Radius Authentication Plugin Challenge - Joomla! Forum - community, help and support

hi,

how can make custom authentication plugin started onuserauthenticate event popup new (challenge) authentication box?

what have custom radius authentication server sends otp (one time password) user via sms. point server needs maintain socket session open , sends "challenge" request joomla. once joomla receives challenge code, authentication plugin popup new authentication form user put password...

everything working fine can't make plugin display content. custom radius authentication plugin being started onuserauthenticate event. there way popup window custom plugin code? function should use?

process:
1) user tries authenticate in joomla using username , password;
2) joomla verifies if password valid consulting radius server (opens socket).
3) radius sends challenge code joomla, , otp sms user(same socket).
3) authentication plugin receives challenge code , pops window user insert otp(same socket).
4) joomla verifies otp against radius server(same socket), , if correct, authenticates user in joomla.

thanks,
a

anybody can me? please!!! nothing, not guide line, or question back?