non-existent method documented for Crypto.arcfour
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2769
Reported by Robert J. Budzynski, Warsaw University, Dept. of Physics Robert.Budzynski@fuw.edu.pl
as in summary: the documentation refers to set_key() but no such method is available to users of this program. The ones that are available (but not documented) are set_encrypt_key() and set_decrypt_key(), instead. Both of these are in fact the same and implemented by f_set_key(), hence the mixup.