39 lines
2.3 KiB
Plaintext
39 lines
2.3 KiB
Plaintext
make-ca is a utility to deliver and manage a complete PKI configuration for
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workstaitons and servers using only standard Unix utilities and OpenSSL. It
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will optionally generate keystores for OpenJDK and NSS if already installed,
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using a Mozilla cacerts.txt or like formatted file. It was originally developed
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for use with Linux From Scratch to minimize dependencies for early system
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build, but has been written to be generic enough for any Linux distribution.
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The make-ca script will process the certificates included in the certdata.txt
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file for use in multiple certificate stores (if the associated applications are
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present on the system). Additionally, any local certificates stored in
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/etc/ssl/local will be imported to the certificate stores. Certificates in this
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directory should be stored as PEM encoded OpenSSL trusted certificates.
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To create an OpenSSL trusted certificate from a regular PEM encoded file,
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provided by a CA not included in Mozilla's certificate distribution, you need
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to add trust arguments to the openssl command, and create a new certificate.
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There are three trust types that are recognized by the make-ca.sh script,
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SSL/TLS, S/Mime, and code signing. For example, using the CAcert root, if you
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want it to be trusted for all three roles, the following commands will create
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an appropriate OpenSSL trusted certificate:
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# install -vdm755 /etc/ssl/local &&
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# wget http://www.cacert.org/certs/root.crt &&
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# openssl x509 -in root.crt -text -fingerprint -setalias "CAcert Class 1 root" \
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-addtrust serverAuth -addtrust emailProtection -addtrust codeSigning \
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> /etc/ssl/local/CAcert_Class_1_root.pem
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If one of the three trust arguments is omitted, the certificate is neither
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trusted, nor rejected for that role. Clients that use OpenSSL or NSS
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encountering this certificate will present a warning to the user. Clients using
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GnuTLS without p11-kit support are not aware of trusted certificates. To
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include this CA into the ca-bundle.crt (used for GnuTLS), it must have
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serverAuth trust. Additionally, to explicitly disallow a certificate for a
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particular use, replace the -addtrust flag with the -addreject flag.
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Local trust overrides are handled entirely using the /etc/ssl/local directory.
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To override Mozilla's trust values, simply make a copy of the certificate in
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the local directory with alternate trust values.
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