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# OpenSSL root CA configuration file.
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# Copy to `/root/ca/openssl.cnf`.
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[ ca ]
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# `man ca`
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default_ca = CA_default
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[ CA_default ]
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# Directory and file locations.
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dir = /root/ca
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certs = $dir/certs
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crl_dir = $dir/crl
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new_certs_dir = $dir/newcerts
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database = $dir/index.txt
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serial = $dir/serial
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RANDFILE = $dir/private/.rand
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# The root key and root certificate.
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private_key = $dir/private/ca.key.pem
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certificate = $dir/certs/ca.cert.pem
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# For certificate revocation lists.
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crlnumber = $dir/crlnumber
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crl = $dir/crl/ca.crl.pem
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crl_extensions = crl_ext
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default_crl_days = 30
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# SHA-1 is deprecated, so use SHA-2 instead.
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default_md = sha256
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30
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name_opt = ca_default
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cert_opt = ca_default
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default_days = 375
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preserve = no
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policy = policy_strict
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[ policy_strict ]
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# The root CA should only sign intermediate certificates that match.
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# See the POLICY FORMAT section of `man ca`.
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countryName = match
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stateOrProvinceName = match
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organizationName = match
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organizationalUnitName = optional
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commonName = supplied
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emailAddress = optional
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[ policy_loose ]
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# Allow the intermediate CA to sign a more diverse range of certificates.
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# See the POLICY FORMAT section of the `ca` man page.
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countryName = optional
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stateOrProvinceName = optional
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localityName = optional
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organizationName = optional
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organizationalUnitName = optional
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commonName = supplied
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emailAddress = optional
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[ req ]
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# Options for the `req` tool (`man req`).
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default_bits = 2048
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distinguished_name = req_distinguished_name
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string_mask = utf8only
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# SHA-1 is deprecated, so use SHA-2 instead.
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default_md = sha256
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# Extension to add when the -x509 option is used.
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x509_extensions = v3_ca
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[ req_distinguished_name ]
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# See <https://en.wikipedia.org/wiki/Certificate_signing_request>.
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countryName = Country Name (2 letter code)
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stateOrProvinceName = State or Province Name
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localityName = Locality Name
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0.organizationName = Organization Name
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organizationalUnitName = Organizational Unit Name
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commonName = Common Name
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emailAddress = Email Address
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# Optionally, specify some defaults.
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countryName_default = GB
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stateOrProvinceName_default = England
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localityName_default =
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0.organizationName_default = Alice Ltd
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organizationalUnitName_default =
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emailAddress_default =
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[ v3_ca ]
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# Extensions for a typical CA (`man x509v3_config`).
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid:always,issuer
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basicConstraints = critical, CA:true
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keyUsage = critical, digitalSignature, cRLSign, keyCertSign
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[ v3_intermediate_ca ]
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# Extensions for a typical intermediate CA (`man x509v3_config`).
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid:always,issuer
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basicConstraints = critical, CA:true, pathlen:0
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keyUsage = critical, digitalSignature, cRLSign, keyCertSign
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[ usr_cert ]
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# Extensions for client certificates (`man x509v3_config`).
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basicConstraints = CA:FALSE
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nsCertType = client, email
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nsComment = "OpenSSL Generated Client Certificate"
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid,issuer
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keyUsage = critical, nonRepudiation, digitalSignature, keyEncipherment
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extendedKeyUsage = clientAuth, emailProtection
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[ server_cert ]
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# Extensions for server certificates (`man x509v3_config`).
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basicConstraints = CA:FALSE
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nsCertType = server
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nsComment = "OpenSSL Generated Server Certificate"
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid,issuer:always
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keyUsage = critical, digitalSignature, keyEncipherment
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extendedKeyUsage = serverAuth
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121
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[ crl_ext ]
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# Extension for CRLs (`man x509v3_config`).
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authorityKeyIdentifier=keyid:always
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[ ocsp ]
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# Extension for OCSP signing certificates (`man ocsp`).
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basicConstraints = CA:FALSE
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subjectKeyIdentifier = hash
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authorityKeyIdentifier = keyid,issuer
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keyUsage = critical, digitalSignature
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extendedKeyUsage = critical, OCSPSigning
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