Messages in this thread | | | Date | Wed, 28 Apr 2021 02:46:50 +0300 | From | Jarkko Sakkinen <> | Subject | Re: [PATCH v3 1/2] certs: Trigger creation of RSA module signing key if it's not an RSA key |
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On Wed, Apr 21, 2021 at 03:43:18PM -0400, Stefan Berger wrote: > Address a kbuild issue where a developer created an ECDSA key for signing > kernel modules and then builds an older version of the kernel, when bi- > secting the kernel for example, that does not support ECDSA keys. > > Trigger the creation of an RSA module signing key if it is not an RSA key. > > Fixes: cfc411e7fff3 ("Move certificate handling to its own directory") > Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
> --- > certs/Makefile | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/certs/Makefile b/certs/Makefile > index e3185c57fbd8..f64bc89ccbf1 100644 > --- a/certs/Makefile > +++ b/certs/Makefile > @@ -59,6 +59,11 @@ silent_redirect_openssl = 2>/dev/null > # external private key, because 'make randconfig' might enable such a > # boolean option and we unfortunately can't make it depend on !RANDCONFIG. > ifeq ($(CONFIG_MODULE_SIG_KEY),"certs/signing_key.pem") > + > +X509TEXT=$(shell openssl x509 -in $(CONFIG_MODULE_SIG_KEY) -text) > + > +$(if $(findstring rsaEncryption,$(X509TEXT)),,$(shell rm -f $(CONFIG_MODULE_SIG_KEY))) > + > $(obj)/signing_key.pem: $(obj)/x509.genkey > @$(kecho) "###" > @$(kecho) "### Now generating an X.509 key pair to be used for signing modules." > -- > 2.29.2 > >
/Jarkko
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