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# OpenSSL root CA configuration file.
# Copy to `/root/ca/openssl.cnf`.
[ ca ]
# `man ca`
default_ca = CA_default
[ CA_default ]
# Directory and file locations.
dir = .
certs = $dir/certs
crl_dir = $dir/crl
new_certs_dir = $dir/newcerts
database = $dir/index.txt
serial = $dir/serial
RANDFILE = $dir/private/.rand
# The root key and root certificate.
private_key = $dir/private/root.key ### CHANGEME
certificate = $dir/certs/root.crt ### CHANGEME
# For certificate revocation lists.
crlnumber = $dir/crlnumber
crl = $dir/crl/root.crl ### CHANGEME
crl_extensions = crl_ext
default_crl_days = 30
# SHA-1 is deprecated, so use SHA-2 instead.
default_md = sha512
name_opt = ca_default
cert_opt = ca_default
default_days = 1825
preserve = no
policy = policy_strict
copy_extensions = copy
[ policy_strict ]
# The root CA should only sign intermediate certificates that match.
# See the POLICY FORMAT section of `man ca`.
countryName = match
stateOrProvinceName = optional
localityName = match
organizationName = match
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
[ req ]
# Options for the `req` tool (`man req`).
default_bits = 4096
distinguished_name = req_distinguished_name
string_mask = utf8only
prompt = no
# SHA-1 is deprecated, so use SHA-2 instead.
default_md = sha512
# Extension to add when the -x509 option is used.
x509_extensions = v3_ca
[ req_distinguished_name ]
countryName = GB ### CHANGEME
localityName = London ### CHANGEME
0.organizationName = MyCompany ### CHANGEME
commonName = MyCompany CA ### CHANGEME
emailAddress = admin@mycompany.com ### CHANGEME
[ v3_ca ]
# Extensions for a typical CA (`man x509v3_config`).
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical, CA:true
keyUsage = critical, digitalSignature, cRLSign, keyCertSign
[ v3_intermediate_ca ]
# Extensions for a typical intermediate CA (`man x509v3_config`).
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical, CA:true, pathlen:0
keyUsage = critical, digitalSignature, cRLSign, keyCertSign
[ crl_ext ]
# Extension for CRLs (`man x509v3_config`).
authorityKeyIdentifier=keyid:always
[ ocsp ]
# Extension for OCSP signing certificates (`man ocsp`).
basicConstraints = CA:FALSE
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid,issuer
keyUsage = critical, digitalSignature
extendedKeyUsage = critical, OCSPSigning
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