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

Signed-off-by: Alexander Holler <hol...@ahsoftware.de>
---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index 7ad66de..590ff53 100644
--- a/Makefile
+++ b/Makefile
@@ -1132,7 +1132,9 @@ ifeq ($(CONFIG_MODULE_SIG_THROW_AWAY), y)
        @echo "###"
        @echo "### Deleting key used to sign modules."
        @echo "###"
+       @dd status=none if=/dev/zero of=./signing_key.priv bs=4096 count=1
        @rm ./signing_key.priv
+       @dd status=none if=/dev/zero of=./signing_key.x509 bs=4096 count=1
        @rm ./signing_key.x509
 endif
 
-- 
2.0.5

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