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Date: Thu, 25 Aug 2022 22:23:14 +0800 From: "Lee, Chun-Yi" <joeyli.kernel@...il.com> To: David Howells <dhowells@...hat.com> Cc: Herbert Xu <herbert@...dor.apana.org.au>, "David S . Miller" <davem@...emloft.net>, Ben Boeckel <me@...boeckel.net>, Randy Dunlap <rdunlap@...radead.org>, Malte Gell <malte.gell@....de>, Varad Gautam <varad.gautam@...e.com>, Jarkko Sakkinen <jarkko@...nel.org>, Mimi Zohar <zohar@...ux.ibm.com>, keyrings@...r.kernel.org, linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org, "Lee, Chun-Yi" <jlee@...e.com> Subject: [PATCH v9,4/4] Documentation/admin-guide/module-signing.rst: add openssl command option example for CodeSign EKU Add an openssl command option example for generating CodeSign extended key usage in X.509 when CONFIG_CHECK_CODESIGN_EKU is enabled. Signed-off-by: "Lee, Chun-Yi" <jlee@...e.com> --- Documentation/admin-guide/module-signing.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/admin-guide/module-signing.rst b/Documentation/admin-guide/module-signing.rst index 7d7c7c8a545c..ca3b8f19466c 100644 --- a/Documentation/admin-guide/module-signing.rst +++ b/Documentation/admin-guide/module-signing.rst @@ -170,6 +170,12 @@ generate the public/private key files:: -config x509.genkey -outform PEM -out kernel_key.pem \ -keyout kernel_key.pem +When ``CONFIG_CHECK_CODESIGN_EKU`` option is enabled, the following openssl +command option should be added where for generating CodeSign extended key usage +in X.509:: + + -addext "extendedKeyUsage=codeSigning" + The full pathname for the resulting kernel_key.pem file can then be specified in the ``CONFIG_MODULE_SIG_KEY`` option, and the certificate and key therein will be used instead of an autogenerated keypair. -- 2.26.2
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