-> when the sha1 algorithm is requested through the crypto API
(which has a module autoloader) the z990 module will be loaded.
-TBD: a userspace module probin mechanism
+TBD: a userspace module probing mechanism
something like 'probe sha1 sha1_z990 sha1' in modprobe.conf
- -> try module sha1_z990, if it fails to load load standard module sha1
+ -> try module sha1_z990, if it fails to load standard module sha1
the 'probe' statement is currently not supported in modprobe.conf