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#!/bin/bash
# http://stackoverflow.com/questions/21297139/how-do-you-sign-certificate-signing-request-with-your-certification-authority
function create_ca() {
cat > openssl-ca.cnf <<EOF
HOME = .
RANDFILE = .rnd
####################################################################
[ ca ]
default_ca = CA_default # The default ca section
[ CA_default ]
default_days = 3650 # how long to certify for
default_crl_days = 30 # how long before next CRL
default_md = sha256 # use public key default MD
preserve = no # keep passed DN ordering
x509_extensions = ca_extensions # The extensions to add to the cert
email_in_dn = no # Don't concat the email in the DN
copy_extensions = copy # Required to copy SANs from CSR to cert
certificate = cacert.pem # The CA certifcate
private_key = cakey.pem # The CA private key
new_certs_dir = . # Location for new certs after signing
database = index.txt # Database index file
serial = serial.txt # The current serial number
unique_subject = no # Set to 'no' to allow creation of
# several certificates with same subject.
####################################################################
[ req ]
default_bits = 4096
default_keyfile = cakey.pem
distinguished_name = ca_distinguished_name
x509_extensions = ca_extensions
string_mask = utf8only
####################################################################
[ ca_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = FR
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = IDF
localityName = Locality Name (eg, city)
localityName_default = Paris
organizationName = Organization Name (eg, company)
organizationName_default = Fsociety
organizationalUnitName = Organizational Unit (eg, division)
organizationalUnitName_default = CA Research Department
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_default = Test CA
emailAddress = Email Address
emailAddress_default = ca@example.com
####################################################################
[ ca_extensions ]
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always, issuer
basicConstraints = critical, CA:true
keyUsage = keyCertSign, cRLSign
[ signing_policy ]
countryName = optional
stateOrProvinceName = optional
localityName = optional
organizationName = optional
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
####################################################################
[ signing_req ]
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid, issuer
basicConstraints = CA:FALSE
keyUsage = digitalSignature, keyEncipherment
EOF
openssl req -x509 -config openssl-ca.cnf -newkey rsa:4096 -sha256 -nodes -keyout cakey.pem -out cacert.pem -outform PEM
if [ -f cacert.pem ]; then
ln -s cacert.pem `openssl x509 -hash -noout -in cacert.pem`.0
#openssl x509 -purpose -in cacert.pem -inform PEM | less
touch index.txt
echo '01' > serial.txt
fi
}
function create_server() {
cat > openssl-server.cnf <<EOF
HOME = .
RANDFILE = .rnd
####################################################################
[ req ]
default_bits = 2048
default_keyfile = serverkey.pem
distinguished_name = server_distinguished_name
req_extensions = server_req_extensions
string_mask = utf8only
####################################################################
[ server_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = FR
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = IDF
localityName = Locality Name (eg, city)
localityName_default = Paris
organizationName = Organization Name (eg, company)
organizationName_default = Server Organization
organizationalUnitName = Organizational Unit (eg, division)
organizationalUnitName_default = Server Research Department
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_default = ServerSide Test
emailAddress = Email Address
emailAddress_default = server@example.com
####################################################################
[ server_req_extensions ]
subjectKeyIdentifier = hash
basicConstraints = CA:FALSE
keyUsage = digitalSignature, keyEncipherment
nsComment = "OpenSSL Generated Certificate"
EOF
openssl req -config openssl-server.cnf -newkey rsa:2048 -sha256 -nodes -out serverkey.pem -outform PEM
# openssl req -text -noout -verify -in serverkey.pem | less
openssl ca -config openssl-ca.cnf -policy signing_policy -extensions signing_req -out servercert.pem -infiles serverkey.pem
}
function create_client() {
cat > openssl-client.cnf <<EOF
HOME = .
RANDFILE = .rnd
####################################################################
[ req ]
default_bits = 2048
default_keyfile = clientkey.pem
distinguished_name = client_distinguished_name
req_extensions = client_req_extensions
string_mask = utf8only
####################################################################
[ client_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = FR
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = IDF
localityName = Locality Name (eg, city)
localityName_default = Paris
organizationName = Organization Name (eg, company)
organizationName_default = Client Organization
organizationalUnitName = Organizational Unit (eg, division)
organizationalUnitName_default = Client Research Department
commonName = Common Name (e.g. client FQDN or YOUR name)
commonName_default = ClientSide Test
emailAddress = Email Address
emailAddress_default = client@example.com
####################################################################
[ client_req_extensions ]
subjectKeyIdentifier = hash
basicConstraints = CA:FALSE
keyUsage = digitalSignature, keyEncipherment
nsComment = "OpenSSL Generated Certificate"
EOF
openssl req -config openssl-client.cnf -newkey rsa:2048 -sha256 -nodes -out clientkey.pem -outform PEM
# openssl req -text -noout -verify -in clientkey.pem | less
openssl ca -config openssl-ca.cnf -policy signing_policy -extensions signing_req -out clientcert.pem -infiles clientkey.pem
}
function clean() {
rm -f .rnd
rm -f index.txt* serial.txt*
rm -f *.pem *.cnf *.0
}
case $1 in
ca)
create_ca
;;
server)
create_server
;;
client)
create_client
;;
clean)
clean
;;
*)
echo "Usage: $0 <ca|server|client|clean>"
exit 1
;;
esac
|
