Added --quiet to suppress message about gpg-agent already running.

plugins/gpg-agent/gpg-agent.plugin.zsh

 local GPG_ENV=$HOME/.gnupg/gpg-agent.env
 
 function start_agent_nossh {
-    eval $(/usr/bin/env gpg-agent --daemon --write-env-file ${GPG_ENV}) > /dev/null
+    eval $(/usr/bin/env gpg-agent --quiet --daemon --write-env-file ${GPG_ENV} 2> /dev/null)
+    chmod 600 ${GPG_ENV}
     export GPG_AGENT_INFO
 }
 
 function start_agent_withssh {
-    eval $(/usr/bin/env gpg-agent --daemon --enable-ssh-support --write-env-file ${GPG_ENV}) > /dev/null
+    eval $(/usr/bin/env gpg-agent --quiet --daemon --enable-ssh-support --write-env-file ${GPG_ENV} 2> /dev/null)
+    chmod 600 ${GPG_ENV}
     export GPG_AGENT_INFO
     export SSH_AUTH_SOCK
     export SSH_AGENT_PID
 }
 
-# make sure all created files are u=rw only
-umask 177
-
 # source settings of old agent, if applicable
 if [ -f "${GPG_ENV}" ]; then
   . ${GPG_ENV} > /dev/null