how to change password for fortress

[suman karki <suman.karki@bizruntime.com>]

If i have to change password of : like
--  http.pw=gX9JbCTxJW5RiH+otQEX0Ja0RIAoPBQf

--  root.pw={SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
--  cfg.root.pw=W7T0G9hylKZQ4K+DF8gfgA==
--  log.root.pw={SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
--  cfg.log.root.pw=W7T0G9hylKZQ4K+DF8gfgA==

what are the encryption method used in http.pw and roo.pw and how to generate password for them?

then should i have to change them only  in build.properties or in any other files also .

tell me what are the process to change password to those place.

because if i change password building process for fortress fails.