I think I've found a few bugs.

First of all, the constant in xp_generagekey:proc.cpp & blowfish*:proc.cpp

#define ERR_KEY_SIZE"Key (@param2) must be 32 - 448 bits in length (8 - 56...

The current version let's you specify the DB, but it doesn't parse select statements for intellisense (that being the current project). If you want, I can still pack it...