steps to use a dynamic engine from an application

[Anil Gunturu]

I am just wondering about the steps to use a dynamic engine. Can somebody verify this:

    e = ENGINE_by_id("dynamic");

    if (!e) {
        return RC_ERROR;
    }

    if ((!ENGINE_ctrl_cmd_string(e, "SO_PATH", so_path, 0)) ||
        (!ENGINE_ctrl_cmd_string(e, "ID", "ATHENA", 0)) ||
        (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)))
    {
        ENGINE_free(e);
        return RC_ERROR;
    }

 

    if (!ENGINE_init(e)) {
        ENGINE_free(e);
        return RC_ERROR;
    }
   

    ENGINE_set_default_RSA(e);

 

Also, when do I need to call ENGINE_finish() and ENGINE_free()?

Thanks,

-Anil

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