> Is this true? If so, is it still there?

For a point to start the hunting:

- in <FB dir>/include/ibase.h you can see a constant for connect:
isc_dpb_encrypt_key, this is to isc_attach_database().

In Firebird source you can find it and see what it do ;)

Maybe a conditional compilation remove it from FB, like other non good
tested feature ?

eMeL

ps:
Sorry my terrible English. My native language is C++ ;)

funny: I answered it a few minute ago in a parallel thread : "how to
protect DATA"