Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx> wrote: > On Tue, 2017-04-18 at 17:17 -0300, Thiago Jung Bauermann wrote: > > IMA will use the module_signature format for append signatures, so export > > the relevant definitions and factor out the code which verifies that the > > appended signature trailer is valid. > > > > Also, create a CONFIG_MODULE_SIG_FORMAT option so that IMA can select it > > and be able to use validate_module_signature without having to depend on > > CONFIG_MODULE_SIG. > > Basically we want to generalize the concept of an appended signature. > Referring to it as a "module signature format" seems a bit confusing. > > David, would you have a problem with changing the appended string from > "~Module signature appended~\n" to something more generic? Conceptually, no. Is it possible that doing so could break someone's module that they load on multiple versions of the kernel? Say a module that only exports things and doesn't use anything from the core or any other module. Also, it needs to reasonably long and distinct enough to prevent a false positive match. David
