i have problem on squid 2.7 compiled with --enable-ssl on debian6 installed on vmware player

I add this line to squid.conf but when i put proxy settings in browser((firefox)) i get " connection was reset "

https_port 443 cert=/etc/squid/testcert.cert key=/etc/squid/testkey.pem
the above line is the only line added to squid.conf

and there is error in squid's cache.log
clientNegotiateSSL: Error negotiating SSL connection on FD 29: error:1407609B:SSL routines:SSL23_GET_CLIENT_HELLO:https proxy request (1/-1)
there wasn't real solution in Internet just some places said that it's problem with browser