From 631cc66eb9eaa7296e303197ff1eb0f55e32b61d Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 26 Sep 2012 10:09:51 +0100 Subject: MODSIGN: Provide module signing public keys to the kernel Include a PGP keyring containing the public keys required to perform module verification in the kernel image during build and create a special keyring during boot which is then populated with keys of crypto type holding the public keys found in the PGP keyring. These can be seen by root: [root@andromeda ~]# cat /proc/keys 07ad4ee0 I----- 1 perm 3f010000 0 0 crypto modsign.0: RSA 87b9b3bd [] 15c7f8c3 I----- 1 perm 1f030000 0 0 keyring .module_sign: 1/4 ... It is probably worth permitting root to invalidate these keys, resulting in their removal and preventing further modules from being loaded with that key. Signed-off-by: David Howells Signed-off-by: Rusty Russell --- kernel/module-internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/module-internal.h') diff --git a/kernel/module-internal.h b/kernel/module-internal.h index 033c17fd70ef..6114a13419bd 100644 --- a/kernel/module-internal.h +++ b/kernel/module-internal.h @@ -9,5 +9,7 @@ * 2 of the Licence, or (at your option) any later version. */ +extern struct key *modsign_keyring; + extern int mod_verify_sig(const void *mod, unsigned long modlen, const void *sig, unsigned long siglen); -- cgit