[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
countryName = Country Name
countryName_default = FR
stateOrProvinceName = State or Province Name (full name)
localityName = Locality Name (eg, city)
organizationalUnitName = Organizational Unit Name (eg, section)
commonName = Common Name
commonName_default = www.example.com
commonName_max = 64
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names
[alt_names]
DNS.1 = www1.example.com
DNS.2 = www2.example.com
DNS.3 = www3.example.com
openssl req -config openssl.cfg -nodes -new -newkey rsa:4096 -out multi_new.csr -keyout multi_new.key