Messages in this thread Patch in this message | | | From | Stefan Berger <> | Subject | [PATCH v2 1/2] certs: Trigger creation of RSA module signing key if it's not an RSA key | Date | Thu, 8 Apr 2021 11:24:02 -0400 |
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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> --- 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
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