6 engine - load and query engines
26 The B<engine> command is used to query the status and capabilities
27 of the specified B<engine>'s.
28 Engines may be speicifed before and after all other command-line flags.
29 Only those specified are queried.
35 =item B<-v> B<-vv> B<-vvv> B<-vvvv>
37 Provides information about each specified engine. The first flag lists
38 all the possible run-time control commands; the second adds a
39 description of each command; the third adds the input flags, and the
40 final option adds the internal input flags.
44 Lists the capabilities of each engine.
48 Tests if each specified engine is available, and displays the answer.
52 Displays an error trace for any unavailable engine.
54 =item B<-pre> I<command>
55 =item B<-post> I<command>
57 Command-line configuration of engines.
58 The B<-pre> command is given to the engine before it is loaded and
59 the B<-post> command is given after the engine is loaded.
60 The I<command> is of the form I<cmd:val> where I<cmd> is the command,
61 and I<val> is the value for the command.
62 See the example below.
68 To list all the commands available to a dynamic engine:
70 % openssl engine -t -tt -vvvv dynamic
71 (dynamic) Dynamic engine loading support
73 SO_PATH: Specifies the path to the new ENGINE shared library
75 NO_VCHECK: Specifies to continue even if version checking fails (boolean)
76 (input flags): NUMERIC
77 ID: Specifies an ENGINE id name for loading
79 LIST_ADD: Whether to add a loaded ENGINE to the internal list (0=no,1=yes,2=mandatory)
80 (input flags): NUMERIC
81 DIR_LOAD: Specifies whether to load from 'DIR_ADD' directories (0=no,1=yes,2=mandatory)
82 (input flags): NUMERIC
83 DIR_ADD: Adds a directory from which ENGINEs can be loaded
85 LOAD: Load up the ENGINE specified by other settings
86 (input flags): NO_INPUT
88 To list the capabilities of the I<rsax> engine:
91 (rsax) RSAX engine support
93 (dynamic) Dynamic engine loading support