DIR_CA="./"
cat <<EOF>$DIR_CA/openssl.conf
[ ca ]
# man ca
default_ca = CA_default
[ CA_default ]
# Directory and file locations.
dir = ${DIR_CA}
certs = ${DIR_CA}certs
crl_dir = ${DIR_CA}crl
new_certs_dir = ${DIR_CA}newcerts
database = ${DIR_CA}index.txt
serial = ${DIR_CA}serial
RANDFILE = ${DIR_CA}private/.rand
# The root key and root certificate.
private_key = ${DIR_CA}private/ca.key.pem
certificate = ${DIR_CA}certs/ca.cert.pem
# For certificate revocation lists.
crlnumber = ${DIR_CA}crlnumber
crl = ${DIR_CA}crl/ca.crl.pem
crl_extensions = crl_ext
default_crl_days = 30
# SHA-1 is deprecated, so use SHA-2 instead.
default_md = sha256
name_opt = ca_default
cert_opt = ca_default
default_days = 375
preserve = no
policy = policy_strict
[ policy_strict ]
# The root CA should only sign intermediate certificates that match.
# See the POLICY FORMAT section of man ca.
countryName = match
stateOrProvinceName = match
organizationName = match
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
[ policy_loose ]
# Allow the intermediate CA to sign a more diverse range of certificates.
# See the POLICY FORMAT section of the ca man page.
countryName = optional
stateOrProvinceName = optional
localityName = optional
organizationName = optional
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
[ req ]
# Options for the req tool (man req).
default_bits = 2048
distinguished_name = req_distinguished_name
string_mask = utf8only
# SHA-1 is deprecated, so use SHA-2 instead.
default_md = sha256
# Extension to add when the -x509 option is used.
x509_extensions = v3_ca
# Extension for SANs
req_extensions = v3_req
[ v3_req ]
# Extensions to add to a certificate request
# Before invoke openssl use: export SAN=DNS:value1,DNS:value2
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
xxxsubjectAltNamexxx =
[ req_distinguished_name ]
# See <https://en.wikipedia.org/wiki/Certificate_signing_request>.
countryName = Country Name (2 letter code)
stateOrProvinceName = State or Province Name
localityName = Locality Name
0.organizationName = Organization Name
organizationalUnitName = Organizational Unit Name
commonName = Common Name
emailAddress = Email Address
# Optionally, specify some defaults.
countryName_default = $countryName_default
stateOrProvinceName_default = $stateOrProvinceName_default
localityName_default = $localityName_default
0.organizationName_default = $organizationName_default
organizationalUnitName_default = $organizationalUnitName_default
emailAddress_default = $emailAddress_default
[ 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
[ usr_cert ]
# Extensions for client certificates (man x509v3_config).
basicConstraints = CA:FALSE
nsCertType = client, email
nsComment = "OpenSSL Generated Client Certificate"
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid,issuer
keyUsage = critical, nonRepudiation, digitalSignature, keyEncipherment
extendedKeyUsage = clientAuth, emailProtection
[ server_cert ]
# Extensions for server certificates (man x509v3_config).
basicConstraints = CA:FALSE
nsCertType = server
nsComment = "OpenSSL Generated Server Certificate"
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid,issuer:always
keyUsage = critical, digitalSignature, keyEncipherment
extendedKeyUsage = serverAuth
[ 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
EOF
sed -i 's|xxxsubjectAltNamexxx \=|subjectAltName = ${ENV::SAN}|g' openssl.conf
