hi, I have to create tunnel between server and client. Client have proxy configured in between. So i use below in /etc/stunnel/stunnel.config

pid = /var/run/stunnel.pid

cert = /home/client.crt

key = /home/client.key

options = NO_SSLv2

debug = 7

output = /var/log/stunnel4/stunnel.log

client = yes

CAfile=/home/**chain.pem

verify=2

[test]

protocol = connect

accept = 127.0.0.1:10000

protocolHost = server.xxxx.com:443

connect = <PROXYIP>:<PROXY port>

protocolUsername = user1

protocolPassword = password

protocolAuthentication = Basic

then i bring up the service.

With above configuration connection works file.

Now i don't want proxy password to be clear text in this case.

Any pointers plz

Thanks,

Vj