On Thu, Feb 11, 2021 at 02:54:32PM -0500, Nayna Jain wrote: > Loading a key on the IMA trusted keyring requires the key be signed > by an existing key on the builtin or secondary trusted keyring. > Creating a Certificate Signing Request (CSR) allows the certificate > to be self-signed or signed by a CA. > > This patch generates a self-signed module signing key using CSR. "Generate ..." /Jarkko > > Signed-off-by: Nayna Jain <nayna@xxxxxxxxxxxxx> > --- > Makefile | 3 ++- > certs/Makefile | 15 +++++++++++---- > 2 files changed, 13 insertions(+), 5 deletions(-) > > diff --git a/Makefile b/Makefile > index af18aab6bbee..9c87fdd600d8 100644 > --- a/Makefile > +++ b/Makefile > @@ -1473,7 +1473,8 @@ MRPROPER_FILES += include/config include/generated \ > .config .config.old .version \ > Module.symvers \ > certs/signing_key.pem certs/signing_key.x509 \ > - certs/x509.genkey \ > + certs/x509.genkey certs/signing_key.key \ > + certs/signing_key.crt certs/signing_key.csr \ > vmlinux-gdb.py \ > *.spec > > diff --git a/certs/Makefile b/certs/Makefile > index f4c25b67aad9..b2be7eb413d3 100644 > --- a/certs/Makefile > +++ b/certs/Makefile > @@ -60,11 +60,18 @@ $(obj)/signing_key.pem: $(obj)/x509.genkey > @$(kecho) "### needs to be run as root, and uses a hardware random" > @$(kecho) "### number generator if one is available." > @$(kecho) "###" > - $(Q)openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ > - -batch -x509 -config $(obj)/x509.genkey \ > - -outform PEM -out $(obj)/signing_key.pem \ > - -keyout $(obj)/signing_key.pem \ > + $(Q)openssl req -new -nodes -utf8 \ > + -batch -config $(obj)/x509.genkey \ > + -outform PEM -out $(obj)/signing_key.csr \ > + -keyout $(obj)/signing_key.key -extensions myexts \ > $($(quiet)redirect_openssl) > + $(Q)openssl x509 -req -days 36500 -in $(obj)/signing_key.csr \ > + -outform PEM -out $(obj)/signing_key.crt \ > + -signkey $(obj)/signing_key.key \ > + -$(CONFIG_MODULE_SIG_HASH) -extensions myexts \ > + -extfile $(obj)/x509.genkey \ > + $($(quiet)redirect_openssl) > + @cat $(obj)/signing_key.key $(obj)/signing_key.crt >> $(obj)/signing_key.pem > @$(kecho) "###" > @$(kecho) "### Key pair generated." > @$(kecho) "###" > -- > 2.18.1 > >
