Dne 20.5.2015 v 05:47 Jiri Kosina napsal(a): > On Tue, 19 May 2015, David Howells wrote: > >> That wouldn't very convenient for building our kernels in our build farm >> - we have a lot of machines and all of them would have to be equiped >> with the key. Besides, we *want* to discard the private key where >> possible as soon as possible because then we can't leak it and we can't >> be forced to disclose it. > > You can still have a dedicated machine that's used just for signing the > binaries. That machine wouldn't be connected to the network, would be > physically secured, and would sign through a serial line or so.
Right, that's what CONFIG_MODULE_SIG_ALL=n is meant for -- build the public key into the kernel, but sign the modules later, outside of the build system. So you still have to trust the build machine to build what you ask it to build, but you do not have to trust it not to leak your private key. Michal -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
