Is it possible to log failed SASL authentication user passwords?

In case of unsuccessful user authentication, SaslServerPlainImpl writes the following log to info.log:

org.jivesoftware.openfire.net.SASLAuthentication - User Login Failed. PLAIN authentication failed for: echo-core-166510@mobile-central

Is it possible to write an Openfire plugin to log not only username, but passwords too?

As far as i see, neither IQHandler nor PacketInterceptor won’t intercept auth requests.