openssl-engine - load and query engines

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       <https://www.openssl.org/source/license.html>.

3.4.1                                              2025-04-03                               OPENSSL-ENGINE(1SSL)

       This command has been deprecated.  Providers should be used instead of engines.

       This command is used to query the status and capabilities of the specified engines.  Engines may be
       specified before and after all other command-line flags.  Only those specified are queried.

OPENSSL_ENGINES
           The path to the engines directory.

       To list all the commands available to a dynamic engine:

        $ openssl engine -t -tt -vvvv dynamic
        (dynamic) Dynamic engine loading support
             [ unavailable ]
             SO_PATH: Specifies the path to the new ENGINE shared library
                  (input flags): STRING
             NO_VCHECK: Specifies to continue even if version checking fails (boolean)
                  (input flags): NUMERIC
             ID: Specifies an ENGINE id name for loading
                  (input flags): STRING
             LIST_ADD: Whether to add a loaded ENGINE to the internal list (0=no,1=yes,2=mandatory)
                  (input flags): NUMERIC
             DIR_LOAD: Specifies whether to load from 'DIR_ADD' directories (0=no,1=yes,2=mandatory)
                  (input flags): NUMERIC
             DIR_ADD: Adds a directory from which ENGINEs can be loaded
                  (input flags): STRING
             LOAD: Load up the ENGINE specified by other settings
                  (input flags): NO_INPUT

       To list the capabilities of the rsax engine:

        $ openssl engine -c
        (rsax) RSAX engine support
         [RSA]
        (dynamic) Dynamic engine loading support

       This command was deprecated in OpenSSL 3.0.

       openssl-engine - load and query engines

-help
           Display an option summary.

       -v-vv-vvv-vvvv
           Provides  information  about  each  specified  engine. The first flag lists all the possible run-time
           control commands; the second adds a description of each command; the third adds the input flags,  and
           the final option adds the internal input flags.

       -c  Lists the capabilities of each engine.

       -t  Tests if each specified engine is available, and displays the answer.

       -tt Displays an error trace for any unavailable engine.

       -precommand-postcommand
           Command-line  configuration  of engines.  The -pre command is given to the engine before it is loaded
           and the -post command is given after the engine is loaded.  The command is of the form cmd:val  where
           cmd is the command, and val is the value for the command.  See the example below.

           These two options are cumulative, so they may be given more than once in the same command.

openssl(1), config(5)

opensslengine [-help] [-v] [-vv] [-vvv] [-vvvv] [-c] [-t] [-tt] [-precommand] ...  [-postcommand] ...
       [engine ...]