NiLuJe:
Could you please add my new hacks to white list:
update_checkmd5
update_emergency
P.S.
1. There small problem with white list. If user adds some custom hacks and install latest version of your Jailbreak, you will leave edited whitelist and new hacks (if it has in new Jail) will lost. May be, the way is to add custom_whitelist where users can add custom hacks. Or IMHO, better way to do auto detect (in example, simply verify sign via openssl)

2. If you edit whitelist in most text editors in MS Windows, they adds CRLF rather Unix like LF only, after this, Jail deny install ANY hacks.