[PATCH v2] modsign: use shred to overwrite the private key before deleting it

[Alexander Holler]

This is for the more paranoid people, also it's
questionable what paranoid nowadays means.

It uses shred, in the hope it will somedays learn how to shred stuff on
FLASH based devices securely too, once that has become possible.

Signed-off-by: Alexander Holler <holler@xxxxxxxxxxxxx>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 7ad66de..733421b 100644
--- a/Makefile
+++ b/Makefile
@@ -1132,7 +1132,7 @@ ifeq ($(CONFIG_MODULE_SIG_THROW_AWAY), y)
 	@echo "###"
 	@echo "### Deleting key used to sign modules."
 	@echo "###"
-	@rm ./signing_key.priv
+	@shred -n1 -u ./signing_key.priv
 	@rm ./signing_key.x509
 endif
 
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/