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Miller" , Ben Boeckel , Randy Dunlap , Malte Gell , Varad Gautam , keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, "Lee, Chun-Yi" Subject: [PATCH v6,4/4] Documentation/admin-guide/module-signing.rst: add openssl command option example for CodeSign EKU Date: Thu, 29 Apr 2021 15:28:51 +0800 Message-Id: <20210429072851.24057-5-jlee@suse.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20210429072851.24057-1-jlee@suse.com> References: <20210429072851.24057-1-jlee@suse.com> Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org 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" --- 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. -- 2.16.4